Commit Graph

1402712 Commits

Author SHA1 Message Date
Zong-Zhe Yang
44ec302e02 wifi: rtw89: ser: L1 skip polling status if FW runs event mode
Originally, polling FW status was required during recovering from L1.
Now, because newer FW support event mode, the polling can be skipped.
Add a FW feature flag and configure the supported chips.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251223030651.480633-7-pkshih@realtek.com
2025-12-26 10:56:12 +08:00
Zong-Zhe Yang
f4de946bdb wifi: rtw89: ser: enable error IMR after recovering from L1
After recovering from L1, explicitly enable error IMR to ensure next
L1 SER (system error recovery) can work normally.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251223030651.480633-6-pkshih@realtek.com
2025-12-26 10:54:55 +08:00
Ping-Ke Shih
b0f1289fd6 wifi: rtw89: mac: reset power state before switching to power on
To run power on function properly, reset power states (off/on/PS) to
initial state. Otherwise, it might be unusable due to fail to power on.

Since a USB adapter might play as USB mass storage with driver and then
switch to WiFi adapter, causing it stays on power-on state when doing WiFi
USB probe. Exclude this case.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251223030651.480633-5-pkshih@realtek.com
2025-12-26 10:53:18 +08:00
Kuan-Chung Chen
de1ba591d9 wifi: rtw89: mlo: fix incorrect link address in management frames
Deauth frames used wrong link address after switching from default link
to another, causing AP to reject subsequent auth frames. This affected
not only deauth but all management frames. Fixed by setting correct
mac_id to let header conversion references correct address CAM.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251223030651.480633-4-pkshih@realtek.com
2025-12-26 10:53:05 +08:00
Kuan-Chung Chen
fdbff29874 wifi: rtw89: mlo: fix missing TX null-data 1 during link switch
Fix missing null-data 1 when switching links. The FW should send a
null-data 1 to notify AP before disabling the old link. Adjust the
position of the H2C rtw89_fw_h2c_mlo_link_cfg to ensure proper FW
behavior during link transition.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251223030651.480633-3-pkshih@realtek.com
2025-12-26 10:52:54 +08:00
Kuan-Chung Chen
6b31738043 wifi: rtw89: 8852b: increase beacon loss to 6 seconds
Intermittent beacon loss from a specific AP can lead to
disconnections. Increasing the beacon loss threshold
helps stabilize the connection.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251223030651.480633-2-pkshih@realtek.com
2025-12-26 10:52:12 +08:00
Rohit Chourasia
af04c1e8e7 wifi: rtlwifi: fix typo 'received' in comment
Fix typo received -> received by review.

Signed-off-by: Rohit Chourasia <chourasiarohit27@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251211161911.30611-1-chourasiarohit27@gmail.com
2025-12-23 13:22:50 +08:00
Ping-Ke Shih
d3a9e132a4 wifi: rtw89: correct use sequence of driver_data in skb->info
As ieee80211_tx_info is used to assist filling TX descriptor, and layout of
IEEE80211_SKB_CB(skb)->driver_data (accessing by RTW89_TX_SKB_CB()) is
union, so driver_data must be used by/after rtw89_hci_tx_write() or just
before calling rtw89_hci_tx_write(). Otherwise, ieee80211_tx_info::control
data is overwritten.

Found this by using injected packets which uses ieee80211_tx_info::control,
but always sending incorrect data rate.

Cc: Fedor Pchelkin <pchelkin@ispras.ru>
Fixes: d5da3d9fb0 ("wifi: rtw89: process TX wait skbs for USB via C2H handler")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Tested-by: Fedor Pchelkin <pchelkin@ispras.ru>
Link: https://patch.msgid.link/20251217072646.43209-1-pkshih@realtek.com
2025-12-23 11:50:33 +08:00
Jan Gerber
a2f1fc9ab6 wifi: rtw89: 8852au: add support for TP TX30U Plus
the device shows up like this and everything seams to work:

Bus 004 Device 003: ID 3625:010d Realtek 802.11ax WLAN Adapter

Signed-off-by: Jan Gerber <j@mailb.org>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251212005515.2059533-1-j@mailb.org
2025-12-23 11:49:06 +08:00
Marco Crivellari
36f2deb2f5 wifi: rtw89: add WQ_PERCPU to alloc_workqueue users
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:

   commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
   commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")

The refactoring is going to alter the default behavior of
alloc_workqueue() to be unbound by default.

With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU. For more details see the Link tag below.

In order to keep alloc_workqueue() behavior identical, explicitly request
WQ_PERCPU.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251210101209.47176-1-marco.crivellari@suse.com
2025-12-23 11:45:02 +08:00
Jose Ignacio Tornos Martinez
41be33d3ef wifi: rtw89: 8922a: set random mac if efuse contains zeroes
I have some rtl8922ae devices with no permanent mac stored in efuse.

It could be properly saved and/or configured from user tools like
NetworkManager, but it would be desirable to be able to initialize it
somehow to get the device working by default.

So, in the same way as with other devices, if the mac address read from
efuse contains zeros, a random mac address is assigned to at least allow
operation, and the user is warned about this in case any action needs to
be considered.

Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251126091905.217951-1-jtornosm@redhat.com
2025-12-23 11:42:38 +08:00
Hsiu-Ming Chang
77653c327e wifi: rtw88: rtw8821cu: Add ID for Mercusys MU6H
Add support for Mercusys MU6H AC650 High Gain Wireless Dual Band USB
Adapter V1.30. It is based on RTL8811CU, usb device ID is 2c4e:0105.

Signed-off-by: Hsiu-Ming Chang <cges30901@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251205003245.5762-1-cges30901@gmail.com
2025-12-23 11:38:05 +08:00
Bitterblue Smith
44d1f624bb wifi: rtw88: 8822b: Avoid WARNING in rtw8822b_config_trx_mode()
rtw8822b_set_antenna() can be called from userspace when the chip is
powered off. In that case a WARNING is triggered in
rtw8822b_config_trx_mode() because trying to read the RF registers
when the chip is powered off returns an unexpected value.

Call rtw8822b_config_trx_mode() in rtw8822b_set_antenna() only when
the chip is powered on.

------------[ cut here ]------------
write RF mode table fail
WARNING: CPU: 0 PID: 7183 at rtw8822b.c:824 rtw8822b_config_trx_mode.constprop.0+0x835/0x840 [rtw88_8822b]
CPU: 0 UID: 0 PID: 7183 Comm: iw Tainted: G        W  OE       6.17.5-arch1-1 #1 PREEMPT(full)  01c39fc421df2af799dd5e9180b572af860b40c1
Tainted: [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: LENOVO 82KR/LNVNB161216, BIOS HBCN18WW 08/27/2021
RIP: 0010:rtw8822b_config_trx_mode.constprop.0+0x835/0x840 [rtw88_8822b]
Call Trace:
 <TASK>
 rtw8822b_set_antenna+0x57/0x70 [rtw88_8822b 370206f42e5890d8d5f48eb358b759efa37c422b]
 rtw_ops_set_antenna+0x50/0x80 [rtw88_core 711c8fb4f686162be4625b1d0b8e8c6a5ac850fb]
 ieee80211_set_antenna+0x60/0x100 [mac80211 f1845d85d2ecacf3b71867635a050ece90486cf3]
 nl80211_set_wiphy+0x384/0xe00 [cfg80211 296485ee85696d2150309a6d21a7fbca83d3dbda]
 ? netdev_run_todo+0x63/0x550
 genl_family_rcv_msg_doit+0xfc/0x160
 genl_rcv_msg+0x1aa/0x2b0
 ? __pfx_nl80211_pre_doit+0x10/0x10 [cfg80211 296485ee85696d2150309a6d21a7fbca83d3dbda]
 ? __pfx_nl80211_set_wiphy+0x10/0x10 [cfg80211 296485ee85696d2150309a6d21a7fbca83d3dbda]
 ? __pfx_nl80211_post_doit+0x10/0x10 [cfg80211 296485ee85696d2150309a6d21a7fbca83d3dbda]
 ? __pfx_genl_rcv_msg+0x10/0x10
 netlink_rcv_skb+0x59/0x110
 genl_rcv+0x28/0x40
 netlink_unicast+0x285/0x3c0
 ? __alloc_skb+0xdb/0x1a0
 netlink_sendmsg+0x20d/0x430
 ____sys_sendmsg+0x39f/0x3d0
 ? import_iovec+0x2f/0x40
 ___sys_sendmsg+0x99/0xe0
 ? refill_obj_stock+0x12e/0x240
 __sys_sendmsg+0x8a/0xf0
 do_syscall_64+0x81/0x970
 ? do_syscall_64+0x81/0x970
 ? ksys_read+0x73/0xf0
 ? do_syscall_64+0x81/0x970
 ? count_memcg_events+0xc2/0x190
 ? handle_mm_fault+0x1d7/0x2d0
 ? do_user_addr_fault+0x21a/0x690
 ? exc_page_fault+0x7e/0x1a0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
 </TASK>
---[ end trace 0000000000000000 ]---

Link: https://github.com/lwfinger/rtw88/issues/366
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/fb9a3444-9319-4aa2-8719-35a6308bf568@gmail.com
2025-12-23 11:32:48 +08:00
Roman Peshkichev
9f68fdcdc9 wifi: rtw88: fix DTIM period handling when conf->dtim_period is zero
The function rtw_set_dtim_period() accepted an 'int' dtim_period parameter,
while mac80211 provides dtim_period as 'u8' in struct ieee80211_bss_conf.
In IBSS (ad-hoc) mode mac80211 may set dtim_period to 0.

The driver unconditionally wrote (dtim_period - 1) to
REG_DTIM_COUNTER_ROOT, which resulted in 0xFF when dtim_period was 0. This
caused delays in broadcast/multicast traffic processing and issues with
ad-hoc operation.

Convert the function parameter to u8 to match ieee80211_bss_conf and avoid
the underflow by writing 0 when dtim_period is 0.

Link: https://github.com/lwfinger/rtw88/issues/406
Signed-off-by: Roman Peshkichev <roman.peshkichev@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251125180937.22977-1-roman.peshkichev@gmail.com
2025-12-23 11:26:07 +08:00
Linus Torvalds
8f7aa3d3c7 Networking changes for 6.19.
Core & protocols
 ----------------
 
  - Replace busylock at the Tx queuing layer with a lockless list. Resulting
    in a 300% (4x) improvement on heavy TX workloads, sending twice the
    number of packets per second, for half the cpu cycles.
 
  - Allow constantly busy flows to migrate to a more suitable CPU/NIC
    queue. Normally we perform queue re-selection when flow comes out
    of idle, but under extreme circumstances the flows may be constantly
    busy. Add sysctl to allow periodic rehashing even if it'd risk packet
    reordering.
 
  - Optimize the NAPI skb cache, make it larger, use it in more paths.
 
  - Attempt returning Tx skbs to the originating CPU (like we already did
    for Rx skbs).
 
  - Various data structure layout and prefetch optimizations from Eric.
 
  - Remove ktime_get() from the recvmsg() fast path, ktime_get() is sadly
    quite expensive on recent AMD machines.
 
  - Extend threaded NAPI polling to allow the kthread busy poll for packets.
 
  - Make MPTCP use Rx backlog processing. This lowers the lock pressure,
    improving the Rx performance.
 
  - Support memcg accounting of MPTCP socket memory.
 
  - Allow admin to opt sockets out of global protocol memory accounting
    (using a sysctl or BPF-based policy). The global limits are a poor fit
    for modern container workloads, where limits are imposed using cgroups.
 
  - Improve heuristics for when to kick off AF_UNIX garbage collection.
 
  - Allow users to control TCP SACK compression, and default to 33% of RTT.
 
  - Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid unnecessarily
    aggressive rcvbuf growth and overshot when the connection RTT is low.
 
  - Preserve skb metadata space across skb_push / skb_pull operations.
 
  - Support for IPIP encapsulation in the nftables flowtable offload.
 
  - Support appending IP interface information to ICMP messages (RFC 5837).
 
  - Support setting max record size in TLS (RFC 8449).
 
  - Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL.
 
  - Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock.
 
  - Let users configure the number of write buffers in SMC.
 
  - Add new struct sockaddr_unsized for sockaddr of unknown length,
    from Kees.
 
  - Some conversions away from the crypto_ahash API, from Eric Biggers.
 
  - Some preparations for slimming down struct page.
 
  - YAML Netlink protocol spec for WireGuard.
 
  - Add a tool on top of YAML Netlink specs/lib for reporting commonly
    computed derived statistics and summarized system state.
 
 Driver API
 ----------
 
  - Add CAN XL support to the CAN Netlink interface.
 
  - Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics,
    as defined by the OPEN Alliance's "Advanced diagnostic features
    for 100BASE-T1 automotive Ethernet PHYs" specification.
 
  - Add DPLL phase-adjust-gran pin attribute (and implement it in zl3073x).
 
  - Refactor xfrm_input lock to reduce contention when NIC offloads IPsec
    and performs RSS.
 
