mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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1,462,193 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Gal Pressman
|
ed6788c5a7 |
selftests: drv-net: limit RPS test CPUs to supported range
The _get_unused_cpus() function can return CPU numbers >= 16, which
exceeds RPS_MAX_CPUS in toeplitz.c. When this happens, the test fails
with a cryptic message:
# Exception| Traceback (most recent call last):
# Exception| File "/tmp/cur/linux/tools/testing/selftests/net/lib/py/ksft.py", line 319, in ksft_run
# Exception| func(*args)
# Exception| File "/tmp/cur/linux/tools/testing/selftests/drivers/net/hw/toeplitz.py", line 189, in test
# Exception| with bkg(" ".join(rx_cmd), ksft_ready=True, exit_wait=True) as rx_proc:
# Exception| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# Exception| File "/tmp/cur/linux/tools/testing/selftests/net/lib/py/utils.py", line 124, in __init__
# Exception| super().__init__(comm, background=True,
# Exception| File "/tmp/cur/linux/tools/testing/selftests/net/lib/py/utils.py", line 77, in __init__
# Exception| raise Exception("Did not receive ready message")
# Exception| Exception: Did not receive ready message
Rename _get_unused_cpus() to _get_unused_rps_cpus() and cap the CPU
search range to RPS_MAX_CPUS.
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260210093110.1935149-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
Yue Haibing
|
10ec0fc0cc |
selftests: net: lib: Fix jq parsing error
The testcase failed as below:
$./vlan_bridge_binding.sh
...
+ adf_ip_link_set_up d1
+ local name=d1
+ shift
+ ip_link_is_up d1
+ ip_link_has_flag d1 UP
+ local name=d1
+ shift
+ local flag=UP
+ shift
++ ip -j link show d1
++ jq --arg flag UP 'any(.[].flags.[]; . == $flag)'
jq: error: syntax error, unexpected '[', expecting FORMAT or QQSTRING_START
(Unix shell quoting issues?) at <top-level>, line 1:
any(.[].flags.[]; . == $flag)
jq: 1 compile error
Remove the extra dot (.) after flags array to fix this.
Fixes:
|
||
Chen Ni
|
fe6515f595 |
bng_en: Remove duplicate include
Remove duplicate inclusion of <net/netdev_queues.h>. Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com> Link: https://patch.msgid.link/20260211032021.2719742-1-nichen@iscas.ac.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Ido Schimmel
|
a2646773a0 |
selftests: mlxsw: tc_restrictions: Fix test failure with new iproute2
As explained in [1], iproute2 started rejecting tc-police burst sizes
that result in an overflow. This can happen when the burst size is high
enough and the rate is low enough.
A couple of test cases specify such configurations, resulting in
iproute2 errors and test failure.
Fix by reducing the burst size so that the test will pass with both new
and old iproute2 versions.
[1] https://lore.kernel.org/netdev/20250916215731.3431465-1-jay.vosburgh@canonical.com/
Fixes:
|
||
Jeremy Kerr
|
a6a9bc544b |
net: mctp: ensure our nlmsg responses are initialised
Syed Faraz Abrar (@farazsth98) from Zellic, and Pumpkin (@u1f383) from DEVCORE Research Team working with Trend Micro Zero Day Initiative report that a RTM_GETNEIGH will return uninitalised data in the pad bytes of the ndmsg data. Ensure we're initialising the netlink data to zero, in the link, addr and neigh response messages. Fixes: |
||
Linus Torvalds
|
7563f7e0e9 |
power supply and reset changes for the 7.0 series
* power-supply core
- sysfs: Constify pointer passed to dev_attr_psp
- extend DT binding documentation for battery cells to allow
describing voltage drop behaviour
* power-supply drivers
- multiple: Remove unused gpio include header
- multiple: Fix potential IRQ use-after-free on driver unload
- bd71828: Add support for ROHM BD72720
- misc. small fixes
* reset drivers
- tdx-ec-poweroff: fix restart
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Merge tag 'for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"power-supply core:
- sysfs: constify pointer passed to dev_attr_psp
- extend DT binding documentation for battery cells to allow
describing voltage drop behaviour
power-supply drivers:
- multiple: Remove unused gpio include header
- multiple: Fix potential IRQ use-after-free on driver unload
- bd71828: Add support for ROHM BD72720
- misc small fixes
reset drivers:
- tdx-ec-poweroff: fix restart"
* tag 'for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (30 commits)
power: supply: bd71828: Use dev_err_probe()
dt-bindings: power: supply: google,goldfish-battery: Convert to DT schema
power: supply: qcom_battmgr: Recognize "LiP" as lithium-polymer
power: supply: wm97xx: Use devm_power_supply_register()
power: supply: wm97xx: Use devm_kcalloc()
power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
power: reset: tdx-ec-poweroff: fix restart
docs: power: update documentation about removed function
power: supply: wm97xx: Fix NULL pointer dereference in power_supply_changed()
MAINTAINERS: adjust file entry in ROHM BD71828 CHARGER
power: supply: ab8500_chargalg: improve kernel-doc
power: supply: sysfs: Constify pointer passed to dev_attr_psp()
power: supply: bq27xxx: fix wrong errno when bus ops are unsupported
power: reset: nvmem-reboot-mode: respect cell size for nvmem_cell_write
power: supply: sbs-battery: Fix use-after-free in power_supply_changed()
power: supply: rt9455: Fix use-after-free in power_supply_changed()
power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()
power: supply: pm8916_bms_vm: Fix use-after-free in power_supply_changed()
power: supply: pf1550: Fix use-after-free in power_supply_changed()
power: supply: goldfish: Fix use-after-free in power_supply_changed()
...
