Commit Graph

1266966 Commits

Author SHA1 Message Date
Christian Brauner
9d9539db86 pidfs: remove config option
As Linus suggested this enables pidfs unconditionally. A key property to
retain is the ability to compare pidfds by inode number (cf. [1]).
That's extremely helpful just as comparing namespace file descriptors by
inode number is. They are used in a variety of scenarios where they need
to be compared, e.g., when receiving a pidfd via SO_PEERPIDFD from a
socket to trivially authenticate a the sender and various other
use-cases.

For 64bit systems this is pretty trivial to do. For 32bit it's slightly
more annoying as we discussed but we simply add a dumb ida based
allocator that gets used on 32bit. This gives the same guarantees about
inode numbers on 64bit without any overflow risk. Practically, we'll
never run into overflow issues because we're constrained by the number
of processes that can exist on 32bit and by the number of open files
that can exist on a 32bit system. On 64bit none of this matters and
things are very simple.

If 32bit also needs the uniqueness guarantee they can simply parse the
contents of /proc/<pid>/fd/<nr>. The uniqueness guarantees have a
variety of use-cases. One of the most obvious ones is that they will
make pidfiles (or "pidfdfiles", I guess) reliable as the unique
identifier can be placed into there that won't be reycled. Also a
frequent request.

Note, I took the chance and simplified path_from_stashed() even further.
Instead of passing the inode number explicitly to path_from_stashed() we
let the filesystem handle that internally. So path_from_stashed() ends
up even simpler than it is now. This is also a good solution allowing
the cleanup code to be clean and consistent between 32bit and 64bit. The
cleanup path in prepare_anon_dentry() is also switched around so we put
the inode before the dentry allocation. This means we only have to call
the cleanup handler for the filesystem's inode data once and can rely
->evict_inode() otherwise.

Aside from having to have a bit of extra code for 32bit it actually ends
up a nice cleanup for path_from_stashed() imho.

Tested on both 32 and 64bit including error injection.

Link: https://github.com/systemd/systemd/pull/31713 [1]
Link: https://lore.kernel.org/r/20240312-dingo-sehnlich-b3ecc35c6de7@brauner
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-03-13 12:53:53 -07:00
Saravana Kannan
d61120b462 Documentation: power: Fix typo in suspend and interrupts doc
Typos are bad. Fix them.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-03-13 20:51:11 +01:00
Lukasz Luba
3acec69a94 PM: EM: Force device drivers to provide power in uW
The EM only supports power in uW. Make sure that it is not possible to
register some downstream driver which doesn't provide power in uW.
The only exception is artificial EM, but that EM is ignored by the rest of
kernel frameworks (thermal, powercap, etc).

Reported-by: PoShao Chen <poshao.chen@mediatek.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-03-13 20:48:38 +01:00
Uwe Kleine-König
52b43bbdb6 powercap: intel_rapl: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-03-13 20:45:54 +01:00
Linus Torvalds
ce0c1c9265 Modules changes for v6.9-rc1
Christophe Leroy did most of the work on this release, first with a few
 cleanups on CONFIG_STRICT_KERNEL_RWX and ending with error handling for
 when set_memory_XX() can fail. This is part of a larger effort to clean
 up all these callers which can fail, modules is just part of it.
 
 This has been sitting on linux-next for about a month without issues.
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Merge tag 'modules-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull modules updates from Luis Chamberlain:
 "Christophe Leroy did most of the work on this release, first with a
  few cleanups on CONFIG_STRICT_KERNEL_RWX and ending with error
  handling for when set_memory_XX() can fail.

  This is part of a larger effort to clean up all these callers which
  can fail, modules is just part of it"

* tag 'modules-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  module: Don't ignore errors from set_memory_XX()
  lib/test_kmod: fix kernel-doc warnings
  powerpc: Simplify strict_kernel_rwx_enabled()
  modules: Remove #ifdef CONFIG_STRICT_MODULE_RWX around rodata_enabled
  init: Declare rodata_enabled and mark_rodata_ro() at all time
  module: Change module_enable_{nx/x/ro}() to more explicit names
  module: Use set_memory_rox()
2024-03-13 12:40:58 -07:00
Linus Torvalds
70ef654469 EFI updates for v6.9:
- Measure initrd and command line using the CC protocol if the ordinary
   TCG2 protocol is not implemented, typically on TDX confidential VMs
 
 - Avoid creating mappings that are both writable and executable while
   running in the EFI boot services. This is a prerequisite for getting
   the x86 shim loader signed by MicroSoft again, which allows the
   distros to install on x86 PCs that ship with EFI secure boot enabled.
 
 - API update for struct platform_driver::remove()
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Merge tag 'efi-next-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI updates from Ard Biesheuvel:

 - Measure initrd and command line using the CC protocol if the ordinary
   TCG2 protocol is not implemented, typically on TDX confidential VMs

 - Avoid creating mappings that are both writable and executable while
   running in the EFI boot services. This is a prerequisite for getting
   the x86 shim loader signed by MicroSoft again, which allows the
   distros to install on x86 PCs that ship with EFI secure boot enabled.

 - API update for struct platform_driver::remove()

* tag 'efi-next-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  virt: efi_secret: Convert to platform remove callback returning void
  x86/efistub: Remap kernel text read-only before dropping NX attribute
  efi/libstub: Add get_event_log() support for CC platforms
  efi/libstub: Measure into CC protocol if TCG2 protocol is absent
  efi/libstub: Add Confidential Computing (CC) measurement typedefs
  efi/tpm: Use symbolic GUID name from spec for final events table
  efi/libstub: Use TPM event typedefs from the TCG PC Client spec
2024-03-13 12:37:41 -07:00
Stephen Boyd
3066c521be Merge branches 'clk-samsung', 'clk-imx', 'clk-rockchip', 'clk-clkdev' and 'clk-rate-exclusive' into clk-next
- Increase dev_id len for clkdev lookups

* clk-samsung: (25 commits)
  clk: samsung: Add CPU clock support for Exynos850
  clk: samsung: Pass mask to wait_until_mux_stable()
  clk: samsung: Keep register offsets in chip specific structure
  clk: samsung: Keep CPU clock chip specific data in a dedicated struct
  clk: samsung: Pass register layout type explicitly to CLK_CPU()
  clk: samsung: Pass actual CPU clock registers base to CPU_CLK()
  clk: samsung: Group CPU clock functions by chip
  clk: samsung: Use single CPU clock notifier callback for all chips
  clk: samsung: Reduce params count in exynos_register_cpu_clock()
  clk: samsung: Pull struct exynos_cpuclk into clk-cpu.c
  clk: samsung: Improve clk-cpu.c style
  dt-bindings: clock: exynos850: Add CMU_CPUCLK0 and CMU_CPUCL1
  clk: samsung: gs101: add support for cmu_peric1
  clk: samsung: gs101: drop extra empty line
  dt-bindings: clock: google,gs101-clock: add PERIC1 clock management unit
  clk: samsung: exynos850: Propagate SPI IPCLK rate change
  clk: samsung: gs101: gpio_peric0_pclk needs to be kept on
  clk: samsung: exynos850: Add PDMA clocks
  dt-bindings: clock: tesla,fsd: Fix spelling mistake
  clk: samsung: gs101: add support for cmu_peric0
  ...

* clk-imx:
  clk: imx: imx8mp: Fix SAI_MCLK_SEL definition
  clk: imx: scu: Use common error handling code in imx_clk_scu_alloc_dev()
  clk: imx: composite-8m: Delete two unnecessary initialisations in __imx8m_clk_hw_composite()
  clk: imx: composite-8m: Less function calls in __imx8m_clk_hw_composite() after error detection

* clk-rockchip:
  clk: rockchip: rk3399: Allow to set rate of clk_i2s0_frac's parent
  clk: rockchip: rk3588: use linked clock ID for GATE_LINK
  clk: rockchip: rk3588: fix indent
  clk: rockchip: rk3588: fix pclk_vo0grf and pclk_vo1grf
  dt-bindings: clock: rk3588: add missing PCLK_VO1GRF
  dt-bindings: clock: rk3588: drop CLK_NR_CLKS
  clk: rockchip: rk3588: fix CLK_NR_CLKS usage
  clk: rockchip: rk3568: Add PLL rate for 128MHz

* clk-clkdev:
  clkdev: Update clkdev id usage to allow for longer names

* clk-rate-exclusive:
  clk: Add a devm variant of clk_rate_exclusive_get()
2024-03-13 12:36:21 -07:00
Rafael J. Wysocki
4e7193acde - Fix memory leak in the error path at probe time in the Mediatek LVTS
driver (Christophe Jaillet)
 
 - Fix control buffer enablement regression on Meditek MT7896 (Frank
   Wunderlich)
 
 - Drop spaces before TABs in different places: thermal-of, ST drivers
   and Makefile (Geert Uytterhoeven)
 
 - Adjust DT binding for NXP as fsl,tmu-range min/maxItems can vary
   among several SoC versions (Fabio Estevam)
 
 - Add support for H616 THS controller for the Sun8i platforms. Note
   that this change relies on another change in the SoC specific code
   which is included in this branch (Martin Botka)
 
 - Don't fail probe due to zone registration failure because there is
   no trip points defined in the DT (Mark Brown)
 
 - Support variable TMU array size for new platforms (Peng Fan)
 
 - Adjust the DT binding for thermal-of and make the polling time not
   required and assume it is zero when not found in the DT (Konrad
   Dybcio)
 
 - Add r8a779h0 support in both the DT and the driver (Geert Uytterhoeven)
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Merge tag 'thermal-v6.9-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Merge additional thermal control changes for 6.9-rc1 from Daniel Lezcano:

"- Fix memory leak in the error path at probe time in the Mediatek LVTS
   driver (Christophe Jaillet)

 - Fix control buffer enablement regression on Meditek MT7896 (Frank
   Wunderlich)

 - Drop spaces before TABs in different places: thermal-of, ST drivers
   and Makefile (Geert Uytterhoeven)

 - Adjust DT binding for NXP as fsl,tmu-range min/maxItems can vary
   among several SoC versions (Fabio Estevam)

 - Add support for H616 THS controller for the Sun8i platforms. Note
   that this change relies on another change in the SoC specific code
   which is included in this branch (Martin Botka)

 - Don't fail probe due to zone registration failure because there is
   no trip points defined in the DT (Mark Brown)

 - Support variable TMU array size for new platforms (Peng Fan)

 - Adjust the DT binding for thermal-of and make the polling time not
   required and assume it is zero when not found in the DT (Konrad
   Dybcio)

 - Add r8a779h0 support in both the DT and the driver (Geert Uytterhoeven)"

* tag 'thermal-v6.9-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal/drivers/rcar_gen3: Add support for R-Car V4M
  dt-bindings: thermal: rcar-gen3-thermal: Add r8a779h0 support
  thermal/of: Assume polling-delay(-passive) 0 when absent
  dt-bindings: thermal-zones: Don't require polling-delay(-passive)
  thermal/drivers/qoriq: Fix getting tmu range
  thermal/drivers/sun8i: Don't fail probe due to zone registration failure
  thermal/drivers/sun8i: Add support for H616 THS controller
  thermal/drivers/sun8i: Add SRAM register access code
  thermal/drivers/sun8i: Extend H6 calibration to support 4 sensors
  thermal/drivers/sun8i: Explain unknown H6 register value
  dt-bindings: thermal: sun8i: Add H616 THS controller
  soc: sunxi: sram: export register 0 for THS on H616
  dt-bindings: thermal: qoriq-thermal: Adjust fsl,tmu-range min/maxItems
  thermal: Drop spaces before TABs
  thermal/drivers/mediatek: Fix control buffer enablement on MT7896
  thermal/drivers/mediatek/lvts_thermal: Fix a memory leak in an error handling path
2024-03-13 20:35:48 +01:00
Stephen Boyd
68e4ebd542 Merge branches 'clk-remove', 'clk-amlogic', 'clk-qcom', 'clk-parent' and 'clk-microchip' into clk-next
* clk-remove:
  clk: starfive: jh7110-vout: Convert to platform remove callback returning void
  clk: starfive: jh7110-isp: Convert to platform remove callback returning void
  clk: imx: imx8-acm: Convert to platform remove callback returning void

* clk-amlogic:
  clk: meson: Add missing clocks to axg_clk_regmaps

* clk-qcom: (62 commits)
  clk: qcom: gcc-ipq5018: fix register offset for GCC_UBI0_AXI_ARES reset
  clk: qcom: gcc-ipq5018: fix 'halt_reg' offset of 'gcc_pcie1_pipe_clk'
  clk: qcom: gcc-ipq5018: fix 'enable_reg' offset of 'gcc_gmac0_sys_clk'
  clk: qcom: camcc-x1e80100: Fix missing DT_IFACE enum in x1e80100 camcc
  clk: qcom: mmcc-msm8974: fix terminating of frequency table arrays
  clk: qcom: mmcc-apq8084: fix terminating of frequency table arrays
  clk: qcom: camcc-sc8280xp: fix terminating of frequency table arrays
  clk: qcom: gcc-ipq9574: fix terminating of frequency table arrays
  clk: qcom: gcc-ipq8074: fix terminating of frequency table arrays
  clk: qcom: gcc-ipq6018: fix terminating of frequency table arrays
  clk: qcom: gcc-ipq5018: fix terminating of frequency table arrays
  clk: qcom: dispcc-sdm845: Adjust internal GDSC wait times
  dt-bindings: clk: qcom: drop the SC7180 Modem subsystem clock controller
  clk: qcom: drop the SC7180 Modem subsystem clock driver
  clk: qcom: Use qcom_branch_set_clk_en()
  clk: qcom: branch: Add a helper for setting the enable bit
  clk: qcom: dispcc-sm8250: Make clk_init_data and pll_vco const
  clk: qcom: gcc-sc8180x: Add missing UFS QREF clocks
  clk: qcom: gcc-msm8953: add more resets
  clk: qcom: videocc-*: switch to module_platform_driver
  ...