  - Add info to devlink params whether the current setting is the default
    or a user override. Allow resetting back to default.
 
  - Add standard device stats for PSP crypto offload.
 
  - Leverage DSA frame broadcast to implement simple HSR frame duplication
    for a lot of switches without dedicated HSR offload.
 
  - Add uAPI defines for 1.6Tbps link modes.
 
 Device drivers
 --------------
 
  - Add Motorcomm YT921x gigabit Ethernet switch support.
 
  - Add MUCSE driver for N500/N210 1GbE NIC series.
 
  - Convert drivers to support dedicated ops for timestamping control,
    and away from the direct IOCTL handling. While at it support GET
    operations for PHY timestamping.
 
  - Add (and convert most drivers to) a dedicated ethtool callback
    for reading the Rx ring count.
 
  - Significant refactoring efforts in the STMMAC driver, which supports
    Synopsys turn-key MAC IP integrated into a ton of SoCs.
 
  - Ethernet high-speed NICs:
    - Broadcom (bnxt):
      - support PPS in/out on all pins
    - Intel (100G, ice, idpf):
      - ice: implement standard ethtool and timestamping stats
      - i40e: support setting the max number of MAC addresses per VF
      - iavf: support RSS of GTP tunnels for 5G and LTE deployments
    - nVidia/Mellanox (mlx5):
      - reduce downtime on interface reconfiguration
      - disable being an XDP redirect target by default (same as other
        drivers) to avoid wasting resources if feature is unused
    - Meta (fbnic):
      - add support for Linux-managed PCS on 25G, 50G, and 100G links
    - Wangxun:
      - support Rx descriptor merge, and Tx head writeback
      - support Rx coalescing offload
      - support 25G SPF and 40G QSFP modules
 
  - Ethernet virtual:
    - Google (gve):
      - allow ethtool to configure rx_buf_len
      - implement XDP HW RX Timestamping support for DQ descriptor format
    - Microsoft vNIC (mana):
      - support HW link state events
      - handle hardware recovery events when probing the device
 
  - Ethernet NICs consumer, and embedded:
    - usbnet: add support for Byte Queue Limits (BQL)
    - AMD (amd-xgbe):
      - add device selftests
    - NXP (enetc):
      - add i.MX94 support
    - Broadcom integrated MACs (bcmgenet, bcmasp):
      - bcmasp: add support for PHY-based Wake-on-LAN
    - Broadcom switches (b53):
      - support port isolation
      - support BCM5389/97/98 and BCM63XX ARL formats
    - Lantiq/MaxLinear switches:
      - support bridge FDB entries on the CPU port
      - use regmap for register access
      - allow user to enable/disable learning
      - support Energy Efficient Ethernet
      - support configuring RMII clock delays
      - add tagging driver for MaxLinear GSW1xx switches
    - Synopsys (stmmac):
      - support using the HW clock in free running mode
      - add Eswin EIC7700 support
      - add Rockchip RK3506 support
      - add Altera Agilex5 support
    - Cadence (macb):
      - cleanup and consolidate descriptor and DMA address handling
      - add EyeQ5 support
    - TI:
      - icssg-prueth: support AF_XDP
    - Airoha access points:
      - add missing Ethernet stats and link state callback
      - add AN7583 support
      - support out-of-order Tx completion processing
    - Power over Ethernet:
      - pd692x0: preserve PSE configuration across reboots
      - add support for TPS23881B devices
 
  - Ethernet PHYs:
    - Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support
    - Support 50G SerDes and 100G interfaces in Linux-managed PHYs
    - micrel:
      - support for non PTP SKUs of lan8814
      - enable in-band auto-negotiation on lan8814
    - realtek:
      - cable testing support on RTL8224
      - interrupt support on RTL8221B
    - motorcomm: support for PHY LEDs on YT853
    - microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag
    - mscc: support for PHY LED control
 
  - CAN drivers:
    - m_can: add support for optional reset and system wake up
    - remove can_change_mtu() obsoleted by core handling
    - mcp251xfd: support GPIO controller functionality
 
  - Bluetooth:
    - add initial support for PASTa
 
  - WiFi:
    - split ieee80211.h file, it's way too big
    - improvements in VHT radiotap reporting, S1G, Channel Switch
      Announcement handling, rate tracking in mesh networks
    - improve multi-radio monitor mode support, and add a cfg80211 debugfs
      interface for it
    - HT action frame handling on 6 GHz
    - initial chanctx work towards NAN
    - MU-MIMO sniffer improvements
 
  - WiFi drivers:
    - RealTek (rtw89):
      - support USB devices RTL8852AU and RTL8852CU
      - initial work for RTL8922DE
      - improved injection support
    - Intel:
      - iwlwifi: new sniffer API support
    - MediaTek (mt76):
      - WED support for >32-bit DMA
      - airoha NPU support
      - regdomain improvements
      - continued WiFi7/MLO work
    - Qualcomm/Atheros:
      - ath10k: factory test support
      - ath11k: TX power insertion support
      - ath12k: BSS color change support
      - ath12k: statistics improvements
    - brcmfmac: Acer A1 840 tablet quirk
    - rtl8xxxu: 40 MHz connection fixes/support
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Replace busylock at the Tx queuing layer with a lockless list.

     Resulting in a 300% (4x) improvement on heavy TX workloads, sending
     twice the number of packets per second, for half the cpu cycles.

   - Allow constantly busy flows to migrate to a more suitable CPU/NIC
     queue.

     Normally we perform queue re-selection when flow comes out of idle,
     but under extreme circumstances the flows may be constantly busy.

     Add sysctl to allow periodic rehashing even if it'd risk packet
     reordering.

   - Optimize the NAPI skb cache, make it larger, use it in more paths.

   - Attempt returning Tx skbs to the originating CPU (like we already
     did for Rx skbs).

   - Various data structure layout and prefetch optimizations from Eric.

   - Remove ktime_get() from the recvmsg() fast path, ktime_get() is
     sadly quite expensive on recent AMD machines.

   - Extend threaded NAPI polling to allow the kthread busy poll for
     packets.

   - Make MPTCP use Rx backlog processing. This lowers the lock
     pressure, improving the Rx performance.

   - Support memcg accounting of MPTCP socket memory.

   - Allow admin to opt sockets out of global protocol memory accounting
     (using a sysctl or BPF-based policy). The global limits are a poor
     fit for modern container workloads, where limits are imposed using
     cgroups.

   - Improve heuristics for when to kick off AF_UNIX garbage collection.

   - Allow users to control TCP SACK compression, and default to 33% of
     RTT.

   - Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid
     unnecessarily aggressive rcvbuf growth and overshot when the
     connection RTT is low.

   - Preserve skb metadata space across skb_push / skb_pull operations.

   - Support for IPIP encapsulation in the nftables flowtable offload.

   - Support appending IP interface information to ICMP messages (RFC
     5837).

   - Support setting max record size in TLS (RFC 8449).

   - Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL.

   - Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock.

   - Let users configure the number of write buffers in SMC.

   - Add new struct sockaddr_unsized for sockaddr of unknown length,
     from Kees.

   - Some conversions away from the crypto_ahash API, from Eric Biggers.

   - Some preparations for slimming down struct page.

   - YAML Netlink protocol spec for WireGuard.

   - Add a tool on top of YAML Netlink specs/lib for reporting commonly
     computed derived statistics and summarized system state.

  Driver API:

   - Add CAN XL support to the CAN Netlink interface.

   - Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics, as
     defined by the OPEN Alliance's "Advanced diagnostic features for
     100BASE-T1 automotive Ethernet PHYs" specification.

   - Add DPLL phase-adjust-gran pin attribute (and implement it in
     zl3073x).

   - Refactor xfrm_input lock to reduce contention when NIC offloads
     IPsec and performs RSS.

   - Add info to devlink params whether the current setting is the
     default or a user override. Allow resetting back to default.

   - Add standard device stats for PSP crypto offload.

   - Leverage DSA frame broadcast to implement simple HSR frame
     duplication for a lot of switches without dedicated HSR offload.

   - Add uAPI defines for 1.6Tbps link modes.

  Device drivers:

   - Add Motorcomm YT921x gigabit Ethernet switch support.

   - Add MUCSE driver for N500/N210 1GbE NIC series.

   - Convert drivers to support dedicated ops for timestamping control,
     and away from the direct IOCTL handling. While at it support GET
     operations for PHY timestamping.

   - Add (and convert most drivers to) a dedicated ethtool callback for
     reading the Rx ring count.

   - Significant refactoring efforts in the STMMAC driver, which
     supports Synopsys turn-key MAC IP integrated into a ton of SoCs.

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support PPS in/out on all pins
      - Intel (100G, ice, idpf):
         - ice: implement standard ethtool and timestamping stats
         - i40e: support setting the max number of MAC addresses per VF
         - iavf: support RSS of GTP tunnels for 5G and LTE deployments
      - nVidia/Mellanox (mlx5):
         - reduce downtime on interface reconfiguration
         - disable being an XDP redirect target by default (same as
           other drivers) to avoid wasting resources if feature is
           unused
      - Meta (fbnic):
         - add support for Linux-managed PCS on 25G, 50G, and 100G links
      - Wangxun:
         - support Rx descriptor merge, and Tx head writeback
         - support Rx coalescing offload
         - support 25G SPF and 40G QSFP modules

   - Ethernet virtual:
      - Google (gve):
         - allow ethtool to configure rx_buf_len
         - implement XDP HW RX Timestamping support for DQ descriptor
           format
      - Microsoft vNIC (mana):
         - support HW link state events
         - handle hardware recovery events when probing the device

   - Ethernet NICs consumer, and embedded:
      - usbnet: add support for Byte Queue Limits (BQL)
      - AMD (amd-xgbe):
         - add device selftests
      - NXP (enetc):
         - add i.MX94 support
      - Broadcom integrated MACs (bcmgenet, bcmasp):
         - bcmasp: add support for PHY-based Wake-on-LAN
      - Broadcom switches (b53):
         - support port isolation
         - support BCM5389/97/98 and BCM63XX ARL formats
      - Lantiq/MaxLinear switches:
         - support bridge FDB entries on the CPU port
         - use regmap for register access
         - allow user to enable/disable learning
         - support Energy Efficient Ethernet
         - support configuring RMII clock delays
         - add tagging driver for MaxLinear GSW1xx switches
      - Synopsys (stmmac):
         - support using the HW clock in free running mode
         - add Eswin EIC7700 support
         - add Rockchip RK3506 support
         - add Altera Agilex5 support
      - Cadence (macb):
         - cleanup and consolidate descriptor and DMA address handling
         - add EyeQ5 support
      - TI:
         - icssg-prueth: support AF_XDP
      - Airoha access points:
         - add missing Ethernet stats and link state callback
         - add AN7583 support
         - support out-of-order Tx completion processing
      - Power over Ethernet:
         - pd692x0: preserve PSE configuration across reboots
         - add support for TPS23881B devices

   - Ethernet PHYs:
      - Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support
      - Support 50G SerDes and 100G interfaces in Linux-managed PHYs
      - micrel:
         - support for non PTP SKUs of lan8814
         - enable in-band auto-negotiation on lan8814
      - realtek:
         - cable testing support on RTL8224
         - interrupt support on RTL8221B
      - motorcomm: support for PHY LEDs on YT853
      - microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag
      - mscc: support for PHY LED control

   - CAN drivers:
      - m_can: add support for optional reset and system wake up
      - remove can_change_mtu() obsoleted by core handling
      - mcp251xfd: support GPIO controller functionality

   - Bluetooth:
      - add initial support for PASTa

   - WiFi:
      - split ieee80211.h file, it's way too big
      - improvements in VHT radiotap reporting, S1G, Channel Switch
        Announcement handling, rate tracking in mesh networks
      - improve multi-radio monitor mode support, and add a cfg80211
        debugfs interface for it
      - HT action frame handling on 6 GHz
      - initial chanctx work towards NAN
      - MU-MIMO sniffer improvements

   - WiFi drivers:
      - RealTek (rtw89):
         - support USB devices RTL8852AU and RTL8852CU
         - initial work for RTL8922DE
         - improved injection support
      - Intel:
         - iwlwifi: new sniffer API support
      - MediaTek (mt76):
         - WED support for >32-bit DMA
         - airoha NPU support
         - regdomain improvements
         - continued WiFi7/MLO work
      - Qualcomm/Atheros:
         - ath10k: factory test support
         - ath11k: TX power insertion support
         - ath12k: BSS color change support
         - ath12k: statistics improvements
      - brcmfmac: Acer A1 840 tablet quirk
      - rtl8xxxu: 40 MHz connection fixes/support"

* tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1381 commits)
  net: page_pool: sanitise allocation order
  net: page pool: xa init with destroy on pp init
  net/mlx5e: Support XDP target xmit with dummy program
  net/mlx5e: Update XDP features in switch channels
  selftests/tc-testing: Test CAKE scheduler when enqueue drops packets
  net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop
  wireguard: netlink: generate netlink code
  wireguard: uapi: generate header with ynl-gen
  wireguard: uapi: move flag enums
  wireguard: uapi: move enum wg_cmd
  wireguard: netlink: add YNL specification
  selftests: drv-net: Fix tolerance calculation in devlink_rate_tc_bw.py
  selftests: drv-net: Fix and clarify TC bandwidth split in devlink_rate_tc_bw.py
  selftests: drv-net: Set shell=True for sysfs writes in devlink_rate_tc_bw.py
  selftests: drv-net: Use Iperf3Runner in devlink_rate_tc_bw.py
  selftests: drv-net: introduce Iperf3Runner for measurement use cases
  selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS
  net: ps3_gelic_net: Use napi_alloc_skb() and napi_gro_receive()
  Documentation: net: dsa: mention simple HSR offload helpers
  Documentation: net: dsa: mention availability of RedBox
  ...
2025-12-03 17:24:33 -08:00
Linus Torvalds
015e7b0b0e bpf-next-6.19
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Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

 - Convert selftests/bpf/test_tc_edt and test_tc_tunnel from .sh to
   test_progs runner (Alexis Lothoré)

 - Convert selftests/bpf/test_xsk to test_progs runner (Bastien
   Curutchet)

 - Replace bpf memory allocator with kmalloc_nolock() in
   bpf_local_storage (Amery Hung), and in bpf streams and range tree
   (Puranjay Mohan)

 - Introduce support for indirect jumps in BPF verifier and x86 JIT
   (Anton Protopopov) and arm64 JIT (Puranjay Mohan)

 - Remove runqslower bpf tool (Hoyeon Lee)

 - Fix corner cases in the verifier to close several syzbot reports
   (Eduard Zingerman, KaFai Wan)

 - Several improvements in deadlock detection in rqspinlock (Kumar
   Kartikeya Dwivedi)

 - Implement "jmp" mode for BPF trampoline and corresponding
   DYNAMIC_FTRACE_WITH_JMP. It improves "fexit" program type performance
   from 80 M/s to 136 M/s. With Steven's Ack. (Menglong Dong)

 - Add ability to test non-linear skbs in BPF_PROG_TEST_RUN (Paul
   Chaignon)

 - Do not let BPF_PROG_TEST_RUN emit invalid GSO types to stack (Daniel
   Borkmann)

 - Generalize buildid reader into bpf_dynptr (Mykyta Yatsenko)

 - Optimize bpf_map_update_elem() for map-in-map types (Ritesh
   Oedayrajsingh Varma)

 - Introduce overwrite mode for BPF ring buffer (Xu Kuohai)

* tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (169 commits)
  bpf: optimize bpf_map_update_elem() for map-in-map types
  bpf: make kprobe_multi_link_prog_run always_inline
  selftests/bpf: do not hardcode target rate in test_tc_edt BPF program
  selftests/bpf: remove test_tc_edt.sh
  selftests/bpf: integrate test_tc_edt into test_progs
  selftests/bpf: rename test_tc_edt.bpf.c section to expose program type
  selftests/bpf: Add success stats to rqspinlock stress test
  rqspinlock: Precede non-head waiter queueing with AA check
  rqspinlock: Disable spinning for trylock fallback
  rqspinlock: Use trylock fallback when per-CPU rqnode is busy
  rqspinlock: Perform AA checks immediately
  rqspinlock: Enclose lock/unlock within lock entry acquisitions
  bpf: Remove runqslower tool
  selftests/bpf: Remove usage of lsm/file_alloc_security in selftest
  bpf: Disable file_alloc_security hook
  bpf: check for insn arrays in check_ptr_alignment
  bpf: force BPF_F_RDONLY_PROG on insn array creation
  bpf: Fix exclusive map memory leak
  selftests/bpf: Make CS length configurable for rqspinlock stress test
  selftests/bpf: Add lock wait time stats to rqspinlock stress test
  ...
2025-12-03 16:54:54 -08:00
Linus Torvalds
b6d993310a linux_kselftest-kunit-6.19-rc1
Makes filter parameters configurable via Kconfig.
 Adds description of kunit.enable parameter documentation.
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Merge tag 'linux_kselftest-kunit-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kunit updates from Shuah Khan:

 - Make filter parameters configurable via Kconfig

 - Add description of kunit.enable parameter to documentation

* tag 'linux_kselftest-kunit-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: Make filter parameters configurable via Kconfig
  Documentation: kunit: add description of kunit.enable parameter
2025-12-03 15:50:11 -08:00
Linus Torvalds
2488655b2f linux_kselftest-next-6.19-rc1
Adds basic test for trace_marker_raw file to tracing selftest.
 Fixes invalid array access in printf dma_map_benchmark selftest.
 Adds tprobe enable/disable testcase to tracing selftest.
 Updates fprobe selftest for ftrace based fprobe.
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Merge tag 'linux_kselftest-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:

 - Add basic test for trace_marker_raw file to tracing selftest

 - Fix invalid array access in printf dma_map_benchmark selftest

 - Add tprobe enable/disable testcase to tracing selftest

 - Update fprobe selftest for ftrace based fprobe

* tag 'linux_kselftest-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: tracing: Update fprobe selftest for ftrace based fprobe
  selftests: tracing: Add tprobe enable/disable testcase
  selftests/run_kselftest.sh: exit with error if tests fail
  selftests/dma: fix invalid array access in printf
  selftests/tracing: Add basic test for trace_marker_raw file
2025-12-03 15:08:18 -08:00
Linus Torvalds
2ddcf4962c Kbuild updates for v6.19
- Enable -fms-extensions, allowing anonymous use of tagged struct or
     union in struct/union (tag kbuild-ms-extensions-6.19).  An exemplary
     conversion patch is added here, too (btrfs).
 
   - Introduce architecture-specific CC_CAN_LINK and flags for userprogs
 
   - Add new packaging target 'modules-cpio-pkg' for building a initramfs
     cpio w/ kmods
 
   - Handle included .c files in gen_compile_commands
 
   - Minor kbuild changes:
     - Use objtree for module signing key path, fixing oot kmod signing
     - Improve documentation of KBUILD_BUILD_TIMESTAMP
     - Reuse KBUILD_USERCFLAGS for UAPI, instead of defining twice
     - Rename scripts/Makefile.extrawarn to Makefile.warn
     - Drop obsolete types.h check from headers_check.pl
     - Remove outdated config leak ignore entries
 
 Signed-off-by: Nicolas Schier <nsc@kernel.org>
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Merge tag 'kbuild-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild updates from Nicolas Schier:

  - Enable -fms-extensions, allowing anonymous use of tagged struct or
    union in struct/union (tag kbuild-ms-extensions-6.19). An exemplary
    conversion patch is added here, too (btrfs).

    [ Editor's note: the core of this actually came in early through a
      shared branch and a few other trees    - Linus ]

  - Introduce architecture-specific CC_CAN_LINK and flags for userprogs

  - Add new packaging target 'modules-cpio-pkg' for building a initramfs
    cpio w/ kmods

  - Handle included .c files in gen_compile_commands

  - Minor kbuild changes:
     - Use objtree for module signing key path, fixing oot kmod signing
     - Improve documentation of KBUILD_BUILD_TIMESTAMP
     - Reuse KBUILD_USERCFLAGS for UAPI, instead of defining twice
     - Rename scripts/Makefile.extrawarn to Makefile.warn
     - Drop obsolete types.h check from headers_check.pl
     - Remove outdated config leak ignore entries

* tag 'kbuild-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
  kbuild: add target to build a cpio containing modules
  initramfs: add gen_init_cpio to hostprogs unconditionally
  kbuild: allow architectures to override CC_CAN_LINK
  init: deduplicate cc-can-link.sh invocations
  kbuild: don't enable CC_CAN_LINK if the dummy program generates warnings
  scripts: headers_install.sh: Remove two outdated config leak ignore entries
  scripts/clang-tools: Handle included .c files in gen_compile_commands
  kbuild: uapi: Drop types.h check from headers_check.pl
  kbuild: Rename Makefile.extrawarn to Makefile.warn
  MAINTAINERS, .mailmap: Update mail address for Nicolas Schier
  kbuild: uapi: reuse KBUILD_USERCFLAGS
  kbuild: doc: improve KBUILD_BUILD_TIMESTAMP documentation
  kbuild: Use objtree for module signing key path
  btrfs: send: make use of -fms-extensions for defining struct fs_path
2025-12-03 14:42:21 -08:00
Linus Torvalds
784faa8eca Rust changes for v6.19
Toolchain and infrastructure:
 
  - Add support for 'syn'.
 
      Syn is a parsing library for parsing a stream of Rust tokens into a
      syntax tree of Rust source code.
 
      Currently this library is geared toward use in Rust procedural
      macros, but contains some APIs that may be useful more generally.
 
    'syn' allows us to greatly simplify writing complex macros such as
    'pin-init' (Benno has already prepared the 'syn'-based version). We
    will use it in the 'macros' crate too.
 
    'syn' is the most downloaded Rust crate (according to crates.io), and
    it is also used by the Rust compiler itself. While the amount of code
    is substantial, there should not be many updates needed for these
    crates, and even if there are, they should not be too big, e.g. +7k
    -3k lines across the 3 crates in the last year.
 
    'syn' requires two smaller dependencies: 'quote' and 'proc-macro2'.
    I only modified their code to remove a third dependency
    ('unicode-ident') and to add the SPDX identifiers. The code can be
    easily verified to exactly match upstream with the provided scripts.
 
    They are all licensed under "Apache-2.0 OR MIT", like the other
    vendored 'alloc' crate we had for a while.
 
    Please see the merge commit with the cover letter for more context.
 
  - Allow 'unreachable_pub' and 'clippy::disallowed_names' for doctests.
 
    Examples (i.e. doctests) may want to do things like show public items
    and use names such as 'foo'.
 
    Nevertheless, we still try to keep examples as close to real code as
    possible (this is part of why running Clippy on doctests is important
    for us, e.g. for safety comments, which userspace Rust does not
    support yet but we are stricter).
 
 'kernel' crate:
 
  - Replace our custom 'CStr' type with 'core::ffi::CStr'.
 
    Using the standard library type reduces our custom code footprint,
    and we retain needed custom functionality through an extension trait
    and a new 'fmt!' macro which replaces the previous 'core' import.
 
    This started in 6.17 and continued in 6.18, and we finally land the
    replacement now. This required quite some stamina from Tamir, who
    split the changes in steps to prepare for the flag day change here.
 
  - Replace 'kernel::c_str!' with C string literals.
 
    C string literals were added in Rust 1.77, which produce '&CStr's
    (the 'core' one), so now we can write:
 
        c"hi"
 
    instead of:
 
        c_str!("hi")
 
  - Add 'num' module for numerical features.
 
    It includes the 'Integer' trait, implemented for all primitive
    integer types.
 
    It also includes the 'Bounded' integer wrapping type: an integer
    value that requires only the 'N' less significant bits of the wrapped
    type to be encoded:
 
        // An unsigned 8-bit integer, of which only the 4 LSBs are used.
        let v = Bounded::<u8, 4>:🆕:<15>();
        assert_eq!(v.get(), 15);
 
    'Bounded' is useful to e.g. enforce guarantees when working with
    bitfields that have an arbitrary number of bits.
 
    Values can be constructed from simple non-constant expressions or,
    for more complex ones, validated at runtime.
 
    'Bounded' also comes with comparison and arithmetic operations (with
    both their backing type and other 'Bounded's with a compatible
    backing type), casts to change the backing type, extending/shrinking
    and infallible/fallible conversions from/to primitives as applicable.
 
  - 'rbtree' module: add immutable cursor ('Cursor').
 
    It enables to use just an immutable tree reference where appropriate.
    The existing fully-featured mutable cursor is renamed to 'CursorMut'.
 
 kallsyms:
 
  - Fix wrong "big" kernel symbol type read from procfs.
 
 'pin-init' crate:
 
  - A couple minor fixes (Benno asked me to pick these patches up for
    him this cycle).
 
 Documentation:
 
  - Quick Start guide: add Debian 13 (Trixie).
 
    Debian Stable is now able to build Linux, since Debian 13 (released
    2025-08-09) packages Rust 1.85.0, which is recent enough.
 
    We are planning to propose that the minimum supported Rust version in
    Linux follows Debian Stable releases, with Debian 13 being the first
    one we upgrade to, i.e. Rust 1.85.
 
 MAINTAINERS:
 
  - Add entry for the new 'num' module.
 
  - Remove Alex as Rust maintainer: he hasn't had the time to contribute
    for a few years now, so it is a no-op change in practice.
 
 And a few other cleanups and improvements.
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Merge tag 'rust-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Pull Rust updates from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Add support for 'syn'.

     Syn is a parsing library for parsing a stream of Rust tokens into a
     syntax tree of Rust source code.

     Currently this library is geared toward use in Rust procedural
     macros, but contains some APIs that may be useful more generally.

