- Implement masked user access
- Add support for internal only per-CPU instructions and inline the bpf_get_smp_processor_id() and bpf_get_current_task()
- Fix pSeries MSI-X allocation failure when quota is exceeded
- Fix recursive pci_lock_rescan_remove locking in EEH event handling
- Support tailcalls with subprogs & BPF exceptions on 64bit
- Extend "trusted" keys to support the PowerVM Key Wrapping Module (PKWM)
Thanks to: Abhishek Dubey, Christophe Leroy, Gaurav Batra, Guangshuo Li, Jarkko
Sakkinen, Mahesh Salgaonkar, Mimi Zohar, Miquel Sabaté Solà, Nam Cao, Narayana
Murty N, Nayna Jain, Nilay Shroff, Puranjay Mohan, Saket Kumar Bhaskar, Sourabh
Jain, Srish Srinivasan, Venkat Rao Bagalkote,
-----BEGIN PGP SIGNATURE-----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=zJoL
-----END PGP SIGNATURE-----
Merge tag 'powerpc-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates for 7.0
- Implement masked user access
- Add bpf support for internal only per-CPU instructions and inline the
bpf_get_smp_processor_id() and bpf_get_current_task() functions
- Fix pSeries MSI-X allocation failure when quota is exceeded
- Fix recursive pci_lock_rescan_remove locking in EEH event handling
- Support tailcalls with subprogs & BPF exceptions on 64bit
- Extend "trusted" keys to support the PowerVM Key Wrapping Module
(PKWM)
Thanks to Abhishek Dubey, Christophe Leroy, Gaurav Batra, Guangshuo Li,
Jarkko Sakkinen, Mahesh Salgaonkar, Mimi Zohar, Miquel Sabaté Solà, Nam
Cao, Narayana Murty N, Nayna Jain, Nilay Shroff, Puranjay Mohan, Saket
Kumar Bhaskar, Sourabh Jain, Srish Srinivasan, and Venkat Rao Bagalkote.
* tag 'powerpc-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (27 commits)
powerpc/pseries: plpks: export plpks_wrapping_is_supported
docs: trusted-encryped: add PKWM as a new trust source
keys/trusted_keys: establish PKWM as a trusted source
pseries/plpks: add HCALLs for PowerVM Key Wrapping Module
pseries/plpks: expose PowerVM wrapping features via the sysfs
powerpc/pseries: move the PLPKS config inside its own sysfs directory
pseries/plpks: fix kernel-doc comment inconsistencies
powerpc/smp: Add check for kcalloc() failure in parse_thread_groups()
powerpc: kgdb: Remove OUTBUFMAX constant
powerpc64/bpf: Additional NVR handling for bpf_throw
powerpc64/bpf: Support exceptions
powerpc64/bpf: Add arch_bpf_stack_walk() for BPF JIT
powerpc64/bpf: Avoid tailcall restore from trampoline
powerpc64/bpf: Support tailcalls with subprogs
powerpc64/bpf: Moving tail_call_cnt to bottom of frame
powerpc/eeh: fix recursive pci_lock_rescan_remove locking in EEH event handling
powerpc/pseries: Fix MSI-X allocation failure when quota is exceeded
powerpc/iommu: bypass DMA APIs for coherent allocations for pre-mapped memory
powerpc64/bpf: Inline bpf_get_smp_processor_id() and bpf_get_current_task/_btf()
powerpc64/bpf: Support internal-only MOV instruction to resolve per-CPU addrs
...
The hypervisor generated wrapping key is an AES-GCM-256 symmetric key which
is stored in a non-volatile, secure, and encrypted storage called the Power
LPAR Platform KeyStore. It has policy based protections that prevent it
from being read out or exposed to the user.
Implement H_PKS_GEN_KEY, H_PKS_WRAP_OBJECT, and H_PKS_UNWRAP_OBJECT HCALLs
to enable using the PowerVM Key Wrapping Module (PKWM) as a new trust
source for trusted keys. Disallow H_PKS_READ_OBJECT, H_PKS_SIGNED_UPDATE,
and H_PKS_WRITE_OBJECT for objects with the 'wrapping key' policy set.