* clk-parent:
  clk: Fix clk_core_get NULL dereference

* clk-microchip:
  clk: microchip: mpfs: convert MSSPLL outputs to clk_divider
  clk: microchip: mpfs: add missing MSSPLL outputs
  clk: microchip: mpfs: setup for using other mss pll outputs
  clk: microchip: mpfs: split MSSPLL in two
  dt-bindings: can: mpfs: add missing required clock
  dt-bindings: clock: mpfs: add more MSSPLL output definitions
2024-03-13 12:34:10 -07:00
Stephen Boyd
ee2d2a4e9c Merge branches 'clk-aspeed', 'clk-keystone', 'clk-mobileye' and 'clk-allwinner' into clk-next
* clk-aspeed:
  clk: ast2600: Add FSI parent clock with correct rate
  dt-bindings: clock: ast2600: Add FSI clock

* clk-keystone:
  clk: keystone: sci-clk: Adding support for non contiguous clocks

* clk-mobileye:
  dt-bindings: reset: mobileye,eyeq5-reset: add bindings
  dt-bindings: clock: mobileye,eyeq5-clk: add bindings
  clk: fixed-factor: add fwname-based constructor functions
  clk: fixed-factor: add optional accuracy support

* clk-allwinner:
  clk: sunxi: usb: fix kernel-doc warnings
  clk: sunxi: sun9i-cpus: fix kernel-doc warnings
  clk: sunxi: a20-gmac: fix kernel-doc warnings
2024-03-13 12:34:04 -07:00
Stephen Boyd
cf5f06c8ee Merge branches 'clk-renesas', 'clk-cleanup', 'clk-hisilicon', 'clk-mediatek' and 'clk-bulk' into clk-next
- Add a devm_clk_bulk_get_all_enable() API to get and enable all clks
   for a device
 - Fix some static checker errors in the hisilicon clk driver

* clk-renesas: (25 commits)
  clk: renesas: r8a779h0: Add RPC-IF clock
  clk: renesas: r8a779h0: Add SYS-DMAC clocks
  clk: renesas: r8a779h0: Add SDHI clock
  clk: renesas: r8a779h0: Add EtherAVB clocks
  clk: renesas: r9a07g04[34]: Fix typo for sel_shdi variable
  clk: renesas: r9a07g04[34]: Use SEL_SDHI1_STS status configuration for SD1 mux
  clk: renesas: r8a779f0: Correct PFC/GPIO parent clock
  clk: renesas: r8a779g0: Correct PFC/GPIO parent clocks
  clk: renesas: r8a779h0: Add I2C clocks
  clk: renesas: r8a779h0: Add watchdog clock
  clk: renesas: r8a779h0: Add PFC/GPIO clocks
  clk: renesas: r8a779g0: Fix PCIe clock name
  clk: renesas: cpg-mssr: Add support for R-Car V4M
  clk: renesas: rcar-gen4: Add support for FRQCRC1
  clk: renesas: r9a07g043: Add clock and reset entries for CRU
  clk: renesas: r9a08g045: Add clock and reset support for watchdog
  dt-bindings: clock: Add R8A779H0 V4M CPG Core Clock Definitions
  dt-bindings: clock: renesas,cpg-mssr: Document R-Car V4M support
  dt-bindings: power: Add r8a779h0 SYSC power domain definitions
  dt-bindings: power: renesas,rcar-sysc: Document R-Car V4M support
  ...

* clk-cleanup:
  clk: zynq: Prevent null pointer dereference caused by kmalloc failure
  clk: fractional-divider: Use bit operations consistently
  clk: fractional-divider: Move mask calculations out of lock
  clk: ti: dpll3xxx: use correct function names in kernel-doc
  clk: clocking-wizard: Remove redundant initialization of pointer div_addr
  clk: keystone: sci-clk: match func name comment to actual
  clk: cdce925: Remove redundant assignment to variable 'rate'
  MAINTAINERS: drop Sekhar Nori

* clk-hisilicon:
  clk: hisilicon: Use devm_kcalloc() instead of devm_kzalloc()
  clk: hisilicon: hi3559a: Fix an erroneous devm_kfree()
  clk: hisilicon: hi3519: Release the correct number of gates in hi3519_clk_unregister()

* clk-mediatek:
  clk: mediatek: clk-mt8173-apmixedsys: Use common error handling code in clk_mt8173_apmixed_probe()
  clk: mediatek: add infracfg reset controller for mt7988
  dt-bindings: reset: mediatek: add MT7988 infracfg reset IDs
  dt-bindings: clock: mediatek: convert SSUSBSYS to the json-schema clock
  dt-bindings: clock: mediatek: convert PCIESYS to the json-schema clock
  dt-bindings: clock: mediatek: convert hifsys to the json-schema clock
  clk: mediatek: mt7981-topckgen: flag SGM_REG_SEL as critical
  clk: mediatek: mt8183: Correct parent of CLK_INFRA_SSPM_32K_SELF
  clk: mediatek: mt7622-apmixedsys: Fix an error handling path in clk_mt8135_apmixed_probe()
  clk: mediatek: mt8135: Fix an error handling path in clk_mt8135_apmixed_probe()

* clk-bulk:
  clk: Provide managed helper to get and enable bulk clocks
2024-03-13 12:33:44 -07:00
Linus Torvalds
27b984af7a Hi,
This is my pull request for Linux v6.9. Contains small scope bug fixes
 and device tree updates. No new features.
 
 BR, Jarkko
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Merge tag 'tpmdd-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:
 "Small bug fixes and device tree updates. No new features"

* tag 'tpmdd-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: tis_i2c: Add compatible string nuvoton,npct75x
  tpm_tis: Add compatible string atmel,at97sc3204
  tpm_tis_spi: Add compatible string atmel,attpm20p
  dt-bindings: tpm: Add compatible string atmel,attpm20p
  tpm,tpm_tis: Avoid warning splat at shutdown
  tpm/tpm_ftpm_tee: fix all kernel-doc warnings
2024-03-13 12:25:46 -07:00
Linus Torvalds
9687d4ac58 imx: add support for i.MX95 ELE/V2X MU
misc: I will be signing-off from my personal gmail id from now on.
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Merge tag 'mailbox-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox

Pull mailbox updates from Jassi Brar:

 - imx: add support for i.MX95 ELE/V2X MU

 - misc: I will be signing-off from my personal gmail id from now on

* tag 'mailbox-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox:
  mailbox: imx: support i.MX95 Generic/ELE/V2X MU
  mailbox: imx: populate sub-nodes
  mailbox: imx: get RR/TR registers num from Parameter register
  mailbox: imx: support return value of init
  dt-bindings: mailbox: fsl,mu: add i.MX95 Generic/ELE/V2X MU compatible
2024-03-13 12:23:36 -07:00
Barry Song
270700dd06 mm/zswap: remove the memcpy if acomp is not sleepable
Most compressors are actually CPU-based and won't sleep during compression
and decompression.  We should remove the redundant memcpy for them.

This patch checks if the algorithm is sleepable by testing the
CRYPTO_ALG_ASYNC algorithm flag.

Generally speaking, async and sleepable are semantically similar but not
equal.  But for compress drivers, they are basically equal at least due to
the below facts.

Firstly, scompress drivers - crypto/deflate.c, lz4.c, zstd.c, lzo.c etc
have no sleep.  Secondly, zRAM has been using these scompress drivers for
years in atomic contexts, and never worried those drivers going to sleep.

One exception is that an async driver can sometimes still return
synchronously per Herbert's clarification.  In this case, we are still
having a redundant memcpy.  But we can't know if one particular acomp
request will sleep or not unless crypto can expose more details for each
specific request from offload drivers.

Link: https://lkml.kernel.org/r/20240222081135.173040-3-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Tested-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Acked-by: Chris Li <chrisl@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-13 12:12:21 -07:00
Barry Song
6c303f1af3 crypto: introduce: acomp_is_async to expose if comp drivers might sleep
acomp's users might want to know if acomp is really async to optimize
themselves.  One typical user which can benefit from exposed async stat is
zswap.

In zswap, zsmalloc is the most commonly used allocator for (and perhaps
the only one).  For zsmalloc, we cannot sleep while we map the compressed
memory, so we copy it to a temporary buffer.  By knowing the alg won't
sleep can help zswap to avoid the need for a buffer.  This shows
noticeable improvement in load/store latency of zswap.

Link: https://lkml.kernel.org/r/20240222081135.173040-2-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Chris Li <chrisl@kernel.org>
Cc: Chengming Zhou <zhouchengming@bytedance.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-13 12:12:21 -07:00
Qiang Zhang
82634d7e24 memtest: use {READ,WRITE}_ONCE in memory scanning
memtest failed to find bad memory when compiled with clang.  So use
{WRITE,READ}_ONCE to access memory to avoid compiler over optimization.

Link: https://lkml.kernel.org/r/20240312080422.691222-1-qiang4.zhang@intel.com
Signed-off-by: Qiang Zhang <qiang4.zhang@intel.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-13 12:12:21 -07:00
Barry Song
cd197c3a20 mm: prohibit the last subpage from reusing the entire large folio
In a Copy-on-Write (CoW) scenario, the last subpage will reuse the entire
large folio, resulting in the waste of (nr_pages - 1) pages.  This wasted
memory remains allocated until it is either unmapped or memory reclamation
occurs.

The following small program can serve as evidence of this behavior

 main()
 {
 #define SIZE 1024 * 1024 * 1024UL
         void *p = malloc(SIZE);
         memset(p, 0x11, SIZE);
         if (fork() == 0)
                 _exit(0);
         memset(p, 0x12, SIZE);
         printf("done\n");
         while(1);
 }

For example, using a 1024KiB mTHP by:
 echo always > /sys/kernel/mm/transparent_hugepage/hugepages-1024kB/enabled

(1) w/o the patch, it takes 2GiB,

Before running the test program,
 / # free -m
                total        used        free      shared  buff/cache   available
 Mem:            5754          84        5692           0          17        5669
 Swap:              0           0           0

 / # /a.out &
 / # done

After running the test program,
 / # free -m
                 total        used        free      shared  buff/cache   available
 Mem:            5754        2149        3627           0          19        3605
 Swap:              0           0           0

(2) w/ the patch, it takes 1GiB only,

Before running the test program,
 / # free -m
                 total        used        free      shared  buff/cache   available
 Mem:            5754          89        5687           0          17        5664
 Swap:              0           0           0

 / # /a.out &
 / # done

After running the test program,
 / # free -m
                total        used        free      shared  buff/cache   available
 Mem:            5754        1122        4655           0          17        4632
 Swap:              0           0           0

This patch migrates the last subpage to a small folio and immediately
returns the large folio to the system. It benefits both memory availability
and anti-fragmentation.

Link: https://lkml.kernel.org/r/20240308092721.144735-1-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Lance Yang <ioworker0@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-13 12:12:21 -07:00
Peter Xu
c087a5c324 mm: recover pud_leaf() definitions in nopmd case
This reverts one change in commit 924bd6a8c9 ("mm/x86: drop two
unnecessary pud_leaf() definitions").

One issue with that is it broke nopmd builds for at least both arm64 and
riscv (CONFIG_PGTABLE_LEVELS=2).  The other issue is it was overlooked that
it's a common change rather than x86 specific (relevant to the commit
message of the commit).

Normally there's no need for empty definition of pXd_leaf() because of the
fallback functions, however this logic may not apply to pgtable-nopmd.h,
because that's a header that can even be used by arch *pgtable.h headers,
which can use the *_leaf() definitions _before_ the fallback functions are
defined.  Leave it there to pass PGTABLE_LEVELS=2 builds.

Link: https://lkml.kernel.org/r/Ze8vFNV9YSdgC2S7@x1n
Fixes: 924bd6a8c9 ("mm/x86: drop two unnecessary pud_leaf() definitions")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202403090900.OwPqmRuI-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202403101607.a42gaLOS-lkp@intel.com/
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-13 12:12:21 -07:00
Linus Torvalds
259f7d5e2b Thermal control updates for 6.9-rc1
- Store zone trips table and zone operations directly in struct
    thermal_zone_device (Rafael Wysocki).
 