     'syn' allows us to greatly simplify writing complex macros such as
     'pin-init' (Benno has already prepared the 'syn'-based version). We
     will use it in the 'macros' crate too.

     'syn' is the most downloaded Rust crate (according to crates.io),
     and it is also used by the Rust compiler itself. While the amount
     of code is substantial, there should not be many updates needed for
     these crates, and even if there are, they should not be too big,
     e.g. +7k -3k lines across the 3 crates in the last year.

     'syn' requires two smaller dependencies: 'quote' and 'proc-macro2'.
     I only modified their code to remove a third dependency
     ('unicode-ident') and to add the SPDX identifiers. The code can be
     easily verified to exactly match upstream with the provided
     scripts.

     They are all licensed under "Apache-2.0 OR MIT", like the other
     vendored 'alloc' crate we had for a while.

     Please see the merge commit with the cover letter for more context.

   - Allow 'unreachable_pub' and 'clippy::disallowed_names' for
     doctests.

     Examples (i.e. doctests) may want to do things like show public
     items and use names such as 'foo'.

     Nevertheless, we still try to keep examples as close to real code
     as possible (this is part of why running Clippy on doctests is
     important for us, e.g. for safety comments, which userspace Rust
     does not support yet but we are stricter).

  'kernel' crate:

   - Replace our custom 'CStr' type with 'core::ffi::CStr'.

     Using the standard library type reduces our custom code footprint,
     and we retain needed custom functionality through an extension
     trait and a new 'fmt!' macro which replaces the previous 'core'
     import.

     This started in 6.17 and continued in 6.18, and we finally land the
     replacement now. This required quite some stamina from Tamir, who
     split the changes in steps to prepare for the flag day change here.

   - Replace 'kernel::c_str!' with C string literals.

     C string literals were added in Rust 1.77, which produce '&CStr's
     (the 'core' one), so now we can write:

         c"hi"

     instead of:

         c_str!("hi")

   - Add 'num' module for numerical features.

     It includes the 'Integer' trait, implemented for all primitive
     integer types.

     It also includes the 'Bounded' integer wrapping type: an integer
     value that requires only the 'N' least significant bits of the
     wrapped type to be encoded:

         // An unsigned 8-bit integer, of which only the 4 LSBs are used.
         let v = Bounded::<u8, 4>:🆕:<15>();
         assert_eq!(v.get(), 15);

     'Bounded' is useful to e.g. enforce guarantees when working with
     bitfields that have an arbitrary number of bits.

     Values can also be constructed from simple non-constant expressions
     or, for more complex ones, validated at runtime.

     'Bounded' also comes with comparison and arithmetic operations
     (with both their backing type and other 'Bounded's with a
     compatible backing type), casts to change the backing type,
     extending/shrinking and infallible/fallible conversions from/to
     primitives as applicable.

   - 'rbtree' module: add immutable cursor ('Cursor').

     It enables to use just an immutable tree reference where
     appropriate. The existing fully-featured mutable cursor is renamed
     to 'CursorMut'.

  kallsyms:

   - Fix wrong "big" kernel symbol type read from procfs.

  'pin-init' crate:

   - A couple minor fixes (Benno asked me to pick these patches up for
     him this cycle).

  Documentation:

   - Quick Start guide: add Debian 13 (Trixie).

     Debian Stable is now able to build Linux, since Debian 13 (released
     2025-08-09) packages Rust 1.85.0, which is recent enough.

     We are planning to propose that the minimum supported Rust version
     in Linux follows Debian Stable releases, with Debian 13 being the
     first one we upgrade to, i.e. Rust 1.85.

  MAINTAINERS:

   - Add entry for the new 'num' module.

   - Remove Alex as Rust maintainer: he hasn't had the time to
     contribute for a few years now, so it is a no-op change in
     practice.

  And a few other cleanups and improvements"

* tag 'rust-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (53 commits)
  rust: macros: support `proc-macro2`, `quote` and `syn`
  rust: syn: enable support in kbuild
  rust: syn: add `README.md`
  rust: syn: remove `unicode-ident` dependency
  rust: syn: add SPDX License Identifiers
  rust: syn: import crate
  rust: quote: enable support in kbuild
  rust: quote: add `README.md`
  rust: quote: add SPDX License Identifiers
  rust: quote: import crate
  rust: proc-macro2: enable support in kbuild
  rust: proc-macro2: add `README.md`
  rust: proc-macro2: remove `unicode_ident` dependency
  rust: proc-macro2: add SPDX License Identifiers
  rust: proc-macro2: import crate
  rust: kbuild: support using libraries in `rustc_procmacro`
  rust: kbuild: support skipping flags in `rustc_test_library`
  rust: kbuild: add proc macro library support
  rust: kbuild: simplify `--cfg` handling
  rust: kbuild: introduce `core-flags` and `core-skip_flags`
  ...
2025-12-03 14:16:49 -08:00
Linus Torvalds
51ab33fc0a livepatching changes for 6.19
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Merge tag 'livepatching-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching updates from Petr Mladek:

 - Support both paths where tracefs is typically mounted in selftests

 - Make old_sympos 0 and 1 equal. They both are valid when there is only
   one symbol with the given name.

* tag 'livepatching-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  selftests: livepatch: use canonical ftrace path
  livepatch: Match old_sympos 0 and 1 in klp_find_func()
2025-12-03 13:46:48 -08:00
Linus Torvalds
02baaa67d9 sched_ext: Changes for v6.19
- Improve recovery from misbehaving BPF schedulers. When a scheduler puts many
   tasks with varying affinity restrictions on a shared DSQ, CPUs scanning
   through tasks they cannot run can overwhelm the system, causing lockups.
   Bypass mode now uses per-CPU DSQs with a load balancer to avoid this, and
   hooks into the hardlockup detector to attempt recovery. Add scx_cpu0 example
   scheduler to demonstrate this scenario.
 
 - Add lockless peek operation for DSQs to reduce lock contention for schedulers
   that need to query queue state during load balancing.
 
 - Allow scx_bpf_reenqueue_local() to be called from anywhere in preparation for
   deprecating cpu_acquire/release() callbacks in favor of generic BPF hooks.
 
 - Prepare for hierarchical scheduler support: add scx_bpf_task_set_slice() and
   scx_bpf_task_set_dsq_vtime() kfuncs, make scx_bpf_dsq_insert*() return bool,
   and wrap kfunc args in structs for future aux__prog parameter.
 
 - Implement cgroup_set_idle() callback to notify BPF schedulers when a cgroup's
   idle state changes.
 
 - Fix migration tasks being incorrectly downgraded from stop_sched_class to
   rt_sched_class across sched_ext enable/disable. Applied late as the fix is
   low risk and the bug subtle but needs stable backporting.
 
 - Various fixes and cleanups including cgroup exit ordering, SCX_KICK_WAIT
   reliability, and backward compatibility improvements.
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Merge tag 'sched_ext-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext updates from Tejun Heo:

 - Improve recovery from misbehaving BPF schedulers.

   When a scheduler puts many tasks with varying affinity restrictions
   on a shared DSQ, CPUs scanning through tasks they cannot run can
   overwhelm the system, causing lockups.

   Bypass mode now uses per-CPU DSQs with a load balancer to avoid this,
   and hooks into the hardlockup detector to attempt recovery.

   Add scx_cpu0 example scheduler to demonstrate this scenario.

 - Add lockless peek operation for DSQs to reduce lock contention for
   schedulers that need to query queue state during load balancing.

 - Allow scx_bpf_reenqueue_local() to be called from anywhere in
   preparation for deprecating cpu_acquire/release() callbacks in favor
   of generic BPF hooks.

 - Prepare for hierarchical scheduler support: add
   scx_bpf_task_set_slice() and scx_bpf_task_set_dsq_vtime() kfuncs,
   make scx_bpf_dsq_insert*() return bool, and wrap kfunc args in
   structs for future aux__prog parameter.

 - Implement cgroup_set_idle() callback to notify BPF schedulers when a
   cgroup's idle state changes.

 - Fix migration tasks being incorrectly downgraded from
   stop_sched_class to rt_sched_class across sched_ext enable/disable.
   Applied late as the fix is low risk and the bug subtle but needs
   stable backporting.

 - Various fixes and cleanups including cgroup exit ordering,
   SCX_KICK_WAIT reliability, and backward compatibility improvements.

* tag 'sched_ext-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (44 commits)
  sched_ext: Fix incorrect sched_class settings for per-cpu migration tasks
  sched_ext: tools: Removing duplicate targets during non-cross compilation
  sched_ext: Use kvfree_rcu() to release per-cpu ksyncs object
  sched_ext: Pass locked CPU parameter to scx_hardlockup() and add docs
  sched_ext: Update comments replacing breather with aborting mechanism
  sched_ext: Implement load balancer for bypass mode
  sched_ext: Factor out abbreviated dispatch dequeue into dispatch_dequeue_locked()
  sched_ext: Factor out scx_dsq_list_node cursor initialization into INIT_DSQ_LIST_CURSOR
  sched_ext: Add scx_cpu0 example scheduler
  sched_ext: Hook up hardlockup detector
  sched_ext: Make handle_lockup() propagate scx_verror() result
  sched_ext: Refactor lockup handlers into handle_lockup()
  sched_ext: Make scx_exit() and scx_vexit() return bool
  sched_ext: Exit dispatch and move operations immediately when aborting
  sched_ext: Simplify breather mechanism with scx_aborting flag
  sched_ext: Use per-CPU DSQs instead of per-node global DSQs in bypass mode
  sched_ext: Refactor do_enqueue_task() local and global DSQ paths
  sched_ext: Use shorter slice in bypass mode
  sched_ext: Mark racy bitfields to prevent adding fields that can't tolerate races
  sched_ext: Minor cleanups to scx_task_iter
  ...
2025-12-03 13:25:39 -08:00
Linus Torvalds
8449d3252c cgroup: Changes for v6.19
- Defer task cgroup unlink until after the dying task's final context switch
   so that controllers see the cgroup properly populated until the task is
   truly gone.
 
 - cpuset cleanups and simplifications. Enforce that domain isolated CPUs
   stay in root or isolated partitions and fail if isolated+nohz_full would
   leave no housekeeping CPU. Fix sched/deadline root domain handling during
   CPU hot-unplug and race for tasks in attaching cpusets.
 
 - Misc fixes including memory reclaim protection documentation and selftest
   KTAP conformance.
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Merge tag 'cgroup-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:

 - Defer task cgroup unlink until after the dying task's final context
   switch so that controllers see the cgroup properly populated until
   the task is truly gone

 - cpuset cleanups and simplifications.

   Enforce that domain isolated CPUs stay in root or isolated partitions
   and fail if isolated+nohz_full would leave no housekeeping CPU. Fix
   sched/deadline root domain handling during CPU hot-unplug and race
   for tasks in attaching cpusets

 - Misc fixes including memory reclaim protection documentation and
   selftest KTAP conformance

* tag 'cgroup-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits)
  cpuset: Treat cpusets in attaching as populated
  sched/deadline: Walk up cpuset hierarchy to decide root domain when hot-unplug
  cgroup/cpuset: Introduce cpuset_cpus_allowed_locked()
  docs: cgroup: No special handling of unpopulated memcgs
  docs: cgroup: Note about sibling relative reclaim protection
  docs: cgroup: Explain reclaim protection target
  selftests/cgroup: conform test to KTAP format output
  cpuset: remove need_rebuild_sched_domains
  cpuset: remove global remote_children list
  cpuset: simplify node setting on error
  cgroup: include missing header for struct irq_work
  cgroup: Fix sleeping from invalid context warning on PREEMPT_RT
  cgroup/cpuset: Globally track isolated_cpus update
  cgroup/cpuset: Ensure domain isolated CPUs stay in root or isolated partition
  cgroup/cpuset: Move up prstate_housekeeping_conflict() helper
  cgroup/cpuset: Fail if isolated and nohz_full don't leave any housekeeping
  cgroup/cpuset: Rename update_unbound_workqueue_cpumask() to update_isolation_cpumasks()
  cgroup: Defer task cgroup unlink until after the task is done switching out
  cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free()
  cgroup: Rename cgroup lifecycle hooks to cgroup_task_*()
  ...
2025-12-03 13:04:07 -08:00
Linus Torvalds
2b60145734 workqueue: Changes for v6.19
- Rescuer affinity management: Affinity now updated only when detached using
   wq_unbound_cpumask consistently. DISASSOCIATED workers also follow unbound
   cpumask changes to avoid breaking CPU isolation.
 
 - Rescuer cleanups preparing for fetching work items one by one from pool list:
   Work assignment factored out, optimized to skip pwqs no longer needing
   rescue, and shutdown logic simplified.
 