Capture the availability status for the H_PKS_WRAP_OBJECT interface.
Signed-off-by: Srish Srinivasan <ssrish@linux.ibm.com>
Tested-by: Nayna Jain <nayna@linux.ibm.com>
Reviewed-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260127145228.48320-5-ssrish@linux.ibm.com
The root document usually has a special :ref:`genindex` link to the
generated index. This is also the case for Documentation/index.rst. The
other index.rst files deeper in the directory hierarchy usually don't.
For SPHINXDIRS builds, the root document isn't Documentation/index.rst,
but some other index.rst in the hierarchy. Currently they have a
".. only::" block to add the index link when doing SPHINXDIRS html
builds.
This is obviously very tedious and repetitive. The link is also added to
all index.rst files in the hierarchy for SPHINXDIRS builds, not just the
root document.
Put the boilerplate in a sphinx-includes/subproject-index.rst file, and
include it at the end of the root document for subproject builds in an
ad-hoc source-read extension defined in conf.py.
For now, keep having the boilerplate in translations, because this
approach currently doesn't cover translated index link headers.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
[jc: did s/doctree/kern_doc_dir/ ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260123143149.2024303-1-jani.nikula@intel.com>
- Bring the kernel memory-model docs into the Sphinx build in the "literal
include" mode.
- Lots of build-infrastructure work, further cleaning up long-term
kernel-doc technical debt. The sphinx-pre-install tool has been
converted to Python and updated for current systems.
- A new tool to detect when documents have been moved and generate HTML
redirects; this can be used on kernel.org (or any other site hosting the
rendered docs) to avoid breaking links.
- Automated processing of the YAML files describing the netlink protocol.
- A significant update of the maintainer's PGP guide.
...and a seemingly endless series of typo fixes, build-problem fixes, etc.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmjbwOoACgkQF0NaE2wM
flis1gf/ZvRi3Mo5hIsuGyQfs5kw/jx0N7SG4QYf2rEnt5ZGNa5SkyOVKsWQKTgK
LesQkdaCA0xHMoUWSvZRwn2a0+acpeMm6viXjewd2mU52sSNmSkKG4WsZyxfnOYS
36fkZ1qymQkJ4uSvx5NScTiIBqZx+Qfgkj0eNnXcpJd2vYeAVSu4szsFxeUvcJFj
Ckq3+3DQ5p/dcWwgvdlLKEJGj98Q3cqLrMn8ycbNtwzo3mdVbrlP5+qqNslZC6xY
Nqpv9HXbFWNCaL6YWCybcNOZ4F5UVno1ap2F3imTD8Rp1iG77zAQV5lMlq4Gksf4
kECLc1TtTKSgmgWHmi1sgudqM4Xqpw==
=Qe3Z
-----END PGP SIGNATURE-----
Merge tag 'docs-6.18' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a relatively busy cycle in docsland, with changes all
over:
- Bring the kernel memory-model docs into the Sphinx build in the
"literal include" mode.
- Lots of build-infrastructure work, further cleaning up long-term
kernel-doc technical debt. The sphinx-pre-install tool has been
converted to Python and updated for current systems.
- A new tool to detect when documents have been moved and generate
HTML redirects; this can be used on kernel.org (or any other site
hosting the rendered docs) to avoid breaking links.
- Automated processing of the YAML files describing the netlink
protocol.
- A significant update of the maintainer's PGP guide.
... and a seemingly endless series of typo fixes, build-problem fixes,
etc"
* tag 'docs-6.18' of git://git.lwn.net/linux: (193 commits)
Documentation/features: Update feature lists for 6.17-rc7
docs: remove cdomain.py
Documentation/process: submitting-patches: fix typo in "were do"
docs: dev-tools/lkmm: Fix typo of missing file extension
Documentation: trace: histogram: Convert ftrace docs cross-reference
Documentation: trace: histogram-design: Wrap introductory note in note:: directive
Documentation: trace: historgram-design: Separate sched_waking histogram section heading and the following diagram
Documentation: trace: histogram-design: Trim trailing vertices in diagram explanation text
Documentation: trace: histogram: Fix histogram trigger subsection number order
docs: driver-api: fix spelling of "buses".