  - Fix up flex array initialization during thermal zone device
    registration (Nathan Chancellor).
 
  - Rework writable trip points handling in the thermal core and
    several drivers (Rafael Wysocki).
 
  - Thermal core code cleanups (Dan Carpenter, Flavio Suligoi).
 
  - Use thermal zone accessor functions in the int340x Intel thermal
    driver (Rafael Wysocki).
 
  - Add Lunar Lake-M PCI ID to the int340x Intel thermal driver (Srinivas
    Pandruvada).
 
  - Minor fixes for thermal governors (Rafael Wysocki, Di Shen).
 
  - Trip point handling fixes for the iwlwifi wireless driver (Rafael
    Wysocki).
 
  - Code cleanups (Rafael J. Wysocki, AngeloGioacchino Del Regno).
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Merge tag 'thermal-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control updates from Rafael Wysocki:
 "These mostly change the thermal core in a few ways allowing thermal
  drivers to be simplified, in particular in their removal and failing
  probe handling parts that are notoriously prone to errors, and
  propagate the changes to several drivers.

  Apart from that, support for a new platform is added (Intel Lunar
  Lake-M), some bugs are fixed and some code is cleaned up, as usual.

  Specifics:

   - Store zone trips table and zone operations directly in struct
     thermal_zone_device (Rafael Wysocki)

   - Fix up flex array initialization during thermal zone device
     registration (Nathan Chancellor)

   - Rework writable trip points handling in the thermal core and
     several drivers (Rafael Wysocki)

   - Thermal core code cleanups (Dan Carpenter, Flavio Suligoi)

   - Use thermal zone accessor functions in the int340x Intel thermal
     driver (Rafael Wysocki)

   - Add Lunar Lake-M PCI ID to the int340x Intel thermal driver
     (Srinivas Pandruvada)

   - Minor fixes for thermal governors (Rafael Wysocki, Di Shen)

   - Trip point handling fixes for the iwlwifi wireless driver (Rafael
     Wysocki)

   - Code cleanups (Rafael J. Wysocki, AngeloGioacchino Del Regno)"

* tag 'thermal-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (29 commits)
  thermal: core: remove unnecessary check in trip_point_hyst_store()
  thermal: intel: int340x_thermal: Use thermal zone accessor functions
  thermal: core: Remove excess empty line from a comment
  thermal: int340x: processor_thermal: Add Lunar Lake-M PCI ID
  thermal: core: Eliminate writable trip points masks
  thermal: of: Set THERMAL_TRIP_FLAG_RW_TEMP directly
  thermal: imx: Set THERMAL_TRIP_FLAG_RW_TEMP directly
  wifi: iwlwifi: mvm: Set THERMAL_TRIP_FLAG_RW_TEMP directly
  mlxsw: core_thermal: Set THERMAL_TRIP_FLAG_RW_TEMP directly
  thermal: intel: Set THERMAL_TRIP_FLAG_RW_TEMP directly
  thermal: core: Drop the .set_trip_hyst() thermal zone operation
  thermal: core: Add flags to struct thermal_trip
  thermal: core: Move initial num_trips assignment before memcpy()
  thermal: Get rid of CONFIG_THERMAL_WRITABLE_TRIPS
  thermal: intel: Adjust ops handling during thermal zone registration
  thermal: ACPI: Constify acpi_thermal_zone_ops
  thermal: core: Store zone ops in struct thermal_zone_device
  thermal: intel: Discard trip tables after zone registration
  thermal: ACPI: Discard trips table after zone registration
  thermal: core: Store zone trips table in struct thermal_zone_device
  ...
2024-03-13 12:03:57 -07:00
Muhammad Usama Anjum
1d0e51b24c selftests/exec: recursion-depth: conform test to TAP format output
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
While at it, do minor cleanups like move the declarations of the variables
on top of the function.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240304155928.1818928-3-usama.anjum@collabora.com
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-03-13 11:54:19 -07:00
Muhammad Usama Anjum
c409506773 selftests/exec: load_address: conform test to TAP format output
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240304155928.1818928-2-usama.anjum@collabora.com
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-03-13 11:54:19 -07:00
Linus Torvalds
9434467959 ACPI updates for 6.9-rc1
- Rearrange Device Check and Bus Check notification handling in the
    ACPI device hotplug code to make it get the "enabled" _STA bit into
    account (Rafael Wysocki).
 
  - Modify acpi_processor_add() to skip processors with the "enabled"
    _STA bit clear, as per the specification (Rafael Wysocki).
 
  - Stop failing Device Check notification handling without a valid
    reason (Rafael Wysocki).
 
  - Defer enumeration of devices that depend on a device with an ACPI
    device ID equalt to INTC10CF to address probe ordering issues on
    some platforms (Wentong Wu).
 
  - Constify acpi_bus_type (Ricardo Marliere).
 
  - Make the ACPI-specific suspend-to-idle code take the Low-Power S0
    Idle MSFT UUID into account on non-AMD systems (Rafael Wysocki).
 
  - Add ACPI IRQ override quirks for some new platforms (Sergey
    Kalinichev, Maxim Kudinov, Alexey Froloff, Sviatoslav Harasymchuk,
    Nicolas Haye).
 
  - Make the NFIT parsing code use acpi_evaluate_dsm_typed() (Andy
    Shevchenko).
 
  - Fix a memory leak in acpi_processor_power_exit() (Armin Wolf).
 
  - Make it possible to quirk the CSI-2 and MIPI DisCo for Imaging
    properties parsing and add a quirk for Dell XPS 9315 (Sakari Ailus).
 
  - Prevent false-positive static checker warnings from triggering by
    intializing some variables in the ACPI thermal code to zero (Colin
    Ian King).
 
  - Add DELL0501 handling to acpi_quirk_skip_serdev_enumeration() and
    make that function generic (Hans de Goede).
 
  - Make the ACPI backlight code handle fetching EDID that is longer than
    256 bytes (Mario Limonciello).
 
  - Skip initialization of GHES_ASSIST structures for Machine Check
    Architecture in APEI (Avadhut Naik).
 
  - Convert several plaform drivers in the ACPI subsystem to using a
    remove callback that returns void (Uwe Kleine-König).
 
  - Drop the long-deprecated custom_method debugfs interface that is
    problematic from the security standpoint (Rafael Wysocki).
 
  - Use %pe in a couple of places in the ACPI code for easier error
    decoding (Onkarnath).
 
  - Fix register width information handling during system memory
    accesses in the ACPI CPPC library (Jarred White).
 
  - Add AMD CPPC V2 support for family 17h processors to the ACPI CPPC
    library (Perry Yuan).
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Merge tag 'acpi-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These modify the ACPI device events and processor enumeration code to
  take the 'enabled' _STA bit into account as mandated by the ACPI
  specification, convert several platform drivers to using a remove
  callback that returns void, add some new quirks for ACPI IRQ override
  and other things, address assorted issues and clean up code.

  Specifics:

   - Rearrange Device Check and Bus Check notification handling in the
     ACPI device hotplug code to make it get the "enabled" _STA bit into
     account (Rafael Wysocki)

   - Modify acpi_processor_add() to skip processors with the "enabled"
     _STA bit clear, as per the specification (Rafael Wysocki)

   - Stop failing Device Check notification handling without a valid
     reason (Rafael Wysocki)

   - Defer enumeration of devices that depend on a device with an ACPI
     device ID equalt to INTC10CF to address probe ordering issues on
     some platforms (Wentong Wu)

   - Constify acpi_bus_type (Ricardo Marliere)

   - Make the ACPI-specific suspend-to-idle code take the Low-Power S0
     Idle MSFT UUID into account on non-AMD systems (Rafael Wysocki)

   - Add ACPI IRQ override quirks for some new platforms (Sergey
     Kalinichev, Maxim Kudinov, Alexey Froloff, Sviatoslav Harasymchuk,
     Nicolas Haye)

   - Make the NFIT parsing code use acpi_evaluate_dsm_typed() (Andy
     Shevchenko)

   - Fix a memory leak in acpi_processor_power_exit() (Armin Wolf)

   - Make it possible to quirk the CSI-2 and MIPI DisCo for Imaging
     properties parsing and add a quirk for Dell XPS 9315 (Sakari Ailus)

   - Prevent false-positive static checker warnings from triggering by
     intializing some variables in the ACPI thermal code to zero (Colin
     Ian King)

   - Add DELL0501 handling to acpi_quirk_skip_serdev_enumeration() and
     make that function generic (Hans de Goede)

   - Make the ACPI backlight code handle fetching EDID that is longer
     than 256 bytes (Mario Limonciello)

   - Skip initialization of GHES_ASSIST structures for Machine Check
     Architecture in APEI (Avadhut Naik)

   - Convert several plaform drivers in the ACPI subsystem to using a
     remove callback that returns void (Uwe Kleine-König)

   - Drop the long-deprecated custom_method debugfs interface that is
     problematic from the security standpoint (Rafael Wysocki)

   - Use %pe in a couple of places in the ACPI code for easier error
     decoding (Onkarnath)

   - Fix register width information handling during system memory
     accesses in the ACPI CPPC library (Jarred White)

   - Add AMD CPPC V2 support for family 17h processors to the ACPI CPPC
     library (Perry Yuan)"

* tag 'acpi-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (35 commits)
  ACPI: resource: Use IRQ override on Maibenben X565
  ACPI: CPPC: Use access_width over bit_width for system memory accesses
  ACPI: CPPC: enable AMD CPPC V2 support for family 17h processors
  ACPI: APEI: Skip initialization of GHES_ASSIST structures for Machine Check Architecture
  ACPI: scan: Consolidate Device Check and Bus Check notification handling
  ACPI: scan: Rework Device Check and Bus Check notification handling
  ACPI: scan: Make acpi_processor_add() check the device enabled bit
  ACPI: scan: Relocate acpi_bus_trim_one()
  ACPI: scan: Fix device check notification handling
  ACPI: resource: Add MAIBENBEN X577 to irq1_edge_low_force_override
  ACPI: pfr_update: Convert to platform remove callback returning void
  ACPI: pfr_telemetry: Convert to platform remove callback returning void
  ACPI: fan: Convert to platform remove callback returning void
  ACPI: GED: Convert to platform remove callback returning void
  ACPI: DPTF: Convert to platform remove callback returning void
  ACPI: AGDI: Convert to platform remove callback returning void
  ACPI: TAD: Convert to platform remove callback returning void
  ACPI: APEI: GHES: Convert to platform remove callback returning void
  ACPI: property: Polish ignoring bad data nodes
  ACPI: thermal_lib: Initialize temp_decik to zero
  ...
2024-03-13 11:54:05 -07:00
Muhammad Usama Anjum
99f5819bee selftests/exec: binfmt_script: Add the overall result line according to TAP
The following line is missing from the test's execution. Add it to make
it fully TAP conformant:
  # Totals: pass:27 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20240304155928.1818928-1-usama.anjum@collabora.com
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-03-13 11:53:45 -07:00
Mark Brown
c7c12024eb
Add support for the internal RK3308 audio codec
Merge series from Luca Ceresoli <luca.ceresoli@bootlin.com>:

This series adds a driver for the internal audio codec of the Rockchip
RK3308 SoC, along with some related patches. This codec is internally
connected to the I2S peripherals on the same chip, and it has some
peculiarities arising from that interconnection.

For proper bidirectional operation with the internal codec at any possible
combination of sampling rates, the I2S peripheral needs two clock sources
(tx and rx), while connection with an external codec commonly needs only
one.

Since v5.16 there is a driver for the I2S in
sound/soc/rockchip/rockchip_i2s_tdm.c, but in some cases it does not
configure correctly the clocks, resulting in an unnecessarily inaccurate
rate. Patch 1 fixes this.

Patches 2-4 add the codec driver along with the bindings and a new helper
macro.

Patches 5-7 add to the SoC DT file two I2S controllers (those which are
internally connected to the internal codec) and the codec itself and enable
the driver in the ARM64 defconfig.