 - Unused assert_rcu_or_wq_mutex_or_pool_mutex() removed.
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Merge tag 'wq-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue updates from Tejun Heo:

 - Rescuer affinity management: Affinity is now updated only when
   detached using wq_unbound_cpumask consistently. DISASSOCIATED workers
   also follow unbound cpumask changes to avoid breaking CPU isolation

 - Rescuer cleanups preparing for fetching work items one by one from
   pool list: Work assignment factored out, optimized to skip pwqs no
   longer needing rescue, and shutdown logic simplified

 - Unused assert_rcu_or_wq_mutex_or_pool_mutex() removed

* tag 'wq-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Don't rely on wq->rescuer to stop rescuer
  workqueue: Only assign rescuer work when really needed
  workqueue: Factor out assign_rescuer_work()
  workqueue: Init rescuer's affinities as wq_unbound_cpumask
  workqueue: Let DISASSOCIATED workers follow unbound wq cpumask changes
  workqueue: Update the rescuer's affinity only when it is detached
  workqueue: Remove unused assert_rcu_or_wq_mutex_or_pool_mutex
2025-12-03 12:50:10 -08:00
Linus Torvalds
4d38b88fd1 printk changes for 6.19
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Merge tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk updates from Petr Mladek:

 - Allow creaing nbcon console drivers with an unsafe write_atomic()
   callback that can only be called by the final nbcon_atomic_flush_unsafe().
   Otherwise, the driver would rely on the kthread.

   It is going to be used as the-best-effort approach for an
   experimental nbcon netconsole driver, see

     https://lore.kernel.org/r/20251121-nbcon-v1-2-503d17b2b4af@debian.org

   Note that a safe .write_atomic() callback is supposed to work in NMI
   context. But some networking drivers are not safe even in IRQ
   context:

     https://lore.kernel.org/r/oc46gdpmmlly5o44obvmoatfqo5bhpgv7pabpvb6sjuqioymcg@gjsma3ghoz35

   In an ideal world, all networking drivers would be fixed first and
   the atomic flush would be blocked only in NMI context. But it brings
   the question how reliable networking drivers are when the system is
   in a bad state. They might block flushing more reliable serial
   consoles which are more suitable for serious debugging anyway.

 - Allow to use the last 4 bytes of the printk ring buffer.

 - Prevent queuing IRQ work and block printk kthreads when consoles are
   suspended. Otherwise, they create non-necessary churn or even block
   the suspend.

 - Release console_lock() between each record in the kthread used for
   legacy consoles on RT. It might significantly speed up the boot.

 - Release nbcon context between each record in the atomic flush. It
   prevents stalls of the related printk kthread after it has lost the
   ownership in the middle of a record

 - Add support for NBCON consoles into KDB

 - Add %ptsP modifier for printing struct timespec64 and use it where
   possible

 - Misc code clean up

* tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (48 commits)
  printk: Use console_is_usable on console_unblank
  arch: um: kmsg_dump: Use console_is_usable
  drivers: serial: kgdboc: Drop checks for CON_ENABLED and CON_BOOT
  lib/vsprintf: Unify FORMAT_STATE_NUM handlers
  printk: Avoid irq_work for printk_deferred() on suspend
  printk: Avoid scheduling irq_work on suspend
  printk: Allow printk_trigger_flush() to flush all types
  tracing: Switch to use %ptSp
  scsi: snic: Switch to use %ptSp
  scsi: fnic: Switch to use %ptSp
  s390/dasd: Switch to use %ptSp
  ptp: ocp: Switch to use %ptSp
  pps: Switch to use %ptSp
  PCI: epf-test: Switch to use %ptSp
  net: dsa: sja1105: Switch to use %ptSp
  mmc: mmc_test: Switch to use %ptSp
  media: av7110: Switch to use %ptSp
  ipmi: Switch to use %ptSp
  igb: Switch to use %ptSp
  e1000e: Switch to use %ptSp
  ...
2025-12-03 12:42:36 -08:00
Linus Torvalds
4a4e019937 lkmm: Update documentation
Changes
 -------
 
 * Sort the memory-barriers.txt file's wait_event* and wait_on_bit*
   list alphabetically.
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Merge tag 'lkmm.2025.12.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull lkmm documentation update from Paul McKenney:

 - Sort the memory-barriers.txt file's wait_event* and wait_on_bit* list
   alphabetically

* tag 'lkmm.2025.12.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  memory-barriers.txt: Sort wait_event* and wait_on_bit* list alphabetically
2025-12-03 12:41:00 -08:00
Linus Torvalds
98e7dcbb82 RCU pull request for v6.19
SRCU
 ----
 
 _ Properly handle SRCU readers within IRQ disabled sections in tiny SRCU
 
 - Preparation to reimplement RCU Tasks Trace on top of SRCU fast:
 
     - Introduce API to expedite a grace period and test it through
       rcutorture.
 
     - Split srcu-fast in two flavours: SRCU-fast and SRCU-fast-updown.
       Both are still targeted toward faster readers (without full
       barriers on LOCK and UNLOCK) at the expense of heavier write side
       (using full RCU grace period ordering instead of simply full
       ordering) as compared to "traditional" non-fast SRCU. But those
       srcu-fast flavours are going to be optimized in two different
       ways:
 
          - SRCU-fast will become the reimplementation basis for
            RCU-TASK-TRACE for consolidation. Since RCU-TASK-TRACE must
            be NMI safe, SRCU-fast must be as well.
 
          - SRCU-fast-updown will be needed for uretprobes code in order
            to get rid of the read-side memory barriers while still
            allowing entering the reader at task level while exiting it
            in a timer handler. It is considered semaphore-like in that
            it can have different owners between LOCK and UNLOCK.
            However it is not NMI-safe.
 
       The actual optimizations are work in progress for the next cycle.
       Only the new interfaces are added for now, along with related
       torture and scalability test code.
 
 - Create/document/debug/torture new proper initializers for RCU fast:
   DEFINE_SRCU_FAST() and init_srcu_struct_fast()
 
   This allows for using right away the proper ordering on the write
   side (either full ordering or full RCU grace period ordering) without
   waiting for the read side to tell which to use. Also this optimizes
   the read side altogether with moving flavour debug checks under debug
   config and with removing a costly RmW operation on their first call.
 
 - Make some diagnostic functions tracing safe.
 
 REFSCALE
 -------
 
 Add performance testing for common context synchronizations
 (Preemption, IRQ, Softirq) and per-cpu increments. Those are
 relevant comparisons against SRCU-fast read side APIs, especially
 as they are planned to synchronize further tracing fast-path code.
 
 MISCELLANOUS
 ------
 
 - In order to prepare the layout for nohz_full work deferral to
   user exit, the context tracking state must shrink the counter
   of transitions to/from RCU not watching. The only possible hazard
   is to trigger wrap-around more easily, delaying a bit grace periods
   when that happens. This should be a rare event though. Yet add
   debugging and torture code to test that assumption.
 
 - Fix memory leak on locktorture module
 
 - Annotate accesses in rculist_nulls.h to prevent from KCSAN warnings.
   On recent discussions, we also concluded that all those WRITE_ONCE()
   and READ_ONCE() on list APIs deserve appropriate comments. Something
   to be expected for the next cycle.
 
 - Provide a script to apply several configs to several commits with torture.
 
 - Allow torture to reuse a build directory in order to save needless
   rebuild time.
 
 - Various cleanups.
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Merge tag 'rcu.release.v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU updates from Frederic Weisbecker:
 "SRCU:

   - Properly handle SRCU readers within IRQ disabled sections in tiny
     SRCU

   - Preparation to reimplement RCU Tasks Trace on top of SRCU fast:

      - Introduce API to expedite a grace period and test it through
        rcutorture

      - Split srcu-fast in two flavours: SRCU-fast and SRCU-fast-updown.

        Both are still targeted toward faster readers (without full
        barriers on LOCK and UNLOCK) at the expense of heavier write
        side (using full RCU grace period ordering instead of simply
        full ordering) as compared to "traditional" non-fast SRCU. But
        those srcu-fast flavours are going to be optimized in two
        different ways:

          - SRCU-fast will become the reimplementation basis for
            RCU-TASK-TRACE for consolidation. Since RCU-TASK-TRACE must
            be NMI safe, SRCU-fast must be as well.

          - SRCU-fast-updown will be needed for uretprobes code in order
            to get rid of the read-side memory barriers while still
            allowing entering the reader at task level while exiting it
            in a timer handler. It is considered semaphore-like in that
            it can have different owners between LOCK and UNLOCK.
            However it is not NMI-safe.

        The actual optimizations are work in progress for the next
        cycle. Only the new interfaces are added for now, along with
        related torture and scalability test code.

   - Create/document/debug/torture new proper initializers for RCU fast:
     DEFINE_SRCU_FAST() and init_srcu_struct_fast()

     This allows for using right away the proper ordering on the write
     side (either full ordering or full RCU grace period ordering)
     without waiting for the read side to tell which to use.

     This also optimizes the read side altogether with moving flavour
     debug checks under debug config and with removing a costly RmW
     operation on their first call.

   - Make some diagnostic functions tracing safe

  Refscale:

   - Add performance testing for common context synchronizations
     (Preemption, IRQ, Softirq) and per-cpu increments. Those are
     relevant comparisons against SRCU-fast read side APIs, especially
     as they are planned to synchronize further tracing fast-path code

  Miscellanous:

   - In order to prepare the layout for nohz_full work deferral to user
     exit, the context tracking state must shrink the counter of
     transitions to/from RCU not watching. The only possible hazard is
     to trigger wrap-around more easily, delaying a bit grace periods
     when that happens. This should be a rare event though. Yet add
     debugging and torture code to test that assumption

   - Fix memory leak on locktorture module

   - Annotate accesses in rculist_nulls.h to prevent from KCSAN
     warnings. On recent discussions, we also concluded that all those
     WRITE_ONCE() and READ_ONCE() on list APIs deserve appropriate
     comments. Something to be expected for the next cycle

   - Provide a script to apply several configs to several commits with
     torture

   - Allow torture to reuse a build directory in order to save needless
     rebuild time

   - Various cleanups"

* tag 'rcu.release.v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (29 commits)
  refscale: Add SRCU-fast-updown readers
  refscale: Exercise DEFINE_STATIC_SRCU_FAST() and init_srcu_struct_fast()
  rcutorture: Make srcu{,d}_torture_init() announce the SRCU type
  srcu: Create an SRCU-fast-updown API
  refscale: Do not disable interrupts for tests involving local_bh_enable()
  refscale: Add non-atomic per-CPU increment readers
  refscale: Add this_cpu_inc() readers
  refscale: Add preempt_disable() readers
  refscale: Add local_bh_disable() readers
  refscale: Add local_irq_disable() and local_irq_save() readers
  torture: Permit negative kvm.sh --kconfig numberic arguments
  srcu: Add SRCU_READ_FLAVOR_FAST_UPDOWN CPP macro
  rcu: Mark diagnostic functions as notrace
  rcutorture: Make TREE04 use CONFIG_RCU_DYNTICKS_TORTURE
  rcutorture: Remove redundant rcutorture_one_extend() from rcu_torture_one_read()
  rcutorture: Permit kvm-again.sh to re-use the build directory
  torture: Add kvm-series.sh to test commit/scenario combination
  rcu: use WRITE_ONCE() for ->next and ->pprev of hlist_nulls
  locktorture: Fix memory leak in param_set_cpumask()
  doc: Update for SRCU-fast definitions and initialization
  ...
2025-12-03 12:18:07 -08:00
Linus Torvalds
b687034b1a slab updates for 6.19
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Merge tag 'slab-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab updates from Vlastimil Babka:

 - mempool_alloc_bulk() support for upcoming users in the block layer
   that need to allocate multiple objects at once with the mempool's
   guaranteed progress semantics, which is not achievable with an
   allocation single objects in a loop. Along with refactoring and
   various improvements (Christoph Hellwig)

 - Preparations for the upcoming separation of struct slab from struct
   page, mostly by removing the struct folio layer, as the purpose of
   struct folio has shifted since it became used in slab code (Matthew
   Wilcox)

 - Modernisation of slab's boot param API usage, which removes some
   unexpected parsing corner cases (Petr Tesarik)

 - Refactoring of freelist_aba_t (now struct freelist_counters) and
   associated functions for double cmpxchg, enabled by -fms-extensions
   (Vlastimil Babka)

 - Cleanups and improvements related to sheaves caching layer, that were
   part of the full conversion to sheaves, which is planned for the next
   release (Vlastimil Babka)

* tag 'slab-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (42 commits)
  slab: Remove unnecessary call to compound_head() in alloc_from_pcs()
  mempool: clarify behavior of mempool_alloc_preallocated()
  mempool: drop the file name in the top of file comment
  mempool: de-typedef
  mempool: remove mempool_{init,create}_kvmalloc_pool
  mempool: legitimize the io_schedule_timeout in mempool_alloc_from_pool
  mempool: add mempool_{alloc,free}_bulk
  mempool: factor out a mempool_alloc_from_pool helper
  slab: Remove references to folios from virt_to_slab()
  kasan: Remove references to folio in __kasan_mempool_poison_object()
  memcg: Convert mem_cgroup_from_obj_folio() to mem_cgroup_from_obj_slab()
  mempool: factor out a mempool_adjust_gfp helper
  mempool: add error injection support
  mempool: improve kerneldoc comments
  mm: improve kerneldoc comments for __alloc_pages_bulk
  fault-inject: make enum fault_flags available unconditionally
  usercopy: Remove folio references from check_heap_object()
  slab: Remove folio references from kfree_nolock()
  slab: Remove folio references from kfree_rcu_sheaf()
  slab: Remove folio references from build_detached_freelist()
  ...
2025-12-03 11:53:47 -08:00
Linus Torvalds
f96163865a This has been another busy cycle for documentation, with a lot of
build-system thrashing.  That work should slow down from here on out.
 