|
||
|
Chen Ni
|
7c375811b5 |
myri10ge: replace comma with semicolons
Commit
|
||
|
Linus Torvalds
|
7449f86baf |
NFS Client Updates for Linux 7.0
New Features:
* Use an LRU list for returning unused delegations
* Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1 the default
Bugfixes:
* NFS/localio: Handle short writes by retrying
* NFS/localio: prevent direct reclaim recursion into NFS via nfs_writepages
* NFS/localio: use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
* NFS/localio: remove -EAGAIN handling in nfs_local_doio()
* pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
* fs/nfs: Fix a readdir slow-start regression
* SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Other Cleanups and Improvements:
* A few other NFS/localio cleanups
* Various other delegation handling cleanups from Christoph
* Unify security_inode_listsecurity() calls
* Improvements to NFSv4 lease handling
* Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set
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Merge tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Use an LRU list for returning unused delegations
- Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1
the default
Bugfixes:
- NFS/localio:
- Handle short writes by retrying
- Prevent direct reclaim recursion into NFS via nfs_writepages
- Use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
- Remove -EAGAIN handling in nfs_local_doio()
- pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
- fs/nfs: Fix a readdir slow-start regression
- SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Other cleanups and improvements:
- A few other NFS/localio cleanups
- Various other delegation handling cleanups from Christoph
- Unify security_inode_listsecurity() calls
- Improvements to NFSv4 lease handling
- Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set"
* tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (60 commits)
SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
nfs: nfs4proc: Convert comma to semicolon
SUNRPC: Change list definition method
sunrpc: rpc_debug and others are defined even if CONFIG_SUNRPC_DEBUG unset
NFSv4: limit lease period in nfs4_set_lease_period()
NFSv4: pass lease period in seconds to nfs4_set_lease_period()
nfs: unify security_inode_listsecurity() calls
fs/nfs: Fix readdir slow-start regression
pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
NFS: fix delayed delegation return handling
NFS: simplify error handling in nfs_end_delegation_return
NFS: fold nfs_abort_delegation_return into nfs_end_delegation_return
NFS: remove the delegation == NULL check in nfs_end_delegation_return
NFS: use bool for the issync argument to nfs_end_delegation_return
NFS: return void from ->return_delegation
NFS: return void from nfs4_inode_make_writeable
NFS: Merge CONFIG_NFS_V4_1 with CONFIG_NFS_V4
NFS: Add a way to disable NFS v4.0 via KConfig
NFS: Move sequence slot operations into minorversion operations
NFS: Pass a struct nfs_client to nfs4_init_sequence()
...
|
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Jakub Kicinski
|
5a70285662 |
Merge branch 'net-phy_port-sfp-modules-representation-and-phy_port-listing'
Maxime Chevallier says: ==================== net: phy_port: SFP modules representation and phy_port listing (part) ==================== Applying just the initial cleanup + fixes from the series. Link: https://patch.msgid.link/20260205092317.755906-1-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Maxime Chevallier
|
4cebb26ac6 |
net: phy: phy_port: Correctly recompute the port's linkmodes
a PHY-driven phy_port contains a 'supported' field containing the
linkmodes available on this port. This is populated based on :
- The PHY's reported features
- The DT representation of the connector
- The PHY's attach_mdi() callback
As these different attrbution methods work in conjunction, the helper
phy_port_update_supported() recomputes the final 'supported' value based
on the populated mediums, linkmodes and pairs.
However this recompute wasn't correctly implemented, and added more
modes than necessary by or'ing the medium-specific modes to the existing
support. Let's fix this and properly filter the modes.
Fixes:
|
||
|
Maxime Chevallier
|
6248f3dc4e |
net: phy: phy_port: Cleanup the of-parsing logic for phy_port
We don't need to maintain a mediums bitfield, let's drop it and drop a bogus check for empty mediums, as we already check it above. Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org> Link: https://patch.msgid.link/20260205092317.755906-3-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Maxime Chevallier
|
0561667105 |
net: phy: initialize the port support based on the PHY's for OF ports
With the phy_port infrastructure came an ethernet-connector binding, allowing to represent the MDI of a PHY in devicetree. This allows specifying the mediums and pairs of a port. Let's initialize the port's supported list based on what the PHY reports, so that we can then filter it with what the connector allows using. Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org> Link: https://patch.msgid.link/20260205092317.755906-2-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
8429538c2c |
tools/testing: keep legacy generated files around in .gitignore file
People keep removing generated files from .gitignore files even when the
files stay around. Please don't do that: just because the file is no
longer being generated doesn't make it magically go away, and doesn't
make it suddenly be something that should now not be ignored any more.
Fixes:
|
||
|
Linus Torvalds
|
2c75a8d92c |
ATA changes for 6.20
- Cleanup IRQ masking in the handling of completed report zones
commands (Niklas).
- Improve the handling of Thunderbolt attached devices to speed up
device removal (Henry).
- Several patches to generalize the existing max_sec quirks to
facilitates quirking the maximum command size of buggy drives, many
of which have recently showed up with the recent increase of the
default max_sectors block limit (Niklas).
- Cleanup the ahci-platform and sata dt-bindings schema (Rob,
Manivannan).
- Improve device node scan in the ahci-dwc driver (Krzysztof).
- Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
(Krzysztof).
- Fix a long standing potential command starvation situation with
non-NCQ commands issued when NCQ commands are on-going (me).
- Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas).
- Remove Vesa Local Bus (VLB) support in the pata_legacy driver
(Ethan).
- Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
drivers (Ethan, Linus W.)