Luca

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
Changes in v4:
- several cleanups in the codec probe function
- Link to v3: https://lore.kernel.org/r/20240221-rk3308-audio-codec-v3-0-dfa34abfcef6@bootlin.com

Changes in v3:
- Add the I2S clock fix patch and remove a previous fix which is now superseded
- Codec driver: fix silent playback until a given amplitude of sigital
  value, seen at >= 96 kHz rate
- various other changes, listed per-patch
- Link to v2: https://lore.kernel.org/r/20231219-rk3308-audio-codec-v2-0-c70d06021946@bootlin.com

Changes in v2:
- largely rewrote the codec driver to use DAPM and lots of improvements
  and cleanups
- removed the RK3308 audio card and related patches
- various other changes, listed per-patch
- Link to v1: https://lore.kernel.org/all/20220907142124.2532620-1-luca.ceresoli@bootlin.com/

---
Luca Ceresoli (7):
      ASoC: rockchip: i2s-tdm: Fix inaccurate sampling rates
      ASoC: dt-bindings: Add Rockchip RK3308 internal audio codec
      ASoC: core: add SOC_DOUBLE_RANGE_TLV() helper macro
      ASoC: codecs: Add RK3308 internal audio codec driver
      arm64: defconfig: enable Rockchip RK3308 internal audio codec driver
      arm64: dts: rockchip: add i2s_8ch_2 and i2s_8ch_3
      arm64: dts: rockchip: add the internal audio codec

 .../bindings/sound/rockchip,rk3308-codec.yaml      |  98 +++
 MAINTAINERS                                        |   7 +
 arch/arm64/boot/dts/rockchip/rk3308.dtsi           |  56 ++
 arch/arm64/configs/defconfig                       |   1 +
 include/sound/soc.h                                |  12 +
 sound/soc/codecs/Kconfig                           |  11 +
 sound/soc/codecs/Makefile                          |   2 +
 sound/soc/codecs/rk3308_codec.c                    | 974 +++++++++++++++++++++
 sound/soc/codecs/rk3308_codec.h                    | 579 ++++++++++++
 sound/soc/rockchip/rockchip_i2s_tdm.c              | 352 +-------
 10 files changed, 1746 insertions(+), 346 deletions(-)
---
base-commit: dfda120c512b3edca1436f770924e91b14f93a98
change-id: 20231219-rk3308-audio-codec-a5558ba8949d

Best regards,
--
Luca Ceresoli <luca.ceresoli@bootlin.com>
2024-03-13 18:43:22 +00:00
Linus Torvalds
07abb19a9b Power management updates for 6.9-rc1
- Allow the Energy Model to be updated dynamically (Lukasz Luba).
 
  - Add support for LZ4 compression algorithm to the hibernation image
    creation and loading code (Nikhil V).
 
  - Fix and clean up system suspend statistics collection (Rafael
    Wysocki).
 
  - Simplify device suspend and resume handling in the power management
    core code (Rafael Wysocki).
 
  - Fix PCI hibernation support description (Yiwei Lin).
 
  - Make hibernation take set_memory_ro() return values into account as
    appropriate (Christophe Leroy).
 
  - Set mem_sleep_current during kernel command line setup to avoid an
    ordering issue with handling it (Maulik Shah).
 
  - Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
    driver's system suspend callback (Qingliang Li).
 
  - Simplify pm_runtime_get_if_active() usage and add a replacement for
    pm_runtime_put_autosuspend() (Sakari Ailus).
 
  - Add a tracepoint for runtime_status changes tracking (Vilas Bhat).
 
  - Fix section title markdown in the runtime PM documentation (Yiwei
    Lin).
 
  - Enable preferred core support in the amd-pstate cpufreq driver (Meng
    Li).
 
  - Fix min_perf assignment in amd_pstate_adjust_perf() and make the
    min/max limit perf values in amd-pstate always stay within the
    (highest perf, lowest perf) range (Tor Vic, Meng Li).
 
  - Allow intel_pstate to assign model-specific values to strings used in
    the EPP sysfs interface and make it do so on Meteor Lake (Srinivas
    Pandruvada).
 
  - Drop long-unused cpudata::prev_cummulative_iowait from the
    intel_pstate cpufreq driver (Jiri Slaby).
 
  - Prevent scaling_cur_freq from exceeding scaling_max_freq when the
    latter is an inefficient frequency (Shivnandan Kumar).
 
  - Change default transition delay in cpufreq to 2ms (Qais Yousef).
 
  - Remove references to 10ms minimum sampling rate from comments in the
    cpufreq code (Pierre Gondois).
 
  - Honour transition_latency over transition_delay_us in cpufreq (Qais
    Yousef).
 
  - Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar).
 
  - General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
    Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
    Belova).
 
  - Update cpufreq-dt-platdev to block/approve devices (Richard Acayan).
 
  - Make the SCMI cpufreq driver get a transition delay value from
    firmware (Pierre Gondois).
 
  - Prevent the haltpoll cpuidle governor from shrinking guest
    poll_limit_ns below grow_start (Parshuram Sangle).
 
  - Avoid potential overflow in integer multiplication when computing
    cpuidle state parameters (C Cheng).
 
  - Adjust MWAIT hint target C-state computation in the ACPI cpuidle
    driver and in intel_idle to return a correct value for C0 (He
    Rongguang).
 
  - Address multiple issues in the TPMI RAPL driver and add support for
    new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui).
 
  - Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
    Lezcano).
 
  - Fix kernel-doc for dtpm_create_hierarchy() (Yang Li).
 
  - Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
    Norway Ananda).
 
  - Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil).
 
  - Fix a couple of warnings in the OPP core code related to W=1
    builds (Viresh Kumar).
 
  - Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
    Kumar).
 
  - Extend dev_pm_opp_data with turbo support (Sibi Sankar).
 
  - dt-bindings: drop maxItems from inner items (David Heidelberg).
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Merge tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "From the functional perspective, the most significant change here is
  the addition of support for Energy Models that can be updated
  dynamically at run time.

  There is also the addition of LZ4 compression support for hibernation,
  the new preferred core support in amd-pstate, new platforms support in
  the Intel RAPL driver, new model-specific EPP handling in intel_pstate
  and more.

  Apart from that, the cpufreq default transition delay is reduced from
  10 ms to 2 ms (along with some related adjustments), the system
  suspend statistics code undergoes a significant rework and there is a
  usual bunch of fixes and code cleanups all over.

  Specifics:

   - Allow the Energy Model to be updated dynamically (Lukasz Luba)

   - Add support for LZ4 compression algorithm to the hibernation image
     creation and loading code (Nikhil V)

   - Fix and clean up system suspend statistics collection (Rafael
     Wysocki)

   - Simplify device suspend and resume handling in the power management
     core code (Rafael Wysocki)

   - Fix PCI hibernation support description (Yiwei Lin)

   - Make hibernation take set_memory_ro() return values into account as
     appropriate (Christophe Leroy)

   - Set mem_sleep_current during kernel command line setup to avoid an
     ordering issue with handling it (Maulik Shah)

   - Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
     driver's system suspend callback (Qingliang Li)

   - Simplify pm_runtime_get_if_active() usage and add a replacement for
     pm_runtime_put_autosuspend() (Sakari Ailus)

   - Add a tracepoint for runtime_status changes tracking (Vilas Bhat)

   - Fix section title markdown in the runtime PM documentation (Yiwei
     Lin)

   - Enable preferred core support in the amd-pstate cpufreq driver
     (Meng Li)

   - Fix min_perf assignment in amd_pstate_adjust_perf() and make the
     min/max limit perf values in amd-pstate always stay within the
     (highest perf, lowest perf) range (Tor Vic, Meng Li)

   - Allow intel_pstate to assign model-specific values to strings used
     in the EPP sysfs interface and make it do so on Meteor Lake
     (Srinivas Pandruvada)

   - Drop long-unused cpudata::prev_cummulative_iowait from the
     intel_pstate cpufreq driver (Jiri Slaby)

   - Prevent scaling_cur_freq from exceeding scaling_max_freq when the
     latter is an inefficient frequency (Shivnandan Kumar)

   - Change default transition delay in cpufreq to 2ms (Qais Yousef)

   - Remove references to 10ms minimum sampling rate from comments in
     the cpufreq code (Pierre Gondois)

   - Honour transition_latency over transition_delay_us in cpufreq (Qais
     Yousef)

   - Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar)

   - General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
     Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
     Belova)

   - Update cpufreq-dt-platdev to block/approve devices (Richard Acayan)

   - Make the SCMI cpufreq driver get a transition delay value from
     firmware (Pierre Gondois)

   - Prevent the haltpoll cpuidle governor from shrinking guest
     poll_limit_ns below grow_start (Parshuram Sangle)

   - Avoid potential overflow in integer multiplication when computing
     cpuidle state parameters (C Cheng)

   - Adjust MWAIT hint target C-state computation in the ACPI cpuidle
     driver and in intel_idle to return a correct value for C0 (He
     Rongguang)

   - Address multiple issues in the TPMI RAPL driver and add support for
     new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui)

   - Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
     Lezcano)

   - Fix kernel-doc for dtpm_create_hierarchy() (Yang Li)

   - Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
     Norway Ananda)

   - Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil)

   - Fix a couple of warnings in the OPP core code related to W=1 builds
     (Viresh Kumar)

   - Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
     Kumar)

   - Extend dev_pm_opp_data with turbo support (Sibi Sankar)

   - dt-bindings: drop maxItems from inner items (David Heidelberg)"

* tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (95 commits)
  dt-bindings: opp: drop maxItems from inner items
  OPP: debugfs: Fix warning around icc_get_name()
  OPP: debugfs: Fix warning with W=1 builds
  cpufreq: Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h
  OPP: Extend dev_pm_opp_data with turbo support
  Fix cpupower-frequency-info.1 man page typo
  cpufreq: scmi: Set transition_delay_us
  firmware: arm_scmi: Populate fast channel rate_limit
  firmware: arm_scmi: Populate perf commands rate_limit
  cpuidle: ACPI/intel: fix MWAIT hint target C-state computation
  PM: sleep: wakeirq: fix wake irq warning in system suspend
  powercap: dtpm: Fix kernel-doc for dtpm_create_hierarchy() function
  cpufreq: Don't unregister cpufreq cooling on CPU hotplug
  PM: suspend: Set mem_sleep_current during kernel command line setup
  cpufreq: Honour transition_latency over transition_delay_us
  cpufreq: Limit resolving a frequency to policy min/max
  Documentation: PM: Fix runtime_pm.rst markdown syntax
  cpufreq: amd-pstate: adjust min/max limit perf
  cpufreq: Remove references to 10ms min sampling rate
  cpufreq: intel_pstate: Update default EPPs for Meteor Lake
  ...
2024-03-13 11:40:06 -07:00
Will Deacon
14cebf689a swiotlb: Reinstate page-alignment for mappings >= PAGE_SIZE
For swiotlb allocations >= PAGE_SIZE, the slab search historically
adjusted the stride to avoid checking unaligned slots. This had the
side-effect of aligning large mapping requests to PAGE_SIZE, but that
was broken by 0eee5ae102 ("swiotlb: fix slot alignment checks").

Since this alignment could be relied upon drivers, reinstate PAGE_SIZE
alignment for swiotlb mappings >= PAGE_SIZE.

Reported-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Petr Tesarik <petr.tesarik1@huawei-partners.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-03-13 11:39:34 -07:00
Nicolin Chen
afc5aa46ed iommu/dma: Force swiotlb_max_mapping_size on an untrusted device
The swiotlb does not support a mapping size > swiotlb_max_mapping_size().
On the other hand, with a 64KB PAGE_SIZE configuration, it's observed that
an NVME device can map a size between 300KB~512KB, which certainly failed
the swiotlb mappings, though the default pool of swiotlb has many slots:
    systemd[1]: Started Journal Service.
 => nvme 0000:00:01.0: swiotlb buffer is full (sz: 327680 bytes), total 32768 (slots), used 32 (slots)
    note: journal-offline[392] exited with irqs disabled
    note: journal-offline[392] exited with preempt_count 1

Call trace:
[    3.099918]  swiotlb_tbl_map_single+0x214/0x240
[    3.099921]  iommu_dma_map_page+0x218/0x328
[    3.099928]  dma_map_page_attrs+0x2e8/0x3a0
[    3.101985]  nvme_prep_rq.part.0+0x408/0x878 [nvme]
[    3.102308]  nvme_queue_rqs+0xc0/0x300 [nvme]
[    3.102313]  blk_mq_flush_plug_list.part.0+0x57c/0x600
[    3.102321]  blk_add_rq_to_plug+0x180/0x2a0
[    3.102323]  blk_mq_submit_bio+0x4c8/0x6b8
[    3.103463]  __submit_bio+0x44/0x220
[    3.103468]  submit_bio_noacct_nocheck+0x2b8/0x360
[    3.103470]  submit_bio_noacct+0x180/0x6c8
[    3.103471]  submit_bio+0x34/0x130
[    3.103473]  ext4_bio_write_folio+0x5a4/0x8c8
[    3.104766]  mpage_submit_folio+0xa0/0x100
[    3.104769]  mpage_map_and_submit_buffers+0x1a4/0x400
[    3.104771]  ext4_do_writepages+0x6a0/0xd78
[    3.105615]  ext4_writepages+0x80/0x118
[    3.105616]  do_writepages+0x90/0x1e8
[    3.105619]  filemap_fdatawrite_wbc+0x94/0xe0
[    3.105622]  __filemap_fdatawrite_range+0x68/0xb8
[    3.106656]  file_write_and_wait_range+0x84/0x120
[    3.106658]  ext4_sync_file+0x7c/0x4c0
[    3.106660]  vfs_fsync_range+0x3c/0xa8
[    3.106663]  do_fsync+0x44/0xc0

Since untrusted devices might go down the swiotlb pathway with dma-iommu,
these devices should not map a size larger than swiotlb_max_mapping_size.

To fix this bug, add iommu_dma_max_mapping_size() for untrusted devices to
take into account swiotlb_max_mapping_size() v.s. iova_rcache_range() from
the iommu_dma_opt_mapping_size().