 - The various scripts and tools for documentation were spread out in
   several directories; now they are (almost) all coalesced under
   tools/docs/.  The holdout is the kernel-doc script, which cannot be
   easily moved without some further thought.
 
 - As the amount of Python code increases, we are accumulating modules that
   are imported by multiple programs.  These modules have been pulled
   together under tools/lib/python/ -- at least, for documentation-related
   programs.  There is other Python code in the tree that might eventually
   want to move toward this organization.
 
 - The Perl kernel-doc.pl script has been removed.  It is no longer used by
   default, and nobody has missed it, least of all anybody who actually had
   to look at it.
 
 - The docs build was controlled by a complex mess of makefilese that few
   dared to touch.  Mauro has moved that logic into a new program
   (tools/docs/sphinx-build-wrapper) that, with any luck at all, will be far
   easier to understand and maintain.
 
 - The get_feat.pl program, used to access information under
   Documentation/features/, has been rewritten in Python, bringing an end to
   the use of Perl in the docs subsystem.
 
 - The top-level README file has been reorganized into a more
   reader-friendly presentation.
 
 - A lot of Chinese translation additions
 
 - Typo fixes and documentation updates as usual
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Merge tag 'docs-6.19' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This has been another busy cycle for documentation, with a lot of
  build-system thrashing. That work should slow down from here on out.

   - The various scripts and tools for documentation were spread out in
     several directories; now they are (almost) all coalesced under
     tools/docs/. The holdout is the kernel-doc script, which cannot be
     easily moved without some further thought.

   - As the amount of Python code increases, we are accumulating modules
     that are imported by multiple programs. These modules have been
     pulled together under tools/lib/python/ -- at least, for
     documentation-related programs. There is other Python code in the
     tree that might eventually want to move toward this organization.

   - The Perl kernel-doc.pl script has been removed. It is no longer
     used by default, and nobody has missed it, least of all anybody who
     actually had to look at it.

   - The docs build was controlled by a complex mess of makefilese that
     few dared to touch. Mauro has moved that logic into a new program
     (tools/docs/sphinx-build-wrapper) that, with any luck at all, will
     be far easier to understand and maintain.

   - The get_feat.pl program, used to access information under
     Documentation/features/, has been rewritten in Python, bringing an
     end to the use of Perl in the docs subsystem.

   - The top-level README file has been reorganized into a more
     reader-friendly presentation.

   - A lot of Chinese translation additions

   - Typo fixes and documentation updates as usual"

* tag 'docs-6.19' of git://git.lwn.net/linux: (164 commits)
  docs: makefile: move rustdoc check to the build wrapper
  README: restructure with role-based documentation and guidelines
  docs: kdoc: various fixes for grammar, spelling, punctuation
  docs: kdoc_parser: use '@' for Excess enum value
  docs: submitting-patches: Clarify that removal of Acks needs explanation too
  docs: kdoc_parser: add data/function attributes to ignore
  docs: MAINTAINERS: update Mauro's files/paths
  docs/zh_CN: Add wd719x.rst translation
  docs/zh_CN: Add libsas.rst translation
  get_feat.pl: remove it, as it got replaced by get_feat.py
  Documentation/sphinx/kernel_feat.py: use class directly
  tools/docs/get_feat.py: convert get_feat.pl to Python
  Documentation/admin-guide: fix typo and comment in cscope example
  docs/zh_CN: Add data-integrity.rst translation
  docs/zh_CN: Add blk-mq.rst translation
  docs/zh_CN: Add block/index.rst translation
  docs/zh_CN: Update the Chinese translation of kbuild.rst
  docs: bring some order to our Python module hierarchy
  docs: Move the python libraries to tools/lib/python
  Documentation/kernel-parameters: Move the kernel build options
  ...
2025-12-03 11:34:28 -08:00
Linus Torvalds
a619fe35ab This update includes the following changes:
API:
 
 - Rewrite memcpy_sglist from scratch.
 - Add on-stack AEAD request allocation.
 - Fix partial block processing in ahash.
 
 Algorithms:
 
 - Remove ansi_cprng.
 - Remove tcrypt tests for poly1305.
 - Fix EINPROGRESS processing in authenc.
 - Fix double-free in zstd.
 
 Drivers:
 
 - Use drbg ctr helper when reseeding xilinx-trng.
 - Add support for PCI device 0x115A to ccp.
 - Add support of paes in caam.
 - Add support for aes-xts in dthev2.
 
 Others:
 
 - Use likely in rhashtable lookup.
 - Fix lockdep false-positive in padata by removing a helper.
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Merge tag 'v6.19-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Rewrite memcpy_sglist from scratch
   - Add on-stack AEAD request allocation
   - Fix partial block processing in ahash

  Algorithms:
   - Remove ansi_cprng
   - Remove tcrypt tests for poly1305
   - Fix EINPROGRESS processing in authenc
   - Fix double-free in zstd

  Drivers:
   - Use drbg ctr helper when reseeding xilinx-trng
   - Add support for PCI device 0x115A to ccp
   - Add support of paes in caam
   - Add support for aes-xts in dthev2

  Others:
   - Use likely in rhashtable lookup
   - Fix lockdep false-positive in padata by removing a helper"

* tag 'v6.19-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (71 commits)
  crypto: zstd - fix double-free in per-CPU stream cleanup
  crypto: ahash - Zero positive err value in ahash_update_finish
  crypto: ahash - Fix crypto_ahash_import with partial block data
  crypto: lib/mpi - use min() instead of min_t()
  crypto: ccp - use min() instead of min_t()
  hwrng: core - use min3() instead of nested min_t()
  crypto: aesni - ctr_crypt() use min() instead of min_t()
  crypto: drbg - Delete unused ctx from struct sdesc
  crypto: testmgr - Add missing DES weak and semi-weak key tests
  Revert "crypto: scatterwalk - Move skcipher walk and use it for memcpy_sglist"
  crypto: scatterwalk - Fix memcpy_sglist() to always succeed
  crypto: iaa - Request to add Kanchana P Sridhar to Maintainers.
  crypto: tcrypt - Remove unused poly1305 support
  crypto: ansi_cprng - Remove unused ansi_cprng algorithm
  crypto: asymmetric_keys - fix uninitialized pointers with free attribute
  KEYS: Avoid -Wflex-array-member-not-at-end warning
  crypto: ccree - Correctly handle return of sg_nents_for_len
  crypto: starfive - Correctly handle return of sg_nents_for_len
  crypto: iaa - Fix incorrect return value in save_iaa_wq()
  crypto: zstd - Remove unnecessary size_t cast
  ...
2025-12-03 11:28:38 -08:00
Linus Torvalds
c832183148 ipe/stable-6.19 PR 20251202
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Merge tag 'ipe-pr-20251202' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe

Pull IPE udates from Fan Wu:
 "The primary change is the addition of support for the AT_EXECVE_CHECK
  flag. This allows interpreters to signal the kernel to perform IPE
  security checks on script files before execution, extending IPE
  enforcement to indirectly executed scripts.

  Update documentation for it, and also fix a comment"

* tag 'ipe-pr-20251202' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe:
  ipe: Update documentation for script enforcement
  ipe: Add AT_EXECVE_CHECK support for script enforcement
  ipe: Drop a duplicated CONFIG_ prefix in the ifdeffery
2025-12-03 11:19:34 -08:00
Linus Torvalds
777f817160 integrity-v6.19
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Merge tag 'integrity-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

Pull integrity updates from Mimi Zohar:
 "Bug fixes:

   - defer credentials checking from the bprm_check_security hook to the
     bprm_creds_from_file security hook

   - properly ignore IMA policy rules based on undefined SELinux labels

  IMA policy rule extensions:

   - extend IMA to limit including file hashes in the audit logs
     (dont_audit action)

   - define a new filesystem subtype policy option (fs_subtype)

  Misc:

   - extend IMA to support in-kernel module decompression by deferring
     the IMA signature verification in kernel_read_file() to after the
     kernel module is decompressed"

* tag 'integrity-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
  ima: Handle error code returned by ima_filter_rule_match()
  ima: Access decompressed kernel module to verify appended signature
  ima: add fs_subtype condition for distinguishing FUSE instances
  ima: add dont_audit action to suppress audit actions
  ima: Attach CREDS_CHECK IMA hook to bprm_creds_from_file LSM hook
2025-12-03 11:08:03 -08:00
Linus Torvalds
204a920f28 Patches for 6.19
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Merge tag 'Smack-for-6.19' of https://github.com/cschaufler/smack-next

Pull smack updates from Casey Schaufler:

 - fix several cases where labels were treated inconsistently when
   imported from user space

 - clean up the assignment of extended attributes

 - documentation improvements

* tag 'Smack-for-6.19' of https://github.com/cschaufler/smack-next:
  Smack: function parameter 'gfp' not described
  smack: fix kernel-doc warnings for smk_import_valid_label()
  smack: fix bug: setting task label silently ignores input garbage
  smack: fix bug: unprivileged task can create labels
  smack: fix bug: invalid label of unix socket file
  smack: always "instantiate" inode in smack_inode_init_security()
  smack: deduplicate xattr setting in smack_inode_init_security()
  smack: fix bug: SMACK64TRANSMUTE set on non-directory
  smack: deduplicate "does access rule request transmutation"
2025-12-03 10:58:59 -08:00
Linus Torvalds
0eae3283c3 audit/stable-6.19 PR 20251201
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Merge tag 'audit-pr-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit updates from Paul Moore:

 - Consolidate the loops in __audit_inode_child() to improve performance

   When logging a child inode in __audit_inode_child(), we first run
   through the list of recorded inodes looking for the parent and then
   we repeat the search looking for a matching child entry. This pull
   request consolidates both searches into one pass through the recorded
   inodes, resuling in approximately a 50% reduction in audit overhead.

   See the commit description for the testing details.

 - Combine kmalloc()/memset() into kzalloc() in audit_krule_to_data()

 - Comment fixes

* tag 'audit-pr-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: merge loops in __audit_inode_child()
  audit: Use kzalloc() instead of kmalloc()/memset() in audit_krule_to_data()
  audit: fix comment misindentation in audit.h
2025-12-03 10:52:01 -08:00
Linus Torvalds
51e3b98d73 selinux/stable-6.19 PR 20251201
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Merge tag 'selinux-pr-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux updates from Paul Moore:

 - Improve the granularity of SELinux labeling for memfd files

   Currently when creating a memfd file, SELinux treats it the same as
   any other tmpfs, or hugetlbfs, file. While simple, the drawback is
   that it is not possible to differentiate between memfd and tmpfs
   files.

   This adds a call to the security_inode_init_security_anon() LSM hook
   and wires up SELinux to provide a set of memfd specific access
   controls, including the ability to control the execution of memfds.

   As usual, the commit message has more information.

 - Improve the SELinux AVC lookup performance

   Adopt MurmurHash3 for the SELinux AVC hash function instead of the
   custom hash function currently used. MurmurHash3 is already used for
   the SELinux access vector table so the impact to the code is minimal,
   and performance tests have shown improvements in both hash
   distribution and latency.

   See the commit message for the performance measurments.

 - Introduce a Kconfig option for the SELinux AVC bucket/slot size

   While we have the ability to grow the number of AVC hash buckets
   today, the size of the buckets (slot size) is fixed at 512. This pull
   request makes that slot size configurable at build time through a new
   Kconfig knob, CONFIG_SECURITY_SELINUX_AVC_HASH_BITS.

* tag 'selinux-pr-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: improve bucket distribution uniformity of avc_hash()
  selinux: Move avtab_hash() to a shared location for future reuse
  selinux: Introduce a new config to make avc cache slot size adjustable
  memfd,selinux: call security_inode_init_security_anon()
2025-12-03 10:45:47 -08:00
Linus Torvalds
121cc35cfb lsm/stable-6.19 PR 20251201
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Merge tag 'lsm-pr-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull LSM updates from Paul Moore:

 - Rework the LSM initialization code

   What started as a "quick" patch to enable a notification event once
   all of the individual LSMs were initialized, snowballed a bit into a
   30+ patch patchset when everything was done. Most of the patches, and
   diffstat, is due to splitting out the initialization code into
   security/lsm_init.c and cleaning up some of the mess that was there.
   While not strictly necessary, it does cleanup the code signficantly,
   and hopefully makes the upkeep a bit easier in the future.