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Merge tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ATA updates from Damien Le Moal:
- Cleanup IRQ masking in the handling of completed report zones
commands (Niklas)
- Improve the handling of Thunderbolt attached devices to speed up
device removal (Henry)
- Several patches to generalize the existing max_sec quirks to
facilitates quirking the maximum command size of buggy drives, many
of which have recently showed up with the recent increase of the
default max_sectors block limit (Niklas)
- Cleanup the ahci-platform and sata dt-bindings schema (Rob,
Manivannan)
- Improve device node scan in the ahci-dwc driver (Krzysztof)
- Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
(Krzysztof)
- Fix a long standing potential command starvation situation with
non-NCQ commands issued when NCQ commands are on-going (me)
- Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas)
- Remove Vesa Local Bus (VLB) support in the pata_legacy driver (Ethan)
- Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
drivers (Ethan, Linus W)
* tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: pata_ftide010: Fix some DMA timings
ata: pata_cypress: fix typo in error message
ata: pata_legacy: remove VLB support
ata: libata-core: Quirk INTEL SSDSC2KG480G8 max_sectors
dt-bindings: ata: sata: Document the graph port
ata: libata-scsi: avoid Non-NCQ command starvation
ata: libata-scsi: refactor ata_scsi_translate()
ata: ahci-xgene: Fix Wvoid-pointer-to-enum-cast warning
ata: ahci-imx: Fix Wvoid-pointer-to-enum-cast warning
ata: ahci-dwc: Simplify with scoped for each OF child loop
dt-bindings: ata: ahci-platform: Drop unnecessary select schema
ata: libata: Allow more quirks
ata: libata: Add libata.force parameter max_sec
ata: libata: Add support to parse equal sign in libata.force
ata: libata: Change libata.force to use the generic ATA_QUIRK_MAX_SEC quirk
ata: libata: Add ata_force_get_fe_for_dev() helper
ata: libata: Add ATA_QUIRK_MAX_SEC and convert all device quirks
ata: libata: avoid long timeouts on hot-unplugged SATA DAS
ata: libata-scsi: Remove superfluous local_irq_save()
|
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|
Linus Torvalds
|
311aa68319 |
RDMA v7.0 merge window
Usual smallish cycle:
- Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe
- Small driver improvements and minor bug fixes to hns, mlx5, rxe, mana,
mlx5, irdma
- Robusness improvements in completion processing for EFA
- New query_port_speed() verb to move past limited IBA defined speed steps
- Support for SG_GAPS in rts and many other small improvements
- Rare list corruption fix in iwcm
- Better support different page sizes in rxe
- Device memory support for mana
- Direct bio vec to kernel MR for use by NFS-RDMA
- QP rate limiting for bnxt_re
- Remote triggerable NULL pointer crash in siw
- DMA-buf exporter support for RDMA mmaps like doorbells
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Usual smallish cycle. The NFS biovec work to push it down into RDMA
instead of indirecting through a scatterlist is pretty nice to see,
been talked about for a long time now.
- Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe
- Small driver improvements and minor bug fixes to hns, mlx5, rxe,
mana, mlx5, irdma
- Robusness improvements in completion processing for EFA
- New query_port_speed() verb to move past limited IBA defined speed
steps
- Support for SG_GAPS in rts and many other small improvements
- Rare list corruption fix in iwcm
- Better support different page sizes in rxe
- Device memory support for mana
- Direct bio vec to kernel MR for use by NFS-RDMA
- QP rate limiting for bnxt_re
- Remote triggerable NULL pointer crash in siw
- DMA-buf exporter support for RDMA mmaps like doorbells"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (66 commits)
RDMA/mlx5: Implement DMABUF export ops
RDMA/uverbs: Add DMABUF object type and operations
RDMA/uverbs: Support external FD uobjects
RDMA/siw: Fix potential NULL pointer dereference in header processing
RDMA/umad: Reject negative data_len in ib_umad_write
IB/core: Extend rate limit support for RC QPs
RDMA/mlx5: Support rate limit only for Raw Packet QP
RDMA/bnxt_re: Report QP rate limit in debugfs
RDMA/bnxt_re: Report packet pacing capabilities when querying device
RDMA/bnxt_re: Add support for QP rate limiting
MAINTAINERS: Drop RDMA files from Hyper-V section
RDMA/uverbs: Add __GFP_NOWARN to ib_uverbs_unmarshall_recv() kmalloc
svcrdma: use bvec-based RDMA read/write API
RDMA/core: add rdma_rw_max_sge() helper for SQ sizing
RDMA/core: add MR support for bvec-based RDMA operations
RDMA/core: use IOVA-based DMA mapping for bvec RDMA operations
RDMA/core: add bio_vec based RDMA read/write API
RDMA/irdma: Use kvzalloc for paged memory DMA address array
RDMA/rxe: Fix race condition in QP timer handlers
RDMA/mana_ib: Add device‑memory support
...
|
||
|
Linus Torvalds
|
e812928be2 |
cxl changes for v7.0
- A set of commits that introduces cxl_memdev_attach and pave way for soft reserved handling, type2 accelerator enabling, and LSA 2.0 enabling. All these series require the endpoint driver to settle before continuing the memdev driver probe. dax/hmem, e820, resource: Defer Soft Reserved insertion until hmem is ready cxl/mem: Introduce cxl_memdev_attach for CXL-dependent operation cxl/mem: Drop @host argument to devm_cxl_add_memdev() cxl/mem: Convert devm_cxl_add_memdev() to scope-based-cleanup cxl/port: Arrange for always synchronous endpoint attach cxl/mem: Arrange for always-synchronous memdev attach cxl/mem: Fix devm_cxl_memdev_edac_release() confusion - A set to address CXL port error protocol handling and reporting. The large patch series was split into 3 parts. Part 1 and 2 are included here with part 3 coming later. Part 1 consists of a series of code refactoring to PCI AER sub-system that addresses CXL and also CXL RAS code to prepare for port error handling. Part 2 refactors the CXL code to move management of component registers to cxl_port objects to allow all CXL AER errors to be handled through the cxl_port hierarchy. Part 2: cxl/port: Move endpoint component register management to cxl_port cxl/port: Map Port RAS registers cxl/port: Move dport RAS setup to dport add time cxl/port: Move dport probe operations to a driver event cxl/port: Move decoder setup before dport creation cxl/port: Cleanup dport removal with a devres group cxl/port: Reduce number of @dport variables in cxl_port_add_dport() cxl/port: Cleanup handling of the nr_dports 0 -> 1 transition Part 1: cxl: Update RAS handler interfaces to also support CXL Ports cxl/mem: Clarify @host for devm_cxl_add_nvdimm() PCI/AER: Update struct aer_err_info with kernel-doc formatting PCI/AER: Report CXL or PCIe bus type in AER trace logging PCI/AER: Use guard() in cxl_rch_handle_error_iter() PCI/AER: Move CXL RCH error handling to aer_cxl_rch.c PCI/AER: Update is_internal_error() to be non-static is_aer_internal_error() PCI/AER: Export pci_aer_unmask_internal_errors() cxl/pci: Move CXL driver's RCH error handling into core/ras_rch.c PCI/AER: Replace PCIEAER_CXL symbol with CXL_RAS cxl/pci: Remove CXL VH handling in CONFIG_PCIEAER_CXL conditional blocks from core/pci.c PCI: Replace cxl_error_is_native() with pcie_aer_is_native() cxl/pci: Remove unnecessary CXL RCH handling helper functions cxl/pci: Remove unnecessary CXL Endpoint handling helper functions PCI: Introduce pcie_is_cxl() PCI: Update CXL DVSEC definitions PCI: Move CXL DVSEC definitions into uapi/linux/pci_regs.h - A set of patches to provide AMD Zen5 platform address translation for CXL using ACPI PRMT. Set includes a conventions document to explain why this is needed and how it's implemented. cxl: Disable HPA/SPA translation handlers for Normalized Addressing cxl/region: Factor out code into cxl_region_setup_poison() cxl/atl: Lock decoders that need address translation cxl: Enable AMD Zen5 address translation using ACPI PRMT cxl/acpi: Prepare use of EFI runtime services cxl: Introduce callback for HPA address ranges translation cxl/region: Use region data to get the root decoder cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos() cxl/region: Separate region parameter setup and region construction cxl: Simplify cxl_root_ops allocation and handling cxl/region: Store HPA range in struct cxl_region cxl/region: Store root decoder in struct cxl_region cxl/region: Rename misleading variable name @hpa to @hpa_range Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement cxl, doc: Moving conventions in separate files cxl, doc: Remove isonum.txt inclusion - A set of misc CXL patches of fixes, cleanups, and updates. Including CXL address translation for unaligned MOD3 regions. cxl: Fix premature commit_end increment on decoder commit failure cxl/region: Use do_div() for 64-bit modulo operation cxl/region: Translate HPA to DPA and memdev in unaligned regions cxl/region: Translate DPA->HPA in unaligned MOD3 regions cxl/core: Fix cxl_dport debugfs EINJ entries cxl/acpi: Remove cxl_acpi_set_cache_size() cxl/hdm: Fix newline character in dev_err() messages cxl/pci: Remove outdated FIXME comment and BUILD_BUG_ON Documentation/driver-api/cxl: device hotplug section Documentation/driver-api/cxl: BIOS/EFI expectation update -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5DAy15EJMCV1R6v9YGjFFmlTOEoFAmmOFXcACgkQYGjFFmlT OEojaxAApQJFLyX1MkPbhtm6j6GRzzEAEWTBX2XsmliZf1JhfahsNMWI69kO33rm LddF+nyZNEl/foyHgUaxVzlQwqWuihyp7Qk2djXnMzLsuCAsWhPbB9j0RgJUN8h5 N4U76AmOdmhLlXH4CCqoW2jNy0OjxNdgp1FtTHv7VO7RxgRE9MFJRkLulKxB03wy t6lRZXPofEFcHen40DlYRtW26vy1BYUO0dng2f16DxWrb1ztdACH/zVqCJJtdoFc FAT5EaQCeRYZ9Yz4dONw3DcUjYlG6NcRN9FWNiptBn1Pb7pUX55Le8lfD3qZg0an m3lWRs1T/lGz7pWmz4GPUKDwGFCEqLqd4oSz5v+dFR3JJxjJpRzKa19y5TfqK/LF diqNZsDD9gCXE1HXzNr1YcbllpU2cPRPf58gWG9bLmG5xUUmScib8LoTMfgcCJW5 SlC6kf7BFLkJfDTcFaILc/UANeZaLGhrV0vyJntfGyT5EqKOcfjQEvrZvofA8mef bdxt0IRDW4D+7kkcuR33OipTVUFG3ban8yYq4zXD64dmeHF76gwdJm3nyXsqdtpc IYIIhz0W6pbTKjJ2fy1rZcTac1ZaALstyaF4bYWIjyF3NylPM8tDi48DFr+DGgeX xkFs2B9p5vY5Cq73gCmSWsi3PBPTjWzeRp7YZrV6VoBd9uqewUs= =blFQ -----END PGP SIGNATURE----- Merge tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull CXL updates from Dave Jiang: - Introduce cxl_memdev_attach and pave way for soft reserved handling, type2 accelerator enabling, and LSA 2.0 enabling. All these series require the endpoint driver to settle before continuing the memdev driver probe. - Address CXL port error protocol handling and reporting. The large patch series was split into three parts. The first two parts are included here with the final part coming later. The first part consists of a series of code refactoring to PCI AER sub-system that addresses CXL and also CXL RAS code to prepare for port error handling. The second part refactors the CXL code to move management of component registers to cxl_port objects to allow all CXL AER errors to be handled through the cxl_port hierarchy. - Provide AMD Zen5 platform address translation for CXL using ACPI PRMT. This includes a conventions document to explain why this is needed and how it's implemented. - Misc CXL patches of fixes, cleanups, and updates. Including CXL address translation for unaligned MOD3 regions. [ TLA service: CXL is "Compute Express Link" ] * tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (59 commits) cxl: Disable HPA/SPA translation handlers for Normalized Addressing cxl/region: Factor out code into cxl_region_setup_poison() cxl/atl: Lock decoders that need address translation cxl: Enable AMD Zen5 address translation using ACPI PRMT cxl/acpi: Prepare use of EFI runtime services cxl: Introduce callback for HPA address ranges translation cxl/region: Use region data to get the root decoder cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos() cxl/region: Separate region parameter setup and region construction cxl: Simplify cxl_root_ops allocation and handling cxl/region: Store HPA range in struct cxl_region cxl/region: Store root decoder in struct cxl_region cxl/region: Rename misleading variable name @hpa to @hpa_range Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement cxl, doc: Moving conventions in separate files cxl, doc: Remove isonum.txt inclusion cxl/port: Unify endpoint and switch port lookup cxl/port: Move endpoint component register management to cxl_port cxl/port: Map Port RAS registers cxl/port: Move dport RAS setup to dport add time ... |
||
Matt Roper
|
1ff4b1730c |
drm/xe: Stop applying Wa_16018737384 from Xe3 onward
Wa_16018737384 is one of the rare cases where the hardware teams mark a workaround as "driver change required" rather than "permanent/temporary workaround" in the internal workaround database, signifying that the implementation details of the workaround should just be considered standard programming instructions on all platforms going forward. Cases like this are the only time that using XE_RTP_END_VERSION_UNDEFINED as an upper bound for a workaround's IP range is warranted and correct. However in this specific case, the register bit in question (0xE4F0[1]) simply no longer exists in hardware from Xe3 onward. Trying to write to that bit on Xe3 or Xe3p platforms is harmless and just doesn't have any effect, but it's possible that the register bit could get repurposed to control something else down the road on future platforms. To avoid any surprises in the future we should replace the unbounded upper bound in our RTP table with a value that accurately reflects that Wa_16018737384 can only apply to Xe2 platforms. Bspec: 56849 Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com> Link: https://patch.msgid.link/20260211234735.620087-2-matthew.d.roper@intel.com Signed-off-by: Matt Roper <matthew.d.roper@intel.com> |
||
|
Linus Torvalds
|
cebcffe666 |
VFIO updates for v7.0-rc1
- Update outdated mdev comment referencing the renamed
mdev_type_add() function. (Julia Lawall)
- Introduce selftest support for IOMMU mapping of PCI MMIO BARs.