Fixes: 82612d66d5 ("iommu: Allow the dma-iommu api to use bounce buffers")
Link: https://lore.kernel.org/r/ee51a3a5c32cf885b18f6416171802669f4a718a.1707851466.git.nicolinc@nvidia.com
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
[will: Drop redundant is_swiotlb_active(dev) check]
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-03-13 11:39:28 -07:00
Will Deacon
51b30ecb73 swiotlb: Fix alignment checks when both allocation and DMA masks are present
Nicolin reports that swiotlb buffer allocations fail for an NVME device
behind an IOMMU using 64KiB pages. This is because we end up with a
minimum allocation alignment of 64KiB (for the IOMMU to map the buffer
safely) but a minimum DMA alignment mask corresponding to a 4KiB NVME
page (i.e. preserving the 4KiB page offset from the original allocation).
If the original address is not 4KiB-aligned, the allocation will fail
because swiotlb_search_pool_area() erroneously compares these unmasked
bits with the 64KiB-aligned candidate allocation.

Tweak swiotlb_search_pool_area() so that the DMA alignment mask is
reduced based on the required alignment of the allocation.

Fixes: 82612d66d5 ("iommu: Allow the dma-iommu api to use bounce buffers")
Link: https://lore.kernel.org/r/cover.1707851466.git.nicolinc@nvidia.com
Reported-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-03-13 11:39:27 -07:00
Will Deacon
cbf53074a5 swiotlb: Honour dma_alloc_coherent() alignment in swiotlb_alloc()
core-api/dma-api-howto.rst states the following properties of
dma_alloc_coherent():

  | The CPU virtual address and the DMA address are both guaranteed to
  | be aligned to the smallest PAGE_SIZE order which is greater than or
  | equal to the requested size.

However, swiotlb_alloc() passes zero for the 'alloc_align_mask'
parameter of swiotlb_find_slots() and so this property is not upheld.
Instead, allocations larger than a page are aligned to PAGE_SIZE,

Calculate the mask corresponding to the page order suitable for holding
the allocation and pass that to swiotlb_find_slots().

Fixes: e81e99bacc ("swiotlb: Support aligned swiotlb buffers")
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Petr Tesarik <petr.tesarik1@huawei-partners.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-03-13 11:39:24 -07:00
Will Deacon
823353b7cf swiotlb: Enforce page alignment in swiotlb_alloc()
When allocating pages from a restricted DMA pool in swiotlb_alloc(),
the buffer address is blindly converted to a 'struct page *' that is
returned to the caller. In the unlikely event of an allocation bug,
page-unaligned addresses are not detected and slots can silently be
double-allocated.

Add a simple check of the buffer alignment in swiotlb_alloc() to make
debugging a little easier if something has gone wonky.

Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Petr Tesarik <petr.tesarik1@huawei-partners.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-03-13 11:39:22 -07:00
Will Deacon
04867a7a33 swiotlb: Fix double-allocation of slots due to broken alignment handling
Commit bbb73a103f ("swiotlb: fix a braino in the alignment check fix"),
which was a fix for commit 0eee5ae102 ("swiotlb: fix slot alignment
checks"), causes a functional regression with vsock in a virtual machine
using bouncing via a restricted DMA SWIOTLB pool.

When virtio allocates the virtqueues for the vsock device using
dma_alloc_coherent(), the SWIOTLB search can return page-unaligned
allocations if 'area->index' was left unaligned by a previous allocation
from the buffer:

 # Final address in brackets is the SWIOTLB address returned to the caller
 | virtio-pci 0000:00:07.0: orig_addr 0x0 alloc_size 0x2000, iotlb_align_mask 0x800 stride 0x2: got slot 1645-1649/7168 (0x98326800)
 | virtio-pci 0000:00:07.0: orig_addr 0x0 alloc_size 0x2000, iotlb_align_mask 0x800 stride 0x2: got slot 1649-1653/7168 (0x98328800)
 | virtio-pci 0000:00:07.0: orig_addr 0x0 alloc_size 0x2000, iotlb_align_mask 0x800 stride 0x2: got slot 1653-1657/7168 (0x9832a800)

This ends badly (typically buffer corruption and/or a hang) because
swiotlb_alloc() is expecting a page-aligned allocation and so blindly
returns a pointer to the 'struct page' corresponding to the allocation,
therefore double-allocating the first half (2KiB slot) of the 4KiB page.

Fix the problem by treating the allocation alignment separately to any
additional alignment requirements from the device, using the maximum
of the two as the stride to search the buffer slots and taking care
to ensure a minimum of page-alignment for buffers larger than a page.

This also resolves swiotlb allocation failures occuring due to the
inclusion of ~PAGE_MASK in 'iotlb_align_mask' for large allocations and
resulting in alignment requirements exceeding swiotlb_max_mapping_size().

Fixes: bbb73a103f ("swiotlb: fix a braino in the alignment check fix")
Fixes: 0eee5ae102 ("swiotlb: fix slot alignment checks")
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Petr Tesarik <petr.tesarik1@huawei-partners.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-03-13 11:39:17 -07:00
Linus Torvalds
a070a08d00 Core:
- Log a message when unused PM domains gets disabled
  - Scale down parent/child performance states in the reverse order
 
 Providers:
  - qcom: rpmpd: Add power domains support for MSM8974, MSM8974PRO, PMA8084
    and PM8841
  - renesas: rcar-gen4-sysc: Reduce atomic delays
  - renesas: rcar-sysc: Adjust the waiting time to cover the worst case
  - renesas: r8a779h0-sysc: Add support for the r8a779h0 PM domains
  - imx: imx8mp-blk-ctrl: Add the fdcc clock to the hdmimix domains
  - imx: imx8mp-blk-ctrl: Error out if domains are missing in DT
 
 Improve support for multiple PM domains:
  - Add two helper functions to attach/detach multiple PM domains
  - Convert a couple of drivers to use the new helper functions
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Merge tag 'pmdomain-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm

Pull pmdomain updates from Ulf Hansson:
 "Core:
   - Log a message when unused PM domains gets disabled
   - Scale down parent/child performance states in the reverse order

  Providers:
   - qcom: rpmpd: Add power domains support for MSM8974, MSM8974PRO,
     PMA8084 and PM8841
   - renesas: rcar-gen4-sysc: Reduce atomic delays
   - renesas: rcar-sysc: Adjust the waiting time to cover the worst case
   - renesas: r8a779h0-sysc: Add support for the r8a779h0 PM domains
   - imx: imx8mp-blk-ctrl: Add the fdcc clock to the hdmimix domains
   - imx: imx8mp-blk-ctrl: Error out if domains are missing in DT

  Improve support for multiple PM domains:
   - Add two helper functions to attach/detach multiple PM domains
   - Convert a couple of drivers to use the new helper functions"

* tag 'pmdomain-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (22 commits)
  pmdomain: renesas: rcar-gen4-sysc: Reduce atomic delays
  pmdomain: renesas: Adjust the waiting time to cover the worst case
  pmdomain: qcom: rpmpd: Add MSM8974PRO+PMA8084 power domains
  pmdomain: qcom: rpmpd: Add MSM8974+PM8841 power domains
  pmdomain: core: constify of_phandle_args in add device and subdomain
  pmdomain: core: constify of_phandle_args in xlate
  media: venus: Convert to dev_pm_domain_attach|detach_list() for vcodec
  remoteproc: qcom_q6v5_adsp: Convert to dev_pm_domain_attach|detach_list()
  remoteproc: imx_rproc: Convert to dev_pm_domain_attach|detach_list()
  remoteproc: imx_dsp_rproc: Convert to dev_pm_domain_attach|detach_list()
  PM: domains: Add helper functions to attach/detach multiple PM domains
  pmdomain: imx8mp-blk-ctrl: imx8mp_blk: Add fdcc clock to hdmimix domain
  pmdomain: mediatek: Use devm_platform_ioremap_resource() in init_scp()
  pmdomain: renesas: r8a779h0-sysc: Add r8a779h0 support
  pmdomain: imx8mp-blk-ctrl: Error out if domains are missing in DT
  pmdomain: ti: Add a null pointer check to the omap_prm_domain_init
  pmdomain: renesas: rcar-gen4-sysc: Remove unneeded includes
  pmdomain: core: Print a message when unused power domains are disabled
  pmdomain: qcom: rpmpd: Keep one RPM handle for all RPMPDs
  pmdomain: core: Scale down parent/child performance states in reverse order
  ...
2024-03-13 11:33:10 -07:00
Linus Torvalds
15223fdbdf hwmon updates for v6.9
* New drivers for
 
   - Amphenol ChipCap 2
 
   - ASPEED g6 PWM/Fan tach
 
   - Astera Labs PT5161L retimer
 
   - ASUS ROG RYUJIN II 360 AIO cooler
 
   - LTC4282
 
   - Microsoft Surface devices
 
   - MPS MPQ8785 Synchronous Step-Down Converter
 
   - NZXT Kraken X and Z series AIO CPU coolers
 
 * Additional chip support in existing drivers
 
   - Ayaneo Air Plus 7320u (oxp-sensors)
 
   - INA260 (ina2xx)
 
   - XPS 9315 (dell-smm)
 
   - MSI customer ID (nct6683)
 
 * Devicetree bindings updates
 
   - Common schema for hardware monitoring devices
 
   - Common schema for fans
 
   - Update chip descriptions to use common schema
 
   - Document regulator properties in several drivers
 
   - Explicit bindings for infineon buck converters
 
 * Other improvements
 
   - Replaced rbtree with maple tree register cache in several drivers
 
   - Added support for humidity min/max alarm and volatage fault attributes
     to hwmon core
 
   - Dropped non-functional I2C_CLASS_HWMON support for drivers w/o detect()
 
   - Dropped obsolete and redundant entried from MAINTAINERS
 
   - Cleaned up axi-fan-control and coretemp drivers
 
   - Minor fixes and improvements in several other drivers
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Merge tag 'hwmon-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New drivers:
   - Amphenol ChipCap 2
   - ASPEED g6 PWM/Fan tach
   - Astera Labs PT5161L retimer
   - ASUS ROG RYUJIN II 360 AIO cooler
   - LTC4282
   - Microsoft Surface devices
   - MPS MPQ8785 Synchronous Step-Down Converter
   - NZXT Kraken X and Z series AIO CPU coolers

  Additional chip support in existing drivers:
   - Ayaneo Air Plus 7320u (oxp-sensors)
   - INA260 (ina2xx)
   - XPS 9315 (dell-smm)
   - MSI customer ID (nct6683)

  Devicetree bindings updates:
   - Common schema for hardware monitoring devices
   - Common schema for fans
   - Update chip descriptions to use common schema
   - Document regulator properties in several drivers
   - Explicit bindings for infineon buck converters

  Other improvements:
   - Replaced rbtree with maple tree register cache in several drivers
   - Added support for humidity min/max alarm and volatage fault
     attributes to hwmon core
   - Dropped non-functional I2C_CLASS_HWMON support for drivers w/o
     detect()
   - Dropped obsolete and redundant entried from MAINTAINERS
   - Cleaned up axi-fan-control and coretemp drivers
   - Minor fixes and improvements in several other drivers"

* tag 'hwmon-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (70 commits)
  hwmon: (dell-smm) Add XPS 9315 to fan control whitelist
  hwmon: (aspeed-g6-pwm-tacho): Support for ASPEED g6 PWM/Fan tach
  dt-bindings: hwmon: Support Aspeed g6 PWM TACH Control
  dt-bindings: hwmon: fan: Add fan binding to schema
  dt-bindings: hwmon: tda38640: Add interrupt & regulator properties
  hwmon: (amc6821) add of_match table
  dt-bindings: hwmon: lm75: use common hwmon schema
  hwmon: (sis5595) drop unused DIV_TO_REG function
  dt-bindings: hwmon: reference common hwmon schema
  dt-bindings: hwmon: lltc,ltc4286: use common hwmon schema
  dt-bindings: hwmon: adi,adm1275: use common hwmon schema
  dt-bindings: hwmon: ti,ina2xx: use common hwmon schema
  dt-bindings: hwmon: add common properties
  hwmon: (pmbus/ir38064) Use PMBUS_REGULATOR_ONE to declare regulator
  hwmon: (pmbus/lm25066) Use PMBUS_REGULATOR_ONE to declare regulator
  hwmon: (pmbus/tda38640) Use PMBUS_REGULATOR_ONE to declare regulator
  regulator: dt-bindings: promote infineon buck converters to their own binding
  dt-bindings: hwmon/pmbus: ti,lm25066: document regulators
  dt-bindings: hwmon: nuvoton,nct6775: Add compatible value for NCT6799
  MAINTAINERS: Drop redundant hwmon entries
  ...
2024-03-13 11:26:58 -07:00
Mark Brown
e25293d9d9 Linux 6.8
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ASoC: Merge up release