   Aside from the new LSM_STARTED_ALL notification, these changes also
   ensure that individual LSM initcalls are only called when the LSM is
   enabled at boot time. There should be a minor reduction in boot times
   for those who build multiple LSMs into their kernels, but only enable
   a subset at boot.

   It is worth mentioning that nothing at present makes use of the
   LSM_STARTED_ALL notification, but there is work in progress which is
   dependent upon LSM_STARTED_ALL.

 - Make better use of the seq_put*() helpers in device_cgroup

* tag 'lsm-pr-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: (36 commits)
  lsm: use unrcu_pointer() for current->cred in security_init()
  device_cgroup: Refactor devcgroup_seq_show to use seq_put* helpers
  lsm: add a LSM_STARTED_ALL notification event
  lsm: consolidate all of the LSM framework initcalls
  selinux: move initcalls to the LSM framework
  ima,evm: move initcalls to the LSM framework
  lockdown: move initcalls to the LSM framework
  apparmor: move initcalls to the LSM framework
  safesetid: move initcalls to the LSM framework
  tomoyo: move initcalls to the LSM framework
  smack: move initcalls to the LSM framework
  ipe: move initcalls to the LSM framework
  loadpin: move initcalls to the LSM framework
  lsm: introduce an initcall mechanism into the LSM framework
  lsm: group lsm_order_parse() with the other lsm_order_*() functions
  lsm: output available LSMs when debugging
  lsm: cleanup the debug and console output in lsm_init.c
  lsm: add/tweak function header comment blocks in lsm_init.c
  lsm: fold lsm_init_ordered() into security_init()
  lsm: cleanup initialize_lsm() and rename to lsm_init_single()
  ...
2025-12-03 09:53:48 -08:00
Linus Torvalds
7fc2cd2e4b Hi,
This pull request includes couple of updates for trusted keys:
 
 1. Remove duplicate 'tpm2_hash_map' and use the one in the drive via new
    function 'tpm2_find_hash_alg'.
 2. Fix a memory leak on failure paths of 'tpm2_load_cmd'.
 
 BR, Jarkko
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Merge tag 'keys-trusted-next-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull trusted key updates from Jarkko Sakkinen:

 - Remove duplicate 'tpm2_hash_map' in favor of 'tpm2_find_hash_alg()'

 - Fix a memory leak on failure paths of 'tpm2_load_cmd'

* tag 'keys-trusted-next-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  KEYS: trusted: Fix a memory leak in tpm2_load_cmd
  KEYS: trusted: Replace a redundant instance of tpm2_hash_map
2025-12-03 09:45:23 -08:00
Linus Torvalds
b082c4b060 Hi,
This first pull request for keys contains only three fixes.
 
 BR, Jarkko
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Merge tag 'keys-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull keys update from Jarkko Sakkinen:
 "This contains only three fixes"

* tag 'keys-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  keys: Fix grammar and formatting in 'struct key_type' comments
  keys: Replace deprecated strncpy in ecryptfs_fill_auth_tok
  keys: Remove redundant less-than-zero checks
2025-12-03 09:41:04 -08:00
Linus Torvalds
f2310b6271 nolibc changes for v6.19
Highlights:
 
 * Preparations to the use of nolibc in UML.
   * Cleanup of sparse warnings.
   * Library mode without _start().
   * More consistency when disabling errno.
 * Unconditional installation of all architecture support files.
 * Always 64-bit wide ino_t and off_t.
 * Various cleanups and bug fixes.
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Merge tag 'nolibc-20251130-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc

Pull nolibc updates from Thomas Weißschuh:

 - Preparations to the use of nolibc in UML:
     - Cleanup of sparse warnings
     - Library mode without _start()
     - More consistency when disabling errno

 - Unconditional installation of all architecture support files

 - Always 64-bit wide ino_t and off_t

 - Various cleanups and bug fixes

* tag 'nolibc-20251130-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (25 commits)
  selftests/nolibc: error out on linker warnings
  selftests/nolibc: use lld to link loongarch binaries
  tools/nolibc: remove more __nolibc_enosys() fallbacks
  tools/nolibc: remove now superfluous overflow check in llseek
  tools/nolibc: use 64-bit off_t
  tools/nolibc: prefer the llseek syscall
  tools/nolibc: handle 64-bit off_t for llseek
  tools/nolibc: use 64-bit ino_t
  tools/nolibc: avoid using plain integer as NULL pointer
  tools/nolibc: add support for fchdir()
  tools/nolibc: clean up outdated comments in generic arch.h
  tools/nolibc: make the "headers" target install all supported archs
  tools/nolibc: add the more portable inttypes.h
  tools/nolibc: provide the portable sys/select.h
  tools/nolibc: add missing memchr() to string.h
  tools/nolibc: fix misleading help message regarding installation path
  tools/nolibc: add uio.h with readv and writev
  tools/nolibc: add option to disable runtime
  tools/nolibc: use __fallthrough__ rather than fallthrough
  tools/nolibc: implement %m if errno is not defined
  ...
2025-12-03 09:23:25 -08:00
Rob Herring (Arm)
82d7a9da6e dt-bindings: thermal: qcom-tsens: Remove invalid tab character
Commit 1ee90870ce ("dt-bindings: thermal: tsens: Add QCS8300
compatible") uses a tab character which is illegal in YAML (at the
beginning of a line).  The original patch was correct, so this got
corrupted when applied.

Fixes: 1ee90870ce ("dt-bindings: thermal: tsens: Add QCS8300 compatible")
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-12-03 08:30:31 -08:00
Yanzhu Huang
d7ba853c0e ipe: Update documentation for script enforcement
This patch adds explanation of script enforcement mechanism in admin
guide documentation. Describes how IPE supports integrity enforcement
for indirectly executed scripts through the AT_EXECVE_CHECK flag, and
how this differs from kernel enforcement for compiled executables.

Signed-off-by: Yanzhu Huang <yanzhuhuang@linux.microsoft.com>
Signed-off-by: Fan Wu <wufan@kernel.org>
2025-12-02 19:37:10 -08:00
Yanzhu Huang
67678189e4 ipe: Add AT_EXECVE_CHECK support for script enforcement
This patch adds a new ipe_bprm_creds_for_exec() hook that integrates
with the AT_EXECVE_CHECK mechanism. To enable script enforcement,
interpreters need to incorporate the AT_EXECVE_CHECK flag when
calling execveat() on script files before execution.

When a userspace interpreter calls execveat() with the AT_EXECVE_CHECK
flag, this hook triggers IPE policy evaluation on the script file. The
hook only triggers IPE when bprm->is_check is true, ensuring it's
being called from an AT_EXECVE_CHECK context. It then builds an
evaluation context for an IPE_OP_EXEC operation and invokes IPE policy.
The kernel returns the policy decision to the interpreter, which can
then decide whether to proceed with script execution.

This extends IPE enforcement to indirectly executed scripts, permitting
trusted scripts to execute while denying untrusted ones.

Signed-off-by: Yanzhu Huang <yanzhuhuang@linux.microsoft.com>
Signed-off-by: Fan Wu <wufan@kernel.org>
2025-12-02 19:37:01 -08:00
Borislav Petkov (AMD)
864468ae30 ipe: Drop a duplicated CONFIG_ prefix in the ifdeffery
Looks like it got added by mistake, perhaps editor auto-completion
artifact. Drop it.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Fan Wu <wufan@kernel.org>
2025-12-02 19:29:21 -08:00
Linus Torvalds
3f9f025213 Random number generator updates for Linux 6.19-rc1.
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Merge tag 'random-6.19-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull random number generator updates from Jason Donenfeld:

 - Dynamically allocate cpumasks off of the stack if the kernel is
   configured for a lot of CPUs, to handle a -Wframe-larger-than case

 - The removal of next_pseudo_random32() after the last user was
   switched over to the prandom interface

 - The removal of get_random_u{8,16,32,64}_wait() functions, as there
   were no users of those at all

 - Some house keeping changes - a few grammar cleanups in the
   comments, system_unbound_wq was renamed to system_dfl_wq, and
   static_key_initialized no longer needs to be checked

* tag 'random-6.19-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  random: complete sentence of comment
  random: drop check for static_key_initialized
  random: remove unused get_random_var_wait functions
  random: replace use of system_unbound_wq with system_dfl_wq
  random: use offstack cpumask when necessary
  prandom: remove next_pseudo_random32
  media: vivid: use prandom
  random: add missing words in function comments
2025-12-02 19:00:26 -08:00
Linus Torvalds
f617d24606 arm64 FPSIMD buffer on-stack for 6.19
In v6.8, the size of task_struct on arm64 increased by 528 bytes due
 to the new 'kernel_fpsimd_state' field. This field was added to allow
 kernel-mode FPSIMD code to be preempted.
 
 Unfortunately, 528 bytes is kind of a lot for task_struct. This
 regression in the task_struct size was noticed and reported.
 
 Recover that space by making this state be allocated on the stack at
 the beginning of each kernel-mode FPSIMD section.
 
 To make it easier for all the users of kernel-mode FPSIMD to do that
 correctly, introduce and use a 'scoped_ksimd' abstraction.
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Merge tag 'fpsimd-on-stack-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull arm64 FPSIMD on-stack buffer updates from Eric Biggers:
 "This is a core arm64 change. However, I was asked to take this because
  most uses of kernel-mode FPSIMD are in crypto or CRC code.

  In v6.8, the size of task_struct on arm64 increased by 528 bytes due
  to the new 'kernel_fpsimd_state' field. This field was added to allow
  kernel-mode FPSIMD code to be preempted.

  Unfortunately, 528 bytes is kind of a lot for task_struct. This
  regression in the task_struct size was noticed and reported.

  Recover that space by making this state be allocated on the stack at
  the beginning of each kernel-mode FPSIMD section.

  To make it easier for all the users of kernel-mode FPSIMD to do that
  correctly, introduce and use a 'scoped_ksimd' abstraction"

* tag 'fpsimd-on-stack-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (23 commits)
  lib/crypto: arm64: Move remaining algorithms to scoped ksimd API
  lib/crypto: arm/blake2b: Move to scoped ksimd API
  arm64/fpsimd: Allocate kernel mode FP/SIMD buffers on the stack
  arm64/fpu: Enforce task-context only for generic kernel mode FPU
  net/mlx5: Switch to more abstract scoped ksimd guard API on arm64
  arm64/xorblocks:  Switch to 'ksimd' scoped guard API
  crypto/arm64: sm4 - Switch to 'ksimd' scoped guard API
  crypto/arm64: sm3 - Switch to 'ksimd' scoped guard API
  crypto/arm64: sha3 - Switch to 'ksimd' scoped guard API
  crypto/arm64: polyval - Switch to 'ksimd' scoped guard API
  crypto/arm64: nhpoly1305 - Switch to 'ksimd' scoped guard API
  crypto/arm64: aes-gcm - Switch to 'ksimd' scoped guard API
  crypto/arm64: aes-blk - Switch to 'ksimd' scoped guard API
  crypto/arm64: aes-ccm - Switch to 'ksimd' scoped guard API
  raid6: Move to more abstract 'ksimd' guard API
  crypto: aegis128-neon - Move to more abstract 'ksimd' guard API
  crypto/arm64: sm4-ce-gcm - Avoid pointless yield of the NEON unit
  crypto/arm64: sm4-ce-ccm - Avoid pointless yield of the NEON unit
  crypto/arm64: aes-ce-ccm - Avoid pointless yield of the NEON unit
  lib/crc: Switch ARM and arm64 to 'ksimd' scoped guard API
  ...
2025-12-02 18:53:50 -08:00
Linus Torvalds
906003e151 'at_least' array sizes for 6.19
C supports lower bounds on the sizes of array parameters, using the
 static keyword as follows: 'void f(int a[static 32]);'. This allows
 the compiler to warn about a too-small array being passed.
 
 As discussed, this reuse of the 'static' keyword, while standard, is a
 bit obscure. Therefore, add an alias 'at_least' to compiler_types.h.
 
 Then, add this 'at_least' annotation to the array parameters of
 various crypto library functions.
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Merge tag 'libcrypto-at-least-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull 'at_least' array size update from Eric Biggers:
 "C supports lower bounds on the sizes of array parameters, using the
  static keyword as follows: 'void f(int a[static 32]);'. This allows
  the compiler to warn about a too-small array being passed.

  As discussed, this reuse of the 'static' keyword, while standard, is a
  bit obscure. Therefore, add an alias 'at_least' to compiler_types.h.