(Alex Mastro)
- Relax selftest assertion relative to differences in huge page
handling between legacy (v1) TYPE1 IOMMU mapping behavior and
the compatibility mode supported by IOMMUFD. (David Matlack)
- Reintroduce memory poison handling support for non-struct-page-
backed memory in the nvgrace-gpu variant driver. (Ankit Agrawal)
- Replace dma_buf_phys_vec with phys_vec to avoid duplicate
structure and semantics. (Leon Romanovsky)
- Add missing upstream bridge locking across PCI function reset,
resolving an assertion failure when secondary bus reset is used
to provide that reset. (Anthony Pighin)
- Fixes to hisi_acc vfio-pci variant driver to resolve corner case
issues related to resets, repeated migration, and error injection
scenarios. (Longfang Liu, Weili Qian)
- Restrict vfio selftest builds to arm64 and x86_64, resolving
compiler warnings on 32-bit archs. (Ted Logan)
- Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
stepped up. (Ioana Ciornei)
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Merge tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
"A small cycle with the bulk in selftests and reintroducing poison
handling in the nvgrace-gpu driver. The rest are fixes, cleanups, and
some dmabuf structure consolidation.
- Update outdated mdev comment referencing the renamed
mdev_type_add() function (Julia Lawall)
- Introduce selftest support for IOMMU mapping of PCI MMIO BARs (Alex
Mastro)
- Relax selftest assertion relative to differences in huge page
handling between legacy (v1) TYPE1 IOMMU mapping behavior and the
compatibility mode supported by IOMMUFD (David Matlack)
- Reintroduce memory poison handling support for non-struct-page-
backed memory in the nvgrace-gpu variant driver (Ankit Agrawal)
- Replace dma_buf_phys_vec with phys_vec to avoid duplicate structure
and semantics (Leon Romanovsky)
- Add missing upstream bridge locking across PCI function reset,
resolving an assertion failure when secondary bus reset is used to
provide that reset (Anthony Pighin)
- Fixes to hisi_acc vfio-pci variant driver to resolve corner case
issues related to resets, repeated migration, and error injection
scenarios (Longfang Liu, Weili Qian)
- Restrict vfio selftest builds to arm64 and x86_64, resolving
compiler warnings on 32-bit archs (Ted Logan)
- Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
stepped up (Ioana Ciornei)"
* tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio:
vfio/fsl-mc: add myself as maintainer
vfio: selftests: only build tests on arm64 and x86_64
hisi_acc_vfio_pci: fix the queue parameter anomaly issue
hisi_acc_vfio_pci: resolve duplicate migration states
hisi_acc_vfio_pci: update status after RAS error
hisi_acc_vfio_pci: fix VF reset timeout issue
vfio/pci: Lock upstream bridge for vfio_pci_core_disable()
types: reuse common phys_vec type instead of DMABUF open‑coded variant
vfio/nvgrace-gpu: register device memory for poison handling
mm: add stubs for PFNMAP memory failure registration functions
vfio: selftests: Drop IOMMU mapping size assertions for VFIO_TYPE1_IOMMU
vfio: selftests: Add vfio_dma_mapping_mmio_test
vfio: selftests: Align BAR mmaps for efficient IOMMU mapping
vfio: selftests: Centralize IOMMU mode name definitions
vfio/mdev: update outdated comment
|
||
Paulo Alcantara
|
4c91b67f87 |
smb: client: fix data corruption due to racy lease checks
Customer reported data corruption in some of their files. It turned out the client would end up calling cacheless IO functions while having RHW lease, bypassing the pagecache and then leaving gaps in the file while writing to it. It was related to concurrent opens changing the lease state while having writes in flight. Lease breaks and re-opens due to reconnect could also cause same issue. Fix this by serialising the lease updates with cifsInodeInfo::open_file_lock. When handling oplock break, make sure to use the downgraded oplock value rather than one in cifsInodeinfo as it could be changed concurrently. Reported-by: Frank Sorenson <sorenson@redhat.com> Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Reviewed-by: David Howells <dhowells@redhat.com> Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
||
Kees Cook
|
90627a1e08 |
lib/group_cpus: handle const qualifier from clusters allocation type
In preparation for making the kmalloc family of allocators type aware, we need to make sure that the returned type from the allocation matches the type of the variable being assigned. (Before, the allocator would always return "void *", which can be implicitly cast to any pointer type.) The assigned type is "const struct cpumask **", but the returned type, while matching, is not const qualified. To get them exactly matching, just use the dereferenced pointer for the sizeof(). Link: https://lkml.kernel.org/r/20260206222010.work.349-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> Cc: Wangyang Guo <wangyang.guo@intel.com> Cc: Thomas Gleixner <tglx@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Ran Xiaokai
|
f7a553b813 |
kho: remove unnecessary WARN_ON(err) in kho_populate()
The following pr_warn() provides detailed error and location information, WARN_ON(err) adds no additional debugging value, so remove the redundant WARN_ON() call. Link: https://lkml.kernel.org/r/20260212111146.210086-3-ranxiaokai627@163.com Signed-off-by: Ran Xiaokai <ran.xiaokai@zte.com.cn> Reviewed-by: Pratyush Yadav <pratyush@kernel.org> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Alexander Graf <graf@amazon.com> Cc: Mike Rapoport <rppt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Ran Xiaokai
|
34df6c4734 |
kho: fix missing early_memunmap() call in kho_populate()
Patch series "two fixes in kho_populate()", v3.