In order to apply additional fixes that depend on the fixes merged for
v6.8 merge up the final release.
2024-03-13 18:22:15 +00:00
Linus Torvalds
69afef4af4 gpio updates for v6.9
Serialization rework:
 - use SRCU to serialize access to the global GPIO device list, to GPIO device
   structs themselves and to GPIO descriptors
 - make the GPIO subsystem resilient to the GPIO providers being unbound while
   the API calls are in progress
 - don't dereference the SRCU-protected chip pointer if the information we need
   can be obtained from the GPIO device structure
 - move some of the information contained in struct gpio_chip to struct
   gpio_device to further reduce the need to dereference the former
 - pass the GPIO device struct instead of the GPIO chip to sysfs callback to,
   again, reduce the need for accessing the latter
 - get GPIO descriptors from the GPIO device, not from the chip for the same
   reason
 - allow for mostly lockless operation of the GPIO driver API: assure
   consistency with SRCU and atomic operations
 - remove the global GPIO spinlock
 - remove the character device RW semaphore
 
 Core GPIOLIB:
 - constify pointers in GPIO API where applicable
 - unify the GPIO counting APIs for ACPI and OF
 - provide a macro for iterating over all GPIOs, not only the ones that are
   requested
 - remove leftover typedefs
 - pass the consumer device to GPIO core in devm_fwnode_gpiod_get_index() for
   improved logging
 - constify the GPIO bus type
 - don't warn about removing GPIO chips with descriptors still held by users as
   we can now handle this situation gracefully
 - remove unused logging helpers
 - unexport functions that are only used internally in the GPIO subsystem
 - set the device type (assign the relevant struct device_type) for GPIO devices
 
 New drivers:
 - add the ChromeOS EC GPIO driver
 
 Driver improvements:
 - allow building gpio-vf610 with COMPILE_TEST as well as disabling it in
   menuconfig (before it was always built for i.MX cofigs)
 - count the number of EICs using the device properties instead of hard-coding
   it in gpio-eic-sprd
 - improve the device naming, extend the debugfs output and add lockdep asserts
   to gpio-sim
 
 DT bindings:
 - document the 'label' property for gpio-pca9570
 - convert aspeed,ast2400-gpio bindings to DT schema
 - disallow unevaluated properties for gpio-mvebu
 - document a new model in renesas,rcar-gpio
 
 Documentation:
 - improve the character device kerneldocs in user-space headers
 - add proper documentation for the character device uAPI (both v1 and v2)
 - move the sysfs and gpio-mockup docs into the "obsolete" section
 - improve naming consistency for GPIO terms
 - clarify the line values description for sysfs
 - minor docs improvements
 - improve the driver API contract for setting GPIO direction
 - mark unsafe APIs as deprecated in kerneldocs and suggest replacements
 
 Other:
 - remove an obsolete test from selftests
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Merge tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "The biggest feature is the locking overhaul. Up until now the
  synchronization in the GPIO subsystem was broken. There was a single
  spinlock "protecting" multiple data structures but doing it wrong (as
  evidenced by several places where it would be released when a sleeping
  function was called and then reacquired without checking the protected
  state).

  We tried to use an RW semaphore before but the main issue with GPIO is
  that we have drivers implementing the interfaces in both sleeping and
  non-sleeping ways as well as user-facing interfaces that can be called
  both from process as well as atomic contexts. Both ends converge in
  the same code paths that can use neither spinlocks nor mutexes. The
  only reasonable way out is to use SRCU and go mostly lockless. To that
  end: we add several SRCU structs in relevant places and use them to
  assure consistency between API calls together with atomic reads and
  writes of GPIO descriptor flags where it makes sense.

  This code has spent several weeks in next and has received several
  fixes in the first week or two after which it stabilized nicely. The
  GPIO subsystem is now resilient to providers being suddenly unbound.
  We managed to also remove the existing character device RW semaphore
  and the obsolete global spinlock.

  Other than the locking rework we have one new driver (for Chromebook
  EC), much appreciated documentation improvements from Kent and the
  regular driver improvements, DT-bindings updates and GPIOLIB core
  tweaks.

  Serialization rework:
   - use SRCU to serialize access to the global GPIO device list, to
     GPIO device structs themselves and to GPIO descriptors
   - make the GPIO subsystem resilient to the GPIO providers being
     unbound while the API calls are in progress
   - don't dereference the SRCU-protected chip pointer if the
     information we need can be obtained from the GPIO device structure
   - move some of the information contained in struct gpio_chip to
     struct gpio_device to further reduce the need to dereference the
     former
   - pass the GPIO device struct instead of the GPIO chip to sysfs
     callback to, again, reduce the need for accessing the latter
   - get GPIO descriptors from the GPIO device, not from the chip for
     the same reason
   - allow for mostly lockless operation of the GPIO driver API: assure
     consistency with SRCU and atomic operations
   - remove the global GPIO spinlock
   - remove the character device RW semaphore

  Core GPIOLIB:
   - constify pointers in GPIO API where applicable
   - unify the GPIO counting APIs for ACPI and OF
   - provide a macro for iterating over all GPIOs, not only the ones
     that are requested
   - remove leftover typedefs
   - pass the consumer device to GPIO core in
     devm_fwnode_gpiod_get_index() for improved logging
   - constify the GPIO bus type
   - don't warn about removing GPIO chips with descriptors still held by
     users as we can now handle this situation gracefully
   - remove unused logging helpers
   - unexport functions that are only used internally in the GPIO
     subsystem
   - set the device type (assign the relevant struct device_type) for
     GPIO devices

  New drivers:
   - add the ChromeOS EC GPIO driver

  Driver improvements:
   - allow building gpio-vf610 with COMPILE_TEST as well as disabling it
     in menuconfig (before it was always built for i.MX cofigs)
   - count the number of EICs using the device properties instead of
     hard-coding it in gpio-eic-sprd
   - improve the device naming, extend the debugfs output and add
     lockdep asserts to gpio-sim

  DT bindings:
   - document the 'label' property for gpio-pca9570
   - convert aspeed,ast2400-gpio bindings to DT schema
   - disallow unevaluated properties for gpio-mvebu
   - document a new model in renesas,rcar-gpio

  Documentation:
   - improve the character device kerneldocs in user-space headers
   - add proper documentation for the character device uAPI (both v1 and v2)
   - move the sysfs and gpio-mockup docs into the "obsolete" section
   - improve naming consistency for GPIO terms
   - clarify the line values description for sysfs
   - minor docs improvements
   - improve the driver API contract for setting GPIO direction
   - mark unsafe APIs as deprecated in kerneldocs and suggest
     replacements

  Other:
   - remove an obsolete test from selftests"

* tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits)
  gpio: sysfs: repair export returning -EPERM on 1st attempt
  selftest: gpio: remove obsolete gpio-mockup test
  gpiolib: Deduplicate cleanup for-loop in gpiochip_add_data_with_key()
  dt-bindings: gpio: aspeed,ast2400-gpio: Convert to DT schema
  gpio: acpi: Make acpi_gpio_count() take firmware node as a parameter
  gpio: of: Make of_gpio_get_count() take firmware node as a parameter
  gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get_index()
  gpio: sim: use for_each_hwgpio()
  gpio: provide for_each_hwgpio()
  gpio: don't warn about removing GPIO chips with active users anymore
  gpio: sim: delimit the fwnode name with a ":" when generating labels
  gpio: sim: add lockdep asserts
  gpio: Add ChromeOS EC GPIO driver
  gpio: constify of_phandle_args in of_find_gpio_device_by_xlate()
  gpio: fix memory leak in gpiod_request_commit()
  gpio: constify opaque pointer "data" in gpio_device_find()
  gpio: cdev: fix a NULL-pointer dereference with DEBUG enabled
  gpio: uapi: clarify default_values being logical
  gpio: sysfs: fix inverted pointer logic
  gpio: don't let lockdep complain about inherently dangerous RCU usage
  ...
2024-03-13 11:14:55 -07:00
Linus Torvalds
6cdebf62a1 spi: Updates for v6.9
This release sees some exciting changes from David Lechner which
 implements some optimisations that have been talked about for a long
 time which allows client drivers to pre-prepare SPI messages for
 repeated or low latency use.  This lets us move work out of latency
 sensitive paths and avoid repeating work for frequently performed
 operations.  As well as being useful in itself this will also be used in
 future to allow controllers to directly trigger SPI operations (eg, from
 interrupts).
 
 Otherwise this release has mostly been focused on cleanups, plus a
 couple of new devices:
 
  - Support for pre-optimising messages.
  - A big set of updates from Uwe Kleine-König moving drivers to use APIs
    with more modern terminology for controllers.
  - Major overhaul of the s3c64xx driver.
  - Support for Google GS101 and Samsung Exynos850.
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Merge tag 'spi-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This release sees some exciting changes from David Lechner which
  implements some optimisations that have been talked about for a long
  time which allows client drivers to pre-prepare SPI messages for
  repeated or low latency use. This lets us move work out of latency
  sensitive paths and avoid repeating work for frequently performed
  operations. As well as being useful in itself this will also be used
  in future to allow controllers to directly trigger SPI operations (eg,
  from interrupts).

  Otherwise this release has mostly been focused on cleanups, plus a
  couple of new devices:

   - Support for pre-optimising messages

   - A big set of updates from Uwe Kleine-König moving drivers to use
     APIs with more modern terminology for controllers

   - Major overhaul of the s3c64xx driver

   - Support for Google GS101 and Samsung Exynos850"

* tag 'spi-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (122 commits)
  spi: Introduce SPI_INVALID_CS and is_valid_cs()
  spi: Fix types of the last chip select storage variables
  spi: Consistently use BIT for cs_index_mask
  spi: Exctract spi_dev_check_cs() helper
  spi: Exctract spi_set_all_cs_unused() helper
  spi: s3c64xx: switch exynos850 to new port config data
  spi: s3c64xx: switch gs101 to new port config data
  spi: s3c64xx: deprecate fifo_lvl_mask, rx_lvl_offset and port_id
  spi: s3c64xx: get rid of the OF alias ID dependency
  spi: s3c64xx: introduce s3c64xx_spi_set_port_id()
  spi: s3c64xx: let the SPI core determine the bus number
  spi: s3c64xx: allow FIFO depth to be determined from the compatible
  spi: s3c64xx: retrieve the FIFO depth from the device tree
  spi: s3c64xx: determine the fifo depth only once
  spi: s3c64xx: allow full FIFO masks
  spi: s3c64xx: define a magic value
  spi: dt-bindings: introduce FIFO depth properties
  spi: axi-spi-engine: use struct_size() macro
  spi: axi-spi-engine: use __counted_by() attribute
  spi: axi-spi-engine: remove p from struct spi_engine_message_state
  ...
2024-03-13 11:07:37 -07:00
Linus Torvalds
21ac5a9651 regulator: Updates for v6.9
This has been a very quiet release, mostly cleanups, API updates and
 simple device additions.  I messed up slightly and there are a couple of
 duplicated commits resulting from me leaving things in my inbox which
 didn't seem worth removing by the time I noticed them.
 
  - Conversion of several drivers to GPIO descriptors.
  - Build out the features of of the MP8859 driver.
  - Support for Qualcomm PM4125 and PM6150.
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Merge tag 'regulator-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "This has been a very quiet release, mostly cleanups, API updates and
  simple device additions. I messed up slightly and there are a couple
  of duplicated commits resulting from me leaving things in my inbox
  which didn't seem worth removing by the time I noticed them.