Documentation: fbcon: Use admonition directives
Documentation: fbcon: Reindent 8th step of attach/detach/unload
Documentation: fbcon: Add boot options and attach/detach/unload section headings
docs: filesystems: sysfs: add remaining top level sysfs directory descriptions
docs: filesystems: sysfs: clarify symlink destinations in dev and bus/devices descriptions
docs: filesystems: sysfs: remove top level sysfs net directory
docs: maintainer: Fix ambiguous subheading formatting
docs: kdoc: a few more dump_typedef() tweaks
docs: kdoc: remove redundant comment stripping in dump_typedef()
docs: kdoc: remove some dead code in dump_typedef()
...
Documentation for vpa-dtl (Virtual Processor Area - Dispatch Trace Log)
PMU interface. And how it can be used to collect the distrace trace log
entries in perf data, how to process/report as part of perf report/perf
script.
Signed-off-by: Athira Rajeev <atrajeev@linux.ibm.com>
Tested-by: Tejas Manhas <tejas05@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250915102947.26681-8-atrajeev@linux.ibm.com
Reiserfs has been removed in 6.13, there are still some mentions in the
documentation about it and the tools. Remove those that don't seem
relevant anymore but keep references to reiserfs' r5 hash used by some
code.
There's one change in a script scripts/selinux/install_policy.sh but it
does not seem to be relevant either.
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250813100053.1291961-1-dsterba@suse.com
Fix the following documentation build error, which was introduced when
Documentation/arch/powerpc/htm.rst was added to the repository without
any reference to the document.
Documentation/arch/powerpc/htm.rst: WARNING: document isn't included in any toctree [toc.not_included]
Fixes: ab1456c5aa ("powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface")
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Brigham Campbell <me@brighamcampbell.com>
Tested-by: Athira Rajeev <atrajeev@linux.ibm.com>
Fixes: ab1456c5aa ("powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface")
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250528054146.2658537-2-me@brighamcampbell.com
Documentation for HTM (Hardware Trace Macro) debugfs interface
and how it can be used to configure/control the HTM operations.
Signed-off-by: Athira Rajeev <atrajeev@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250420180844.53128-10-atrajeev@linux.ibm.com
Update kvm-nested APIv2 documentation to include five new
Guest-State-Elements to fetch the hostwide counters. These counters are
per L1-Lpar and indicate the amount of Heap/Page-table memory allocated,
available and Page-table memory reclaimed for all L2-Guests active
instances
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250416162740.93143-2-vaibhav@linux.ibm.com
- Removal of support for IBM Cell Blades
- SMP support for microwatt platform
- Support for inline static calls on PPC32
- Enable pmu selftests for power11 platform
- Enable hardware trace macro (HTM) hcall support
- Support for limited address mode capability
- Changes to RMA size from 512 MB to 768 MB to handle fadump
- Misc fixes and cleanups
Thanks to: Abhishek Dubey, Amit Machhiwal, Andreas Schwab, Arnd Bergmann,
Athira Rajeev, Avnish Chouhan, Christophe Leroy, Disha Goel, Donet Tom, Gaurav
Batra, Gautam Menghani, Hari Bathini, Kajol Jain, Kees Cook, Mahesh Salgaonkar,
Michael Ellerman, Paul Mackerras, Ritesh Harjani (IBM), Sathvika Vasireddy,
Segher Boessenkool, Sourabh Jain, Vaibhav Jain, Venkat Rao Bagalkote.
-----BEGIN PGP SIGNATURE-----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=GFcj
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:
- Remove support for IBM Cell Blades
- SMP support for microwatt platform
- Support for inline static calls on PPC32
- Enable pmu selftests for power11 platform
- Enable hardware trace macro (HTM) hcall support
- Support for limited address mode capability
- Changes to RMA size from 512 MB to 768 MB to handle fadump
- Misc fixes and cleanups
Thanks to Abhishek Dubey, Amit Machhiwal, Andreas Schwab, Arnd Bergmann,
Athira Rajeev, Avnish Chouhan, Christophe Leroy, Disha Goel, Donet Tom,
Gaurav Batra, Gautam Menghani, Hari Bathini, Kajol Jain, Kees Cook,
Mahesh Salgaonkar, Michael Ellerman, Paul Mackerras, Ritesh Harjani
(IBM), Sathvika Vasireddy, Segher Boessenkool, Sourabh Jain, Vaibhav
Jain, and Venkat Rao Bagalkote.
* tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (61 commits)
powerpc/kexec: fix physical address calculation in clear_utlb_entry()
crypto: powerpc: Mark ghashp8-ppc.o as an OBJECT_FILES_NON_STANDARD
powerpc: Fix 'intra_function_call not a direct call' warning
powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu'
KVM: PPC: Enable CAP_SPAPR_TCE_VFIO on pSeries KVM guests
powerpc/prom_init: Fixup missing #size-cells on PowerBook6,7
powerpc/microwatt: Add SMP support
powerpc: Define config option for processors with broadcast TLBIE
powerpc/microwatt: Define an idle power-save function
powerpc/microwatt: Device-tree updates
powerpc/microwatt: Select COMMON_CLK in order to get the clock framework
net: toshiba: Remove reference to PPC_IBM_CELL_BLADE
net: spider_net: Remove powerpc Cell driver
cpufreq: ppc_cbe: Remove powerpc Cell driver
genirq: Remove IRQ_EDGE_EOI_HANDLER
docs: Remove reference to removed CBE_CPUFREQ_SPU_GOVERNOR
powerpc: Remove UDBG_RTAS_CONSOLE
powerpc/io: Use standard barrier macros in io.c
powerpc/io: Rename _insw_ns() etc.
powerpc/io: Use generic raw accessors
...
Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr,
mpt3sas) and the removal of cxlflash. The only non-trivial core change
is an addition to unit attention handling to recognize UAs for power
on/reset and new media so the tape driver can use it.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCZ+RQ2yYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishe6DAQCdW/21
S1Y6BDlJLQfpWChGv6GIzanC+5sMfylw4d6ULgEA8upOE5L3fC29IY958jXig0o1
uLjxylwYEfVLDf8gwJ0=
=mkM+
-----END PGP SIGNATURE-----
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr,
mpt3sas) and the removal of cxlflash.
The only non-trivial core change is an addition to unit attention
handling to recognize UAs for power on/reset and new media so the tape
driver can use it"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (107 commits)
scsi: st: Tighten the page format heuristics with MODE SELECT
scsi: st: ERASE does not change tape location
scsi: st: Fix array overflow in st_setup()
scsi: target: tcm_loop: Fix wrong abort tag
scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag
scsi: hisi_sas: Fixed failure to issue vendor specific commands
scsi: fnic: Remove unnecessary NUL-terminations
scsi: fnic: Remove redundant flush_workqueue() calls
scsi: core: Use a switch statement when attaching VPD pages
scsi: ufs: renesas: Add initialization code for R-Car S4-8 ES1.2
scsi: ufs: renesas: Add reusable functions
scsi: ufs: renesas: Refactor 0x10ad/0x10af PHY settings
scsi: ufs: renesas: Remove register control helper function
scsi: ufs: renesas: Add register read to remove save/set/restore
scsi: ufs: renesas: Replace init data by init code
scsi: ufs: dt-bindings: renesas,ufs: Add calibration data
scsi: mpi3mr: Task Abort EH Support
scsi: storvsc: Don't report the host packet status as the hv status
scsi: isci: Make most module parameters static
scsi: megaraid_sas: Make most module parameters static
...
Remove the cxl driver that provides support for the IBM Coherent
Accelerator Processor Interface. Revert or clean up associated code in
arch/powerpc that is no longer necessary.
cxl has received minimal maintenance for several years, and is not
supported on the Power10 processor. We aren't aware of any users who are
likely to be using recent kernels.
Thanks to Mikey Neuling, Ian Munsie, Daniel Axtens, Frederic Barrat,
Christophe Lombard, Philippe Bergheaud, Vaibhav Jain and Alastair
D'Silva for their work on this driver over the years.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20250219070007.177725-2-ajd@linux.ibm.com
commit 5731d41af9 ("cxl: Deprecate driver") labelled the cxl driver as
deprecated and moved the ABI documentation to the obsolete/ subdirectory,
but didn't update cxl.rst, causing a warning once ff7ff6eb4f ("docs:
media: Allow creating cross-references for RC ABI") was merged.