This patch (of 2):
kho_populate() returns without calling early_memunmap() on success path,
this will cause early ioremap virtual address space leak.
Link: https://lkml.kernel.org/r/20260212111146.210086-1-ranxiaokai627@163.com
Link: https://lkml.kernel.org/r/20260212111146.210086-2-ranxiaokai627@163.com
Fixes:
|
||
Seongjun Hong
|
55f8b4518d |
scripts/gdb: implement x86_page_ops in mm.py
Implement all member functions of x86_page_ops strictly following the logic of aarch64_page_ops. This includes full support for SPARSEMEM and standard page translation functions. This fixes compatibility with 'lx-' commands on x86_64, preventing AttributeErrors when using lx-pfn_to_page and others. Link: https://lkml.kernel.org/r/20260202034241.649268-1-hsj0512@snu.ac.kr Signed-off-by: Seongjun Hong <hsj0512@snu.ac.kr> Cc: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
zhouwenhao
|
5ed4b6b37c |
objpool: fix the overestimation of object pooling metadata size
objpool uses struct objpool_head to store metadata information, and its
cpu_slots member points to an array of pointers that store the addresses
of the percpu ring arrays. However, the memory size allocated during the
initialization of cpu_slots is nr_cpu_ids * sizeof(struct objpool_slot).
On a 64-bit machine, the size of struct objpool_slot is 16 bytes, which is
twice the size of the actual pointer required, and the extra memory is
never be used, resulting in a waste of memory. Therefore, the memory size
required for cpu_slots needs to be corrected.
Link: https://lkml.kernel.org/r/20260202132846.68257-1-zhouwenhao7600@gmail.com
Fixes:
|
||
Aristeu Rozanski
|
b24335521d |
selftests/memfd: use IPC semaphore instead of SIGSTOP/SIGCONT
selftests/memfd: use IPC semaphore instead of SIGSTOP/SIGCONT
In order to synchronize new processes to test inheritance of memfd_noexec
sysctl, memfd_test sets up the sysctl with a value before creating the new
process. The new process then sends itself a SIGSTOP in order to wait for
the parent to flip the sysctl value and send a SIGCONT signal.
This would work as intended if it wasn't the fact that the new process is
being created with CLONE_NEWPID, which creates a new PID namespace and the
new process has PID 1 in this namespace. There're restrictions on sending
signals to PID 1 and, although it's relaxed for other than root PID
namespace, it's biting us here. In this specific case the SIGSTOP sent by
the new process is ignored (no error to kill() is returned) and it never
stops its execution. This is usually not noticiable as the parent usually
manages to set the new sysctl value before the child has a chance to run
and the test succeeds. But if you run the test in a loop, it eventually
reproduces:
while [ 1 ]; do ./memfd_test >log 2>&1 || break; done; cat log
So this patch replaces the SIGSTOP/SIGCONT synchronization with IPC
semaphore.
Link: https://lkml.kernel.org/r/a7776389-b3d6-4b18-b438-0b0e3ed1fd3b@work
Fixes:
|
||
Arnd Bergmann
|
9333980c23 |
delayacct: fix build regression on accounting tool
The accounting tool was modified for the original ABI using a custom
'timespec64' type in linux/taskstats.h, which I changed to use the regular
__kernel_timespec type, causing a build failure:
getdelays.c:202:45: warning: 'struct timespec64' declared inside parameter list will not be visible outside of this definition or declaration
202 | static const char *format_timespec64(struct timespec64 *ts)
| ^~~~~~~~~~
Change the tool to match the updated header.
Link: https://lkml.kernel.org/r/20260210103427.2984963-1-arnd@kernel.org
Fixes:
|
||
Mikhail Gavrilov
|
ac1ea21959 |
mm/page_alloc: clear page->private in free_pages_prepare()
Several subsystems (slub, shmem, ttm, etc.) use page->private but don't
clear it before freeing pages. When these pages are later allocated as
high-order pages and split via split_page(), tail pages retain stale
page->private values.
This causes a use-after-free in the swap subsystem. The swap code uses
page->private to track swap count continuations, assuming freshly
allocated pages have page->private == 0. When stale values are present,
swap_count_continued() incorrectly assumes the continuation list is valid
and iterates over uninitialized page->lru containing LIST_POISON values,
causing a crash:
KASAN: maybe wild-memory-access in range [0xdead000000000100-0xdead000000000107]
RIP: 0010:__do_sys_swapoff+0x1151/0x1860
Fix this by clearing page->private in free_pages_prepare(), ensuring all
freed pages have clean state regardless of previous use.