   - Conversion of several drivers to GPIO descriptors

   - Build out the features of of the MP8859 driver

   - Support for Qualcomm PM4125 and PM6150"

* tag 'regulator-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (31 commits)
  regulator: lp8788-buck: fix copy and paste bug in lp8788_dvs_gpio_request()
  regulator: core: make regulator_class constant
  regulator: da9121: Remove unused of_gpio.h
  regulator: userspace-consumer: add module device table
  regulator: dt-bindings: gpio-regulator: Fix "gpios-states" and "states" array bounds
  regulator: mp8859: Implement set_current_limit()
  regulator: mp8859: Report slew rate
  regulator: mp8859: Support status and error readback
  regulator: mp8859: Support active discharge control
  regulator: mp8859: Support mode operations
  regulator: mp8859: Support enable control
  regulator: mp8859: Validate and log device identifier information
  regulator: mp8859: Specify register accessibility and enable caching
  regulator: max8998: Convert to GPIO descriptors
  regulator: max8997: Convert to GPIO descriptors
  regulator: lp8788-buck: Fully convert to GPIO descriptors
  regulator: da9055: Fully convert to GPIO descriptors
  regulator: max8973: Finalize switch to GPIO descriptors
  regulator: dt-bindings: qcom,usb-vbus-regulator: add support for PM4125
  regulator: dt-bindings: qcom,usb-vbus-regulator: add support for PM4125
  ...
2024-03-13 11:05:20 -07:00
Linus Torvalds
b30f2db0b7 regmap: Updates for v6.9
Just two updates this time around, a rework of max_register handling
 which enables us to support devices with only one register better and a
 new test which will be used to validate use of some new SPI
 optimisations which will be coming in during this merge window.
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Merge tag 'regmap-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "Just two updates this time around, a rework of max_register handling
  which enables us to support devices with only one register better and
  a new test which will be used to validate use of some new SPI
  optimisations which will be coming in during this merge window"

* tag 'regmap-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: kunit: Add a test for ranges in combination with windows
  regmap: rework ->max_register handling
2024-03-13 11:01:21 -07:00
Linus Torvalds
245b6f3239 MMC core:
- Drop the use of BLK_BOUNCE_HIGH
  - Fix partition switch for GP3
  - Remove usage of the deprecated ida_simple API
 
 MMC host:
  - cqhci: Update bouncing email-addresses in MAINTAINERS
  - davinci_mmc: Use sg_miter for PIO
  - dw_mmc-hi3798cv200: Convert the DT bindings to YAML
  - dw_mmc-hi3798mv200: Add driver for the new dw_mmc variant
  - fsl-imx-esdhc: A couple of corrections/updates to the DT bindings
  - meson-mx-sdhc: Drop use of the ->card_hw_reset() callback
  - moxart-mmc: Use sg_miter for PIO
  - moxart-mmc: Fix accounting for DMA transfers
  - mvsdio: Use sg_miter for PIO
  - mxcmmc: Use sg_miter for PIO
  - omap: Use sg_miter for PIO
  - renesas,sdhi: Add support for R-Car V4M variant
  - sdhci-esdhc-mcf: Use sg_miter for swapping
  - sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002 variants
  - sh_mmcif: Use sg_miter for PIO
  - tmio: Avoid concurrent runs of mmc_request_done()
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Merge tag 'mmc-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Drop the use of BLK_BOUNCE_HIGH
   - Fix partition switch for GP3
   - Remove usage of the deprecated ida_simple API

  MMC host:
   - cqhci: Update bouncing email-addresses in MAINTAINERS
   - davinci_mmc: Use sg_miter for PIO
   - dw_mmc-hi3798cv200: Convert the DT bindings to YAML
   - dw_mmc-hi3798mv200: Add driver for the new dw_mmc variant
   - fsl-imx-esdhc: A couple of corrections/updates to the DT bindings
   - meson-mx-sdhc: Drop use of the ->card_hw_reset() callback
   - moxart-mmc: Use sg_miter for PIO
   - moxart-mmc: Fix accounting for DMA transfers
   - mvsdio: Use sg_miter for PIO
   - mxcmmc: Use sg_miter for PIO
   - omap: Use sg_miter for PIO
   - renesas,sdhi: Add support for R-Car V4M variant
   - sdhci-esdhc-mcf: Use sg_miter for swapping
   - sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002 variants
   - sh_mmcif: Use sg_miter for PIO
   - tmio: Avoid concurrent runs of mmc_request_done()"

* tag 'mmc-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (44 commits)
  mmc: core: make mmc_host_class constant
  mmc: core: Fix switch on gp3 partition
  mmc: tmio: comment the ERR_PTR usage in this driver
  mmc: mmc_spi: Don't mention DMA direction
  mmc: dw_mmc: Remove unused of_gpio.h
  mmc: dw_mmc: add support for hi3798mv200
  dt-bindings: mmc: hisilicon,hi3798cv200-dw-mshc: add Hi3798MV200 binding
  dt-bindings: mmc: dw-mshc-hi3798cv200: convert to YAML
  mmc: dw_mmc-hi3798cv200: remove MODULE_ALIAS()
  mmc: core: Use a struct device* as in-param to mmc_of_parse_clk_phase()
  mmc: wmt-sdmmc: remove an incorrect release_mem_region() call in the .remove function
  mmc: tmio: avoid concurrent runs of mmc_request_done()
  dt-bindings: mmc: fsl-imx-mmc: Document the required clocks
  mmc: sh_mmcif: Advance sg_miter before reading blocks
  mmc: sh_mmcif: sg_miter must not be atomic
  mmc: sdhci-esdhc-mcf: Flag the sg_miter as atomic
  dt-bindings: mmc: fsl-imx-esdhc: add default and 100mhz state
  mmc: core: constify the struct device_type usage
  mmc: sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002
  dt-bindings: mmc: sdhci-of-dwcmhsc: Add Sophgo CV1800B and SG2002 support
  ...
2024-03-13 10:59:28 -07:00
Linus Torvalds
aeb152910a pwm: Changes for v6.9-rc1
This contains the usual amount of driver and device tree changes.
 Additionally there is a big rework of how pwm lowlevel drivers are
 registered to prepare adding character device support.
 
 Thanks to Dharma Balasubiramani, Dong Aisheng, Duje Mihanović, Jerome
 Brunet, Raag Jadav and Rafał Miłecki for their contributions. And sorry
 for those who still need some patience because I didn't manage to empty
 my review queue.
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Merge tag 'pwm/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

Pull pwm updates from Uwe Kleine-König:
 "This contains the usual amount of driver and device tree changes.
  Additionally there is a big rework of how pwm lowlevel drivers are
  registered to prepare adding character device support.

  Thanks to Dharma Balasubiramani, Dong Aisheng, Duje Mihanović, Jerome
  Brunet, Raag Jadav and Rafał Miłecki for their contributions. And
  sorry for those who still need some patience because I didn't manage
  to empty my review queue"

* tag 'pwm/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (185 commits)
  pwm: imx-tpm: fix probe crash due to access registers without clock
  pwm: meson: generalize 4 inputs clock on meson8 pwm type
  dt-bindings: pwm: amlogic: Add a new binding for meson8 pwm types
  dt-bindings: pwm: amlogic: fix s4 bindings
  pwm: dwc: simplify error handling
  pwm: dwc: Add 16 channel support for Intel Elkhart Lake
  pwm: dwc: drop redundant error check
  staging: greybus: pwm: Make use of devm_pwmchip_alloc() function
  staging: greybus: pwm: Rework how the number of PWM lines is determined
  staging: greybus: pwm: Drop unused gb_connection_set_data()
  staging: greybus: pwm: Rely on pwm framework to pass a valid hwpwm
  staging: greybus: pwm: Make use of pwmchip_parent() accessor
  staging: greybus: pwm: Change prototype of helpers to prepare further changes
  leds: qcom-lpg: Make use of devm_pwmchip_alloc() function
  drm/bridge: ti-sn65dsi86: Make use of devm_pwmchip_alloc() function
  drm/bridge: ti-sn65dsi86: Make use of pwmchip_parent() accessor
  gpio: mvebu: Make use of devm_pwmchip_alloc() function
  pwm: xilinx: Make use of devm_pwmchip_alloc() function
  pwm: xilinx: Prepare removing pwm_chip from driver data
  pwm: vt8500: Make use of devm_pwmchip_alloc() function
  ...
2024-03-13 10:51:39 -07:00
Linus Torvalds
aa7d6513d6 chrome platform firmware changes for 6.9
* Improvements
 
   - Allow userspace to automatically load coreboot modules by adding
     modaliases and sending uevents.
 
 * Misc
 
   - Make bus_type const.
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Merge tag 'tag-chrome-platform-firmware-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform firmware updates from Tzung-Bi Shih:

 - Allow userspace to automatically load coreboot modules by adding
   modaliases and sending uevents

 - Make bus_type const

* tag 'tag-chrome-platform-firmware-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  firmware: coreboot: Replace tag with id table in driver struct
  firmware: coreboot: Generate aliases for coreboot modules
  firmware: coreboot: Generate modalias uevent for devices
  firmware: coreboot: make coreboot_bus_type const
2024-03-13 10:10:30 -07:00
Linus Torvalds
61387b8dcf - Introduce the DM vdo target which provides block-level
deduplication, compression, and thin provisioning. Please see both:
   Documentation/admin-guide/device-mapper/vdo.rst and
   Documentation/admin-guide/device-mapper/vdo-design.rst
 
 - The DM vdo target handles its concurrency by pinning an IO, and
   subsequent stages of handling that IO, to a particular VDO thread.
   This aspect of VDO is "unique" but its overall implementation is
   very tightly coupled to its mostly lockless threading model.
   As such, VDO is not easily changed to use more traditional
   finer-grained locking and Linux workqueues. Please see the "Zones
   and Threading" section of vdo-design.rst
 
 - The DM vdo target has been used in production for many years but has
   seen significant changes over the past ~6 years to prepare it for
   upstream inclusion. The codebase is still large but it is isolated
   to drivers/md/dm-vdo/ and has been made considerably more
   approachable and maintainable.
 
 - Matt Sakai has been added to the MAINTAINERS file to reflect that he
   will send VDO changes upstream through the DM subsystem maintainers.
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Merge tag 'for-6.9/dm-vdo' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper VDO target from Mike Snitzer:
 "Introduce the DM vdo target which provides block-level deduplication,
  compression, and thin provisioning. Please see:

      Documentation/admin-guide/device-mapper/vdo.rst
      Documentation/admin-guide/device-mapper/vdo-design.rst

  The DM vdo target handles its concurrency by pinning an IO, and
  subsequent stages of handling that IO, to a particular VDO thread.
  This aspect of VDO is "unique" but its overall implementation is very
  tightly coupled to its mostly lockless threading model. As such, VDO
  is not easily changed to use more traditional finer-grained locking
  and Linux workqueues. Please see the "Zones and Threading" section of
  vdo-design.rst

  The DM vdo target has been used in production for many years but has
  seen significant changes over the past ~6 years to prepare it for
  upstream inclusion. The codebase is still large but it is isolated to
  drivers/md/dm-vdo/ and has been made considerably more approachable
  and maintainable.

  Matt Sakai has been added to the MAINTAINERS file to reflect that he
  will send VDO changes upstream through the DM subsystem maintainers"

* tag 'for-6.9/dm-vdo' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (142 commits)
  dm vdo: document minimum metadata size requirements
  dm vdo: remove meaningless version number constant
  dm vdo: remove vdo_perform_once
  dm vdo block-map: Remove stray semicolon
  dm vdo string-utils: change from uds_ to vdo_ namespace
  dm vdo logger: change from uds_ to vdo_ namespace
  dm vdo funnel-queue: change from uds_ to vdo_ namespace
  dm vdo indexer: fix use after free
  dm vdo logger: remove log level to string conversion code
  dm vdo: document log_level parameter
  dm vdo: add 'log_level' module parameter
  dm vdo: remove all sysfs interfaces
  dm vdo target: eliminate inappropriate uses of UDS_SUCCESS
  dm vdo indexer: update ASSERT and ASSERT_LOG_ONLY usage
  dm vdo encodings: update some stale comments
  dm vdo permassert: audit all of ASSERT to test for VDO_SUCCESS
  dm-vdo funnel-workqueue: return VDO_SUCCESS from make_simple_work_queue
  dm vdo thread-utils: return VDO_SUCCESS on vdo_create_thread success
  dm vdo int-map: return VDO_SUCCESS on success
  dm vdo: check for VDO_SUCCESS return value from memory-alloc functions
  ...
2024-03-13 09:57:23 -07:00
Roger Pau Monne
38620fc4e8 x86/xen: attempt to inflate the memory balloon on PVH
When running as PVH or HVM Linux will use holes in the memory map as scratch
space to map grants, foreign domain pages and possibly miscellaneous other
stuff.  However the usage of such memory map holes for Xen purposes can be
problematic.  The request of holesby Xen happen quite early in the kernel boot
process (grant table setup already uses scratch map space), and it's possible
that by then not all devices have reclaimed their MMIO space.  It's not
unlikely for chunks of Xen scratch map space to end up using PCI bridge MMIO
window memory, which (as expected) causes quite a lot of issues in the system.

At least for PVH dom0 we have the possibility of using regions marked as
UNUSABLE in the e820 memory map.  Either if the region is UNUSABLE in the
native memory map, or it has been converted into UNUSABLE in order to hide RAM
regions from dom0, the second stage translation page-tables can populate those
areas without issues.

PV already has this kind of logic, where the balloon driver is inflated at
boot.  Re-use the current logic in order to also inflate it when running as
PVH.  onvert UNUSABLE regions up to the ratio specified in EXTRA_MEM_RATIO to
RAM, while reserving them using xen_add_extra_mem() (which is also moved so
it's no longer tied to CONFIG_PV).

[jgross: fixed build for CONFIG_PVH without CONFIG_XEN_PVH]

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20240220174341.56131-1-roger.pau@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-03-13 17:48:26 +01:00
Linus Torvalds
c0499a0812 - Convert the DM verity and crypt targets from (ab)using tasklets to
using BH workqueues.  These changes were coordinated with Tejun and
   are based ontop of DM's 6.9 changes and Tejun's 6.9 workqueue tree.
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Merge tag 'for-6.9/dm-bh-wq' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper BH workqueue conversion from Mike Snitzer:
 "Convert the DM verity and crypt targets from (ab)using tasklets to
  using BH workqueues.