Fix the cross-reference, and also add a deprecation warning.
Fixes: 5731d41af9 ("cxl: Deprecate driver")
Reported-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Acked-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250219064807.175107-1-ajd@linux.ibm.com
Add documentation to 'papr_hcalls.rst' describing the
input, output and return values of the H_HTM hcall as
per the internal specification.
Signed-off-by: Abhishek Dubey <adubey@linux.ibm.com>
Co-developed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Reviewed-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250113164039.302017-3-adubey@linux.ibm.com
Update the fadump document to include details about the fadump
additional parameter feature.
The document includes the following:
- Significance of the feature
- How to use it
- Feature restrictions
No functional changes are introduced.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250123114254.200527-5-sourabhjain@linux.ibm.com
Remove the cxlflash driver for IBM CAPI Flash devices.
The cxlflash driver has received minimal maintenance for some time, and
the CAPI Flash hardware that uses it is no longer commercially available.
Thanks to Uma Krishnan, Matthew Ochs and Manoj Kumar for their work on
this driver over the years.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Link: https://lore.kernel.org/r/20250203072801.365551-2-ajd@linux.ibm.com
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Correct spelling mistakes in the documentation to improve readability.
Signed-off-by: Amit Vadhavana <av2082000@gmail.com>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240817072724.6861-1-av2082000@gmail.com
Add support for using DPDES in the library for using guest state
buffers. DPDES support is needed for enabling usage of doorbells in a L2
KVM on PAPR guest.
Fixes: 6ccbbc33f0 ("KVM: PPC: Add helper library for Guest State Buffers")
Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: Gautam Menghani <gautam@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240605113913.83715-2-gautam@linux.ibm.com
Documents how to use the PR_PPC_GET_DEXCR and PR_PPC_SET_DEXCR prctl()'s
for changing a process's DEXCR or its process tree default value.
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240417112325.728010-10-bgray@linux.ibm.com
The patch titled ("powerpc: make fadump resilient with memory add/remove
events") has made significant changes to the implementation of fadump,
particularly on elfcorehdr creation and fadump crash info header
structure. Therefore, updating the fadump implementation documentation
to reflect those changes.
Following updates are done to firmware assisted dump documentation:
1. The elfcorehdr is no longer stored after fadump HDR in the reserved
dump area. Instead, the second kernel dynamically allocates memory
for the elfcorehdr within the address range from 0 to the boot memory
size. Therefore, update figures 1 and 2 of Memory Reservation during
the first and second kernels to reflect this change.
2. A version field has been added to the fadump header to manage the
future changes to fadump crash info header structure without changing
the fadump header magic number in the future. Therefore, remove the
corresponding TODO from the document.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240422195932.1583833-4-sourabhjain@linux.ibm.com
The kernel-feat directive passes its argument straight to the shell.
This is unfortunate and unnecessary.
Let's always use paths relative to $srctree/Documentation/ and use
subprocess.check_call() instead of subprocess.Popen(shell=True).
This also makes the code shorter.
This is analogous to commit 3231dd5862 ("docs: kernel_abi.py: fix
command injection") where we did exactly the same thing for
kernel_abi.py, somehow I completely missed this one.
Link: https://fosstodon.org/@jani/111676532203641247
Reported-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240110174758.3680506-1-vegard.nossum@oracle.com
- Add support for KVM running as a nested hypervisor under development versions
of PowerVM, using the new PAPR nested virtualisation API.
- Add support for the BPF prog pack allocator.
- A rework of the non-server MMU handling to support execute-only on all platforms.
- Some optimisations & cleanups for the powerpc qspinlock code.
- Various other small features and fixes.
Thanks to: Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin Gray,
Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam Menghani, Geert
Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley, Jordan Niethe, Julia
Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael Neuling, Minjie Du, Muhammad
Muzammil, Naveen N Rao, Nicholas Piggin, Nick Child, Nysal Jan K.A, Peter
Lafreniere, Rob Herring, Sachin Sant, Sebastian Andrzej Siewior, Shrikanth
Hegde, Srikar Dronamraju, Stanislav Kinsburskii, Vaibhav Jain, Wang Yufen, Yang
Yingliang, Yuan Tan.