Link: https://lkml.kernel.org/r/20260207173615.146159-1-mikhail.v.gavrilov@gmail.com
Fixes:
|
||
|
Linus Torvalds
|
d4a379a52c |
SCSI misc on 20260212
Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted cleanups and fixes. The biggest core change is the massive code motion in the sd driver to remove forward declarations and the most significant change is to enumify the queuecommand return. Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> -----BEGIN PGP SIGNATURE----- iLgEABMIAGAWIQTnYEDbdso9F2cI+arnQslM7pishQUCaY4ljBsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMSwyLDImHGphbWVzLmJvdHRvbWxleUBoYW5zZW5wYXJ0bmVy c2hpcC5jb20ACgkQ50LJTO6YrIWFlwEAr9nc1ntxH4UNPgFCVjKyAOa5IE+p5o5C 2lwQIufcihEBAORvI9KO6AoEK6v9TmMKZXoyVsDRFe79fQE5NwCjfAA3 =My8f -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted cleanups and fixes. The biggest core change is the massive code motion in the sd driver to remove forward declarations and the most significant change is to enumify the queuecommand return" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits) scsi: csiostor: Fix dereference of null pointer rn scsi: buslogic: Reduce stack usage scsi: ufs: host: mediatek: Require CONFIG_PM scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event scsi: smartpqi: Fix memory leak in pqi_report_phys_luns() scsi: mpi3mr: Make driver probing asynchronous scsi: ufs: core: Flush exception handling work when RPM level is zero scsi: efct: Use IRQF_ONESHOT and default primary handler scsi: ufs: core: Use a host-wide tagset in SDB mode scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users scsi: mpi3mr: Driver version update to 8.17.0.3.50 scsi: mpi3mr: Fixed the W=1 compilation warning scsi: mpi3mr: Record and report controller firmware faults scsi: mpi3mr: Update MPI Headers to revision 39 scsi: mpi3mr: Use negotiated link rate from DevicePage0 scsi: mpi3mr: Avoid redundant diag-fault resets scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context scsi: mpi3mr: Add module parameter to control threaded IRQ polling ... |
||
Miaohe Lin
|
d51b5076c7 |
selftests/mm: add memory failure dirty pagecache test
This patch adds a new testcase to validate memory failure handling for dirty pagecache. This performs similar operations as clean pagecaches except fsync() is not used to keep pages dirty. This test helps ensure that memory failure handling for dirty pagecache works correctly, including proper SIGBUS delivery, page isolation, and recovery paths. Link: https://lkml.kernel.org/r/20260206031639.2707102-4-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: David Hildenbrand <david@kernel.org> Cc: kernel test robot <lkp@intel.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Miaohe Lin
|
12e8a2fae3 |
selftests/mm: add memory failure clean pagecache test
This patch adds a new testcase to validate memory failure handling for clean pagecache. This test performs similar operations as anonymous pages except allocating memory using mmap() with a file fd. This test helps ensure that memory failure handling for clean pagecache works correctly, including unchanged page content, page isolation, and recovery paths. Link: https://lkml.kernel.org/r/20260206031639.2707102-3-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202601221142.mDWA1ucw-lkp@intel.com/ Cc: David Hildenbrand <david@kernel.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Miaohe Lin
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ff4ef2fbd1 |
selftests/mm: add memory failure anonymous page test
Patch series "selftests/mm: add memory failure selftests", v4. Introduce selftests to validate the functionality of memory failure. These tests help ensure that memory failure handling for anonymous pages, pagecaches pages works correctly, including proper SIGBUS delivery to user processes, page isolation, and recovery paths. Currently madvise syscall is used to inject memory failures. And only anonymous pages and pagecaches are tested. More test scenarios, e.g. hugetlb, shmem, thp, will be added. Also more memory failure injecting methods will be supported, e.g. APEI Error INJection, if required. This patch (of 3): This patch adds a new kselftest to validate memory failure handling for anonymous pages. The test performs the following operations: 1. Allocates anonymous pages using mmap(). 2. Injects memory failure via madvise syscall. 3. Verifies expected error handling behavior. 4. Unpoison memory. This test helps ensure that memory failure handling for anonymous pages works correctly, including proper SIGBUS delivery to user processes, page isolation and recovery paths. Link: https://lkml.kernel.org/r/20260206031639.2707102-1-linmiaohe@huawei.com Link: https://lkml.kernel.org/r/20260206031639.2707102-2-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: David Hildenbrand <david@kernel.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: kernel test robot <lkp@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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a67fe41e21 |
mm: rmap: support batched unmapping for file large folios
Similar to folio_referenced_one(), we can apply batched unmapping for file large folios to optimize the performance of file folios reclamation. Barry previously implemented batched unmapping for lazyfree anonymous large folios[1] and did not further optimize anonymous large folios or file-backed large folios at that stage. As for file-backed large folios, the batched unmapping support is relatively straightforward, as we only need to clear the consecutive (present) PTE entries for file-backed large folios. Note that it's not ready to support batched unmapping for uffd case, so let's still fallback to per-page unmapping for the uffd case. Performance testing: Allocate 10G clean file-backed folios by mmap() in a memory cgroup, and try to reclaim 8G file-backed folios via the memory.reclaim interface. I can observe 75% performance improvement on my Arm64 32-core server (and 50%+ improvement on my X86 machine) with this patch. W/o patch: real 0m1.018s user 0m0.000s sys 0m1.018s W/ patch: real 0m0.249s user 0m0.000s sys 0m0.249s [1] https://lore.kernel.org/all/20250214093015.51024-4-21cnbao@gmail.com/T/#u Link: https://lkml.kernel.org/r/b53a16f67c93a3fe65e78092069ad135edf00eff.1770645603.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Acked-by: Barry Song <baohua@kernel.org> Reviewed-by: Harry Yoo <harry.yoo@oracle.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Jann Horn <jannh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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07f440c23a |
arm64: mm: implement the architecture-specific clear_flush_young_ptes()
Implement the Arm64 architecture-specific clear_flush_young_ptes() to enable batched checking of young flags and TLB flushing, improving performance during large folio reclamation. Performance testing: Allocate 10G clean file-backed folios by mmap() in a memory cgroup, and try to reclaim 8G file-backed folios via the memory.reclaim interface. I can observe 33% performance improvement on my Arm64 32-core server (and 10%+ improvement on my X86 machine). Meanwhile, the hotspot folio_check_references() dropped from approximately 35% to around 5%. W/o patchset: real 0m1.518s user 0m0.000s sys 0m1.518s W/ patchset: real 0m1.018s user 0m0.000s sys 0m1.018s Link: https://lkml.kernel.org/r/ce749fbae3e900e733fa104a16fcb3ca9fe4f9bd.1770645603.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Barry Song <baohua@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Harry Yoo <harry.yoo@oracle.com> Cc: Jann Horn <jannh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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6f0e114217 |
arm64: mm: support batch clearing of the young flag for large folios