  These changes were coordinated with Tejun and are based ontop of DM's
  6.9 changes and Tejun's 6.9 workqueue tree"

* tag 'for-6.9/dm-bh-wq' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm-verity: Convert from tasklet to BH workqueue
  dm-crypt: Convert from tasklet to BH workqueue
2024-03-13 09:46:51 -07:00
Linus Torvalds
d2bac0823d - Fix DM core's IO submission (which include dm-io and dm-bufio) such
that a bio's IO priority is propagated. Work focused on enabling
   both DM crypt and verity targets to retain the appropriate IO
   priority.
 
 - Fix DM raid reshape logic to not allow an empty flush bio to be
   requeued due to false concern about the bio, which doesn't have a
   data payload, accessing beyond the end of the device.
 
 - Fix DM core's internal resume so that it properly calls both presume
   and resume methods, which fixes the potential for a postsuspend and
   resume imbalance.
 
 - Update DM verity target to set DM_TARGET_SINGLETON flag because it
   doesn't make sense to have a DM table with a mix of targets that
   include dm-verity.
 
 - Small cleanups in DM crypt, thin, and integrity targets.
 
 - Fix references to dm-devel mailing list to use latest list address.
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Merge tag 'for-6.9/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Fix DM core's IO submission (which include dm-io and dm-bufio) such
   that a bio's IO priority is propagated. Work focused on enabling both
   DM crypt and verity targets to retain the appropriate IO priority

 - Fix DM raid reshape logic to not allow an empty flush bio to be
   requeued due to false concern about the bio, which doesn't have a
   data payload, accessing beyond the end of the device

 - Fix DM core's internal resume so that it properly calls both presume
   and resume methods, which fixes the potential for a postsuspend and
   resume imbalance

 - Update DM verity target to set DM_TARGET_SINGLETON flag because it
   doesn't make sense to have a DM table with a mix of targets that
   include dm-verity

 - Small cleanups in DM crypt, thin, and integrity targets

 - Fix references to dm-devel mailing list to use latest list address

* tag 'for-6.9/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: call the resume method on internal suspend
  dm raid: fix false positive for requeue needed during reshape
  dm-integrity: set max_integrity_segments in dm_integrity_io_hints
  dm: update relevant MODULE_AUTHOR entries to latest dm-devel mailing list
  dm ioctl: update DM_DRIVER_EMAIL to new dm-devel mailing list
  dm verity: set DM_TARGET_SINGLETON feature flag
  dm crypt: Fix IO priority lost when queuing write bios
  dm verity: Fix IO priority lost when reading FEC and hash
  dm bufio: Support IO priority
  dm io: Support IO priority
  dm crypt: remove redundant state settings after waking up
  dm thin: add braces around conditional code that spans lines
2024-03-13 09:38:10 -07:00
Linus Torvalds
57aaf9134c ata changes for 6.9-rc1
- Do not enable LPM for external ports (hotplug-capable ports or eSATA
    ports), as the HBA will not be able to detect hot plug removal events
    when LPM is enabled. (from me)
 
  - Drop the board type board_ahci_low_power. Now when we make sure that we
    won't enable LPM for external ports, we can always set the LPM policy to
    CONFIG_SATA_MOBILE_LPM_POLICY for internal ports. There is thus no
    longer any need for the board type board_ahci_low_power, so it can be
    removed. (As before, LPM features not supported by the HBA and/or the
    device will not be enabled, regardless of the LPM policy Kconfig.)
    (from Mario Limonciello)
 
    Note that the default CONFIG_SATA_MOBILE_LPM_POLICY value is still 0
    (which will not try to enable any LPM features), however, most Linux
    distributions override this and set it to 3 (Medium power with DIPM).
    We intend to change the default to 3 in the coming cycles, but we will
    wait a cycle or two.
 
  - Add board type board_ahci_pcs_quirk and make all legacy Intel platforms
    use it. The Intel PCS quirk was being applied to basically all Intel
    platforms, which caused some issues (the device failing to come back
    after a reset), when being applied to newer Intel platforms where it
    shouldn't have been applied. Add board type board_ahci_pcs_quirk and
    make legacy Intel platforms use it. New platforms can be added using
    board type board_ahci (which will not have the quirk applied).
    (from me)
 
  - Rename board_ahci_nosntf to board_ahci_pcs_quirk_no_sntf to more clearly
    highlight that it applies two different quirks. (from me)
 
  - Modify the ahci_broken_devslp() quirk to be implemented like all the
    other quirks (i.e. define a board type for the quirk). (from me)
 
  - Drop unused board_ahci_noncq board type. (from me)
 
  - Rename board_ahci_nomsi to board_ahci_no_msi to match the other board
    types. (from me)
 
  - Make pata_parport_bus_type const. (from Ricardo B. Marliere)
 
  - Remove at91 compact flash device tree binding. (The binding is not used
    by any driver.) (from Hari Prasath Gujulan Elango)
 
  - Convert MediaTek device tree binding to json-schema.
    (from Rafał Miłecki)
 
  - At boot, print the number of implemented ports, instead of printing the
    maximum number of ports supported by the HBA silicon. (from me)
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Merge tag 'ata-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux

Pull ata updates from Niklas Cassel:

 - Do not enable LPM for external ports (hotplug-capable ports or eSATA
   ports), as the HBA will not be able to detect hot plug removal events
   when LPM is enabled (me)

 - Drop the board type board_ahci_low_power. Now when we make sure that
   we won't enable LPM for external ports, we can always set the LPM
   policy to CONFIG_SATA_MOBILE_LPM_POLICY for internal ports. There is
   thus no longer any need for the board type board_ahci_low_power, so
   it can be removed. (As before, LPM features not supported by the HBA
   and/or the device will not be enabled, regardless of the LPM policy
   Kconfig) (Mario Limonciello)

   Note that the default CONFIG_SATA_MOBILE_LPM_POLICY value is still 0
   (which will not try to enable any LPM features), however, most Linux
   distributions override this and set it to 3 (Medium power with DIPM).
   We intend to change the default to 3 in the coming cycles, but we
   will wait a cycle or two.

 - Add board type board_ahci_pcs_quirk and make all legacy Intel
   platforms use it. The Intel PCS quirk was being applied to basically
   all Intel platforms, which caused some issues (the device failing to
   come back after a reset), when being applied to newer Intel platforms
   where it shouldn't have been applied.

   New platforms can be added using board type board_ahci, which will
   not have the quirk applied (me)

 - Rename board_ahci_nosntf to board_ahci_pcs_quirk_no_sntf to more
   clearly highlight that it applies two different quirks (me)

 - Modify the ahci_broken_devslp() quirk to be implemented like all the
   other quirks (i.e. define a board type for the quirk) (me)

 - Drop unused board_ahci_noncq board type (me)

 - Rename board_ahci_nomsi to board_ahci_no_msi to match the other board
   types (me)

 - Make pata_parport_bus_type const (Ricardo B. Marliere)

 - Remove at91 compact flash device tree binding. (The binding is not
   used by any driver.) (from Hari Prasath Gujulan Elango)

 - Convert MediaTek device tree binding to json-schema (Rafał Miłecki)

 - At boot, print the number of implemented ports, instead of printing
   the maximum number of ports supported by the HBA silicon (me)

* tag 'ata-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ahci: print the number of implemented ports
  dt-bindings: ata: convert MediaTek controller to the json-schema
  ahci: rename board_ahci_nomsi
  ahci: drop unused board_ahci_noncq
  ahci: clean up ahci_broken_devslp quirk
  ahci: rename board_ahci_nosntf
  ahci: clean up intel_pcs_quirk
  ata: ahci: Drop low power policy board type
  ata: ahci: do not enable LPM on external ports
  ata: ahci: drop hpriv param from ahci_update_initial_lpm_policy()
  ata: ahci: a hotplug capable port is an external port
  ata: ahci: move marking of external port earlier
  dt-bindings: ata: atmel: remove at91 compact flash documentation
  ata: pata_parport: make pata_parport_bus_type const
2024-03-13 09:29:53 -07:00
Linus Torvalds
7d62cb2a59 dma-mapping updates for Linux 6.9
- leak pages on dma_set_decrypted() failure (Rick Edgecombe)
  - add a new swiotlb debugfs file (ZhangPeng)
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Merge tag 'dma-mapping-6.9-2024-03-11' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - fix leaked pages on dma_set_decrypted() failure (Rick Edgecombe)

 - add a new swiotlb debugfs file (ZhangPeng)

* tag 'dma-mapping-6.9-2024-03-11' of git://git.infradead.org/users/hch/dma-mapping:
  dma-direct: Leak pages on dma_set_decrypted() failure
  swiotlb: add debugfs to track swiotlb transient pool usage
2024-03-13 09:23:21 -07:00
Arnd Bergmann
72ebb41b88 soc: fsl: dpio: fix kcalloc() argument order
A previous bugfix added a call to kcalloc(), which starting in gcc-14
causes a harmless warning about the argument order:

drivers/soc/fsl/dpio/dpio-service.c: In function 'dpaa2_io_service_enqueue_multiple_desc_fq':
drivers/soc/fsl/dpio/dpio-service.c:526:29: error: 'kcalloc' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Werror=calloc-transposed-args]
  526 |         ed = kcalloc(sizeof(struct qbman_eq_desc), 32, GFP_KERNEL);
      |                             ^~~~~~
drivers/soc/fsl/dpio/dpio-service.c:526:29: note: earlier argument should specify number of elements, later size of each element

Since the two are only multiplied, the order does not change the
behavior, so just fix it now to shut up the compiler warning.

Dmity independently came up with the same fix.

Fixes: 5c4a5999b2 ("soc: fsl: dpio: avoid stack usage warning")
Reported-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2024-03-13 17:17:32 +01:00
Linus Torvalds
8c9c2f851b IOMMU Updates for Linux v6.9
Including:
 
 	- Core changes:
 	  - Constification of bus_type pointer
 	  - Preparations for user-space page-fault delivery
 	  - Use a named kmem_cache for IOVA magazines
 
 	- Intel VT-d changes from Lu Baolu:
 	  - Add RBTree to track iommu probed devices
 	  - Add Intel IOMMU debugfs document
 	  - Cleanup and refactoring
 
 	- ARM-SMMU Updates from Will Deacon:
 	  - Device-tree binding updates for a bunch of Qualcomm SoCs
 	  - SMMUv2: Support for Qualcomm X1E80100 MDSS
 	  - SMMUv3: Significant rework of the driver's STE manipulation and
 	    domain handling code. This is the initial part of a larger scale
 	    rework aiming to improve the driver's implementation of the
 	    IOMMU-API in preparation for hooking up IOMMUFD support.
 
 	- AMD-Vi Updates:
 	  - Refactor GCR3 table support for SVA
 	  - Cleanups
 
 	- Some smaller cleanups and fixes
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Merge tag 'iommu-updates-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:
 "Core changes:
    - Constification of bus_type pointer
    - Preparations for user-space page-fault delivery
    - Use a named kmem_cache for IOVA magazines

  Intel VT-d changes from Lu Baolu:
    - Add RBTree to track iommu probed devices
    - Add Intel IOMMU debugfs document
    - Cleanup and refactoring

  ARM-SMMU Updates from Will Deacon:
    - Device-tree binding updates for a bunch of Qualcomm SoCs
    - SMMUv2: Support for Qualcomm X1E80100 MDSS
    - SMMUv3: Significant rework of the driver's STE manipulation and
      domain handling code. This is the initial part of a larger scale
      rework aiming to improve the driver's implementation of the
      IOMMU-API in preparation for hooking up IOMMUFD support.

  AMD-Vi Updates:
    - Refactor GCR3 table support for SVA
    - Cleanups

  Some smaller cleanups and fixes"

* tag 'iommu-updates-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (88 commits)
  iommu: Fix compilation without CONFIG_IOMMU_INTEL
  iommu/amd: Fix sleeping in atomic context
  iommu/dma: Document min_align_mask assumption
  iommu/vt-d: Remove scalabe mode in domain_context_clear_one()
  iommu/vt-d: Remove scalable mode context entry setup from attach_dev
  iommu/vt-d: Setup scalable mode context entry in probe path
  iommu/vt-d: Fix NULL domain on device release
  iommu: Add static iommu_ops->release_domain
  iommu/vt-d: Improve ITE fault handling if target device isn't present
  iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected
  PCI: Make pci_dev_is_disconnected() helper public for other drivers
  iommu/vt-d: Use device rbtree in iopf reporting path
  iommu/vt-d: Use rbtree to track iommu probed devices
  iommu/vt-d: Merge intel_svm_bind_mm() into its caller
  iommu/vt-d: Remove initialization for dynamically heap-allocated rcu_head
  iommu/vt-d: Remove treatment for revoking PASIDs with pending page faults
  iommu/vt-d: Add the document for Intel IOMMU debugfs
  iommu/vt-d: Use kcalloc() instead of kzalloc()
  iommu/vt-d: Remove INTEL_IOMMU_BROKEN_GFX_WA
  iommu: re-use local fwnode variable in iommu_ops_from_fwnode()
  ...
2024-03-13 09:15:30 -07:00
Uwe Kleine-König
cc87253e22 xen/grant-dma-iommu: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20240307181135.191192-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-03-13 17:09:26 +01:00