-----BEGIN PGP SIGNATURE-----
iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmVEf38THG1wZUBlbGxl
cm1hbi5pZC5hdQAKCRBR6+o8yOGlgMKgD/4vmPVcBE31xCAuuksrVvmMDRsCoC8N
IJe4A5dHda1tYgdN2YdeK4LBszv5pWICjf2xZHlNh+L0s3Vxpngd4ycAWGPfDAyk
SOlM24NCKl5j3327QZEt+iZVmJeTSnrmjxO0A1y04yvzLrfvFT7mbP4EXoidjShd
GNb/EoH9kkCFn65zulc+lN2itQEX6Ht2GQTAz5z5GKtF6d1zZGM8ftOW+SQ5LeU3
5JOkQtMtwAKhzBiglA4BB3pQyjaOOkPaTaj/WLoxx5tbVaCkV4wrFq48Bmtbm7E3
kYkMNoI3IsC615GqY1CaRs/RSpMt74tIVh3tstSecHWRIwNGnfF6zeZpKLvJSs8k
Qa5greGWMUDuJdDg9oDwAX2AKtO+3byI2v1hKE+sMhMh0eeMtDP9WIrIRg4BDjKL
mq8RffXLTCtepehgfwBpoZbcvFSwFUMwuihBD7+bDMZQeDbtuFdZ2ouMFXBP9M1n
cuv4KySouvKv9Xp5EeCkHlpL7QmSqrtSHOPYjoPeLueJYlmjheWdreLM9p7Nl2ma
5wBxLpdLCGCpDJOyGgWNoQRHXucBNlU97DLx2V70nXG4wvvRyXh9EZ6I2niPSdPx
N3LJnINz4MJ52Gd1KWJvufOyJlLwXxuI07rzCq67ZegpEPh+baWqVcPscuKU8+q0
dSh2DPCht8gw1A==
=ddT4
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Add support for KVM running as a nested hypervisor under development
versions of PowerVM, using the new PAPR nested virtualisation API
- Add support for the BPF prog pack allocator
- A rework of the non-server MMU handling to support execute-only on
all platforms
- Some optimisations & cleanups for the powerpc qspinlock code
- Various other small features and fixes
Thanks to Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin
Gray, Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley,
Jordan Niethe, Julia Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael
Neuling, Minjie Du, Muhammad Muzammil, Naveen N Rao, Nicholas Piggin,
Nick Child, Nysal Jan K.A, Peter Lafreniere, Rob Herring, Sachin Sant,
Sebastian Andrzej Siewior, Shrikanth Hegde, Srikar Dronamraju, Stanislav
Kinsburskii, Vaibhav Jain, Wang Yufen, Yang Yingliang, and Yuan Tan.
* tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (100 commits)
powerpc/vmcore: Add MMU information to vmcoreinfo
Revert "powerpc: add `cur_cpu_spec` symbol to vmcoreinfo"
powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free]
powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data
powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack
powerpc/bpf: implement bpf_arch_text_copy
powerpc/code-patching: introduce patch_instructions()
powerpc/32s: Implement local_flush_tlb_page_psize()
powerpc/pseries: use kfree_sensitive() in plpks_gen_password()
powerpc/code-patching: Perform hwsync in __patch_instruction() in case of failure
powerpc/fsl_msi: Use device_get_match_data()
powerpc: Remove cpm_dp...() macros
powerpc/qspinlock: Rename yield_propagate_owner tunable
powerpc/qspinlock: Propagate sleepy if previous waiter is preempted
powerpc/qspinlock: don't propagate the not-sleepy state
powerpc/qspinlock: propagate owner preemptedness rather than CPU number
powerpc/qspinlock: stop queued waiters trying to set lock sleepy
powerpc/perf: Fix disabling BHRB and instruction sampling
powerpc/trace: Add support for HAVE_FUNCTION_ARG_ACCESS_API
powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh
...
and fix all in-tree references.
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.
Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230826165737.2101199-1-costa.shul@redhat.com