  Then, add this 'at_least' annotation to the array parameters of
  various crypto library functions"

* tag 'libcrypto-at-least-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
  lib/crypto: sha2: Add at_least decoration to fixed-size array params
  lib/crypto: sha1: Add at_least decoration to fixed-size array params
  lib/crypto: poly1305: Add at_least decoration to fixed-size array params
  lib/crypto: md5: Add at_least decoration to fixed-size array params
  lib/crypto: curve25519: Add at_least decoration to fixed-size array params
  lib/crypto: chacha: Add at_least decoration to fixed-size array params
  lib/crypto: chacha20poly1305: Statically check fixed array lengths
  compiler_types: introduce at_least parameter decoration pseudo keyword
  wifi: iwlwifi: trans: rename at_least variable to min_mode
2025-12-02 18:26:54 -08:00
Linus Torvalds
8f4c9978de AES-GCM optimizations for 6.19
More optimizations and cleanups for the x86_64 AES-GCM code:
 
 - Add a VAES+AVX2 optimized implementation of AES-GCM. This is very
   helpful on CPUs that have VAES but not AVX512, such as AMD Zen 3.
 
 - Make the VAES+AVX512 optimized implementation of AES-GCM handle
   large amounts of associated data efficiently.
 
 - Remove the "avx10_256" implementation of AES-GCM. It's superseded by
   the VAES+AVX2 optimized implementation.
 
 - Rename the "avx10_512" implementation to "avx512".
 
 Overall, this fills in a gap where AES-GCM wasn't fully optimized on
 some recent CPUs. It also drops code that won't be as useful as
 initially expected due to AVX10/256 being dropped from the AVX10 spec.
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Merge tag 'aes-gcm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull AES-GCM optimizations from Eric Biggers:
 "More optimizations and cleanups for the x86_64 AES-GCM code:

   - Add a VAES+AVX2 optimized implementation of AES-GCM. This is very
     helpful on CPUs that have VAES but not AVX512, such as AMD Zen 3.

   - Make the VAES+AVX512 optimized implementation of AES-GCM handle
     large amounts of associated data efficiently.

   - Remove the "avx10_256" implementation of AES-GCM. It's superseded
     by the VAES+AVX2 optimized implementation.

   - Rename the "avx10_512" implementation to "avx512"

  Overall, this fills in a gap where AES-GCM wasn't fully optimized on
  some recent CPUs. It also drops code that won't be as useful as
  initially expected due to AVX10/256 being dropped from the AVX10 spec"

* tag 'aes-gcm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
  crypto: x86/aes-gcm-vaes-avx2 - initialize full %rax return register
  crypto: x86/aes-gcm - optimize long AAD processing with AVX512
  crypto: x86/aes-gcm - optimize AVX512 precomputation of H^2 from H^1
  crypto: x86/aes-gcm - revise some comments in AVX512 code
  crypto: x86/aes-gcm - reorder AVX512 precompute and aad_update functions
  crypto: x86/aes-gcm - clean up AVX512 code to assume 512-bit vectors
  crypto: x86/aes-gcm - rename avx10 and avx10_512 to avx512
  crypto: x86/aes-gcm - remove VAES+AVX10/256 optimized code
  crypto: x86/aes-gcm - add VAES+AVX2 optimized code
2025-12-02 18:24:35 -08:00
Linus Torvalds
db425f7a0b Crypto library tests for 6.19
- Add KUnit test suites for SHA-3, BLAKE2b, and POLYVAL. These are the
   algorithms that have new crypto library interfaces this cycle.
 
 - Remove the crypto_shash POLYVAL tests. They're no longer needed
   because POLYVAL support was removed from crypto_shash. Better
   POLYVAL test coverage is now provided via the KUnit test suite.
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Merge tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull crypto library test updates from Eric Biggers:

 - Add KUnit test suites for SHA-3, BLAKE2b, and POLYVAL. These are the
   algorithms that have new crypto library interfaces this cycle.

 - Remove the crypto_shash POLYVAL tests. They're no longer needed
   because POLYVAL support was removed from crypto_shash. Better POLYVAL
   test coverage is now provided via the KUnit test suite.

* tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
  crypto: testmgr - Remove polyval tests
  lib/crypto: tests: Add KUnit tests for POLYVAL
  lib/crypto: tests: Add additional SHAKE tests
  lib/crypto: tests: Add SHA3 kunit tests
  lib/crypto: tests: Add KUnit tests for BLAKE2b
2025-12-02 18:20:06 -08:00
Linus Torvalds
5abe8d8efc Crypto library updates for 6.19
This is the main crypto library pull request for 6.19. It includes:
 
 - Add SHA-3 support to lib/crypto/, including support for both the
   hash functions and the extendable-output functions. Reimplement the
   existing SHA-3 crypto_shash support on top of the library.
 
   This is motivated mainly by the upcoming support for the ML-DSA
   signature algorithm, which needs the SHAKE128 and SHAKE256
   functions. But even on its own it's a useful cleanup.
 
   This also fixes the longstanding issue where the
   architecture-optimized SHA-3 code was disabled by default.
 
 - Add BLAKE2b support to lib/crypto/, and reimplement the existing
   BLAKE2b crypto_shash support on top of the library.
 
   This is motivated mainly by btrfs, which supports BLAKE2b checksums.
   With this change, all btrfs checksum algorithms now have library
   APIs. btrfs is planned to start just using the library directly.
 
   This refactor also improves consistency between the BLAKE2b code and
   BLAKE2s code. And as usual, it also fixes the issue where the
   architecture-optimized BLAKE2b code was disabled by default.
 
 - Add POLYVAL support to lib/crypto/, replacing the existing POLYVAL
   support in crypto_shash. Reimplement HCTR2 on top of the library.
 
   This simplifies the code and improves HCTR2 performance. As usual,
   it also makes the architecture-optimized code be enabled by default.
   The generic implementation of POLYVAL is greatly improved as well.
 
 - Clean up the BLAKE2s code.
 
 - Add FIPS self-tests for SHA-1, SHA-2, and SHA-3.
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Merge tag 'libcrypto-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull crypto library updates from Eric Biggers:
 "This is the main crypto library pull request for 6.19. It includes:

   - Add SHA-3 support to lib/crypto/, including support for both the
     hash functions and the extendable-output functions. Reimplement the
     existing SHA-3 crypto_shash support on top of the library.

     This is motivated mainly by the upcoming support for the ML-DSA
     signature algorithm, which needs the SHAKE128 and SHAKE256
     functions. But even on its own it's a useful cleanup.

     This also fixes the longstanding issue where the
     architecture-optimized SHA-3 code was disabled by default.

   - Add BLAKE2b support to lib/crypto/, and reimplement the existing
     BLAKE2b crypto_shash support on top of the library.

     This is motivated mainly by btrfs, which supports BLAKE2b
     checksums. With this change, all btrfs checksum algorithms now have
     library APIs. btrfs is planned to start just using the library
     directly.

     This refactor also improves consistency between the BLAKE2b code
     and BLAKE2s code. And as usual, it also fixes the issue where the
     architecture-optimized BLAKE2b code was disabled by default.

   - Add POLYVAL support to lib/crypto/, replacing the existing POLYVAL
     support in crypto_shash. Reimplement HCTR2 on top of the library.

     This simplifies the code and improves HCTR2 performance. As usual,
     it also makes the architecture-optimized code be enabled by
     default. The generic implementation of POLYVAL is greatly improved
     as well.

   - Clean up the BLAKE2s code

   - Add FIPS self-tests for SHA-1, SHA-2, and SHA-3"

* tag 'libcrypto-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (37 commits)
  fscrypt: Drop obsolete recommendation to enable optimized POLYVAL
  crypto: polyval - Remove the polyval crypto_shash
  crypto: hctr2 - Convert to use POLYVAL library
  lib/crypto: x86/polyval: Migrate optimized code into library
  lib/crypto: arm64/polyval: Migrate optimized code into library
  lib/crypto: polyval: Add POLYVAL library
  crypto: polyval - Rename conflicting functions
  lib/crypto: x86/blake2s: Use vpternlogd for 3-input XORs
  lib/crypto: x86/blake2s: Avoid writing back unchanged 'f' value
  lib/crypto: x86/blake2s: Improve readability
  lib/crypto: x86/blake2s: Use local labels for data
  lib/crypto: x86/blake2s: Drop check for nblocks == 0
  lib/crypto: x86/blake2s: Fix 32-bit arg treated as 64-bit
  lib/crypto: arm, arm64: Drop filenames from file comments
  lib/crypto: arm/blake2s: Fix some comments
  crypto: s390/sha3 - Remove superseded SHA-3 code
  crypto: sha3 - Reimplement using library API
  crypto: jitterentropy - Use default sha3 implementation
  lib/crypto: s390/sha3: Add optimized one-shot SHA-3 digest functions
  lib/crypto: sha3: Support arch overrides of one-shot digest functions
  ...
2025-12-02 18:01:03 -08:00
Linus Torvalds
619f4edc8d Thermal control updates for 6.19-rc1
- Add Nova Lake processor thermal device to the int340x
    processor_thermal driver, add DLVR support for Nova Lake to it,
    add Nova Lake support to the ACPI DPTF code, document thermal
    throttling on Intel platforms, and update workload type hint
    interface documentation (Srinivas Pandruvada)
 
  - Remove int340x thermal scan handler from the ACPI DPTF code
    because it turned out to be unnecessary (Slawomir Rosek)
 
  - Clean up the Intel int340x thermal driver (Kaushlendra Kumar)
 
  - Document the RZ/V2H TSU DT bindings (Ovidiu Panait)
 
  - Document the Kaanapali Temperature Sensor (Manaf Meethalavalappu
    Pallikunhi)
 
  - Document R-Car Gen4 and RZ/G2 support in driver comment (Marek Vasut)
 
  - Convert to DEFINE_SIMPLE_DEV_PM_OPS() in R-Car [Gen3] (Geert
    Uytterhoeven)
 
  - Fix format string bug in thermal-engine (Malaya Kumar Rout)
 
  - Make ipq5018 tsens standalone compatible (George Moussalem)
 
  - Add the QCS8300 compatible for QCom Tsens (Gaurav Kohli)
 
  - Add support for the NXP i.MX91 thermal module, including the DT
    bindings (Pengfei Li)
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Merge tag 'thermal-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control updates from Rafael Wysocki:
 "These add Nova Lake processor support to the Intel thermal drivers and
  DPTF code, update thermal control documentation, simplify the ACPI
  DPTF code related to thermal control, add QCS8300 compatible to the
  tsens thermal DT bindings, add DT bindings for NXP i.MX91 thermal
  module and add support for it to the imx91 thermal driver, update a
  few other thermal drivers and fix a format string issue in a thermal
  utility:

   - Add Nova Lake processor thermal device to the int340x
     processor_thermal driver, add DLVR support for Nova Lake to it, add
     Nova Lake support to the ACPI DPTF code, document thermal
     throttling on Intel platforms, and update workload type hint
     interface documentation (Srinivas Pandruvada)

   - Remove int340x thermal scan handler from the ACPI DPTF code because
     it turned out to be unnecessary (Slawomir Rosek)

   - Clean up the Intel int340x thermal driver (Kaushlendra Kumar)

   - Document the RZ/V2H TSU DT bindings (Ovidiu Panait)

   - Document the Kaanapali Temperature Sensor (Manaf Meethalavalappu
     Pallikunhi)

   - Document R-Car Gen4 and RZ/G2 support in driver comment (Marek
     Vasut)

   - Convert to DEFINE_SIMPLE_DEV_PM_OPS() in R-Car [Gen3] (Geert
     Uytterhoeven)

   - Fix format string bug in thermal-engine (Malaya Kumar Rout)

   - Make ipq5018 tsens standalone compatible (George Moussalem)

   - Add the QCS8300 compatible for QCom Tsens (Gaurav Kohli)

   - Add support for the NXP i.MX91 thermal module, including the DT
     bindings (Pengfei Li)"

* tag 'thermal-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal/drivers/imx91: Add support for i.MX91 thermal monitoring unit
  dt-bindings: thermal: fsl,imx91-tmu: add bindings for NXP i.MX91 thermal module
  dt-bindings: thermal: tsens: Add QCS8300 compatible
  dt-bindings: thermal: qcom-tsens: make ipq5018 tsens standalone compatible
  tools/thermal/thermal-engine: Fix format string bug in thermal-engine
  docs: driver-api/thermal/intel_dptf: Add new workload type hint
  thermal/drivers/rcar_gen3: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
  thermal/drivers/rcar: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
  Documentation: thermal: Document thermal throttling on Intel platforms
  ACPI: DPTF: Support Nova Lake
  thermal: intel: int340x: Add DLVR support for Nova Lake
  thermal: int340x: processor_thermal: Add Nova Lake processor thermal device
  thermal: intel: int340x: Replace sprintf() with sysfs_emit()
  thermal: intel: int340x: Use symbolic constant for UUID comparison
  thermal/drivers/rcar_gen3: Document R-Car Gen4 and RZ/G2 support in driver comment
  dt-bindings: thermal: qcom-tsens: document the Kaanapali Temperature Sensor
  dt-bindings: thermal: r9a09g047-tsu: Document RZ/V2H TSU
  ACPI: DPTF: Remove int340x thermal scan handler
  thermal: intel: Select INT340X_THERMAL from INTEL_SOC_DTS_THERMAL
2025-12-02 17:49:12 -08:00