Currently, contpte_ptep_test_and_clear_young() and contpte_ptep_clear_flush_young() only clear the young flag and flush TLBs for PTEs within the contiguous range. To support batch PTE operations for other sized large folios in the following patches, adding a new parameter to specify the number of PTEs that map consecutive pages of the same large folio in a single VMA and a single page table. While we are at it, rename the functions to maintain consistency with other contpte_*() functions. Link: https://lkml.kernel.org/r/5644250dcc0417278c266ad37118d27f541fd052.1770645603.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Barry Song <baohua@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Harry Yoo <harry.yoo@oracle.com> Cc: Jann Horn <jannh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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67d59bddfc |
arm64: mm: factor out the address and ptep alignment into a new helper
Factor out the contpte block's address and ptep alignment into a new helper, and will be reused in the following patch. No functional changes. Link: https://lkml.kernel.org/r/8076d12cb244b2d9e91119b44dc6d5e4ad9c00af.1770645603.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Cc: Barry Song <baohua@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Harry Yoo <harry.yoo@oracle.com> Cc: Jann Horn <jannh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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52e054f718 |
mm: rmap: support batched checks of the references for large folios
Patch series "support batch checking of references and unmapping for large folios", v6. Currently, folio_referenced_one() always checks the young flag for each PTE sequentially, which is inefficient for large folios. This inefficiency is especially noticeable when reclaiming clean file-backed large folios, where folio_referenced() is observed as a significant performance hotspot. Moreover, on Arm architecture, which supports contiguous PTEs, there is already an optimization to clear the young flags for PTEs within a contiguous range. However, this is not sufficient. We can extend this to perform batched operations for the entire large folio (which might exceed the contiguous range: CONT_PTE_SIZE). Similar to folio_referenced_one(), we can also apply batched unmapping for large file folios to optimize the performance of file folio reclamation. By supporting batched checking of the young flags, flushing TLB entries, and unmapping, I can observed a significant performance improvements in my performance tests for file folios reclamation. Please check the performance data in the commit message of each patch. This patch (of 5): Currently, folio_referenced_one() always checks the young flag for each PTE sequentially, which is inefficient for large folios. This inefficiency is especially noticeable when reclaiming clean file-backed large folios, where folio_referenced() is observed as a significant performance hotspot. Moreover, on Arm64 architecture, which supports contiguous PTEs, there is already an optimization to clear the young flags for PTEs within a contiguous range. However, this is not sufficient. We can extend this to perform batched operations for the entire large folio (which might exceed the contiguous range: CONT_PTE_SIZE). Introduce a new API: clear_flush_young_ptes() to facilitate batched checking of the young flags and flushing TLB entries, thereby improving performance during large folio reclamation. And it will be overridden by the architecture that implements a more efficient batch operation in the following patches. While we are at it, rename ptep_clear_flush_young_notify() to clear_flush_young_ptes_notify() to indicate that this is a batch operation. Link: https://lkml.kernel.org/r/cover.1770645603.git.baolin.wang@linux.alibaba.com Link: https://lkml.kernel.org/r/12132694536834262062d1fb304f8f8a064b6750.1770645603.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Harry Yoo <harry.yoo@oracle.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Jann Horn <jannh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Cc: Barry Song <baohua@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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f615cc9264 |
tools/testing/vma: add VMA userland tests for VMA flag functions
Now we have the capability to test the new helpers for the bitmap VMA flags in userland, do so. We also update the Makefile such that both VMA (and while we're here) mm_struct flag sizes can be customised on build. We default to 128-bit to enable testing of flags above word size even on 64-bit systems. We add userland tests to ensure that we do not regress VMA flag behaviour with the introduction when using bitmap VMA flags, nor accidentally introduce unexpected results due to for instance higher bit values not being correctly cleared/set. As part of this change, make __mk_vma_flags() a custom function so we can handle specifying invalid VMA bits. This is purposeful so we can have the VMA tests work at lower and higher number of VMA flags without having to duplicate code too much. Link: https://lkml.kernel.org/r/7fe6afe9c8c61e4d3cfc9a2d50a5d24da8528e68.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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a1f0dacaab |
tools/testing/vma: separate out vma_internal.h into logical headers
The vma_internal.h file is becoming entirely unmanageable. It combines duplicated kernel implementation logic that needs to be kept in-sync with the kernel, stubbed out declarations that we simply ignore for testing purposes and custom logic added to aid testing. If we separate each of the three things into separate headers it makes things far more manageable, so do so: * include/stubs.h contains the stubbed declarations, * include/dup.h contains the duplicated kernel declarations, and * include/custom.h contains declarations customised for testing. [lorenzo.stoakes@oracle.com: avoid a duplicate struct define] Link: https://lkml.kernel.org/r/1e032732-61c3-485c-9aa7-6a09016fefc1@lucifer.local Link: https://lkml.kernel.org/r/dd57baf5b5986cb96a167150ac712cbe804b63ee.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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6aacab308a |
tools/testing/vma: separate VMA userland tests into separate files
So far the userland VMA tests have been established as a rough expression of what's been possible. Adapt it into a more usable form by separating out tests and shared helper functions. Since we test functions that are declared statically in mm/vma.c, we make use of the trick of #include'ing kernel C files directly. In order for the tests to continue to function, we must therefore also this way into the tests/ directory. We try to keep as much shared logic actually modularised into a separate compilation unit in shared.c, however the merge_existing() and attach_vma() helpers rely on statically declared mm/vma.c functions so these must be declared in main.c. Link: https://lkml.kernel.org/r/a0455ccfe4fdcd1c962c64f76304f612e5662a4e.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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53f1d93644 |
mm: make vm_area_desc utilise vma_flags_t only
Now we have eliminated all uses of vm_area_desc->vm_flags, eliminate this field, and have mmap_prepare users utilise the vma_flags_t vm_area_desc->vma_flags field only. As part of this change we alter is_shared_maywrite() to accept a vma_flags_t parameter, and introduce is_shared_maywrite_vm_flags() for use with legacy vm_flags_t flags. We also update struct mmap_state to add a union between vma_flags and vm_flags temporarily until the mmap logic is also converted to using vma_flags_t. Also update the VMA userland tests to reflect this change. Link: https://lkml.kernel.org/r/fd2a2938b246b4505321954062b1caba7acfc77a.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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5bd2c0650a |
mm: update all remaining mmap_prepare users to use vma_flags_t
We will be shortly removing the vm_flags_t field from vm_area_desc so we need to update all mmap_prepare users to only use the dessc->vma_flags field. This patch achieves that and makes all ancillary changes required to make this possible. This lays the groundwork for future work to eliminate the use of vm_flags_t in vm_area_desc altogether and more broadly throughout the kernel. While we're here, we take the opportunity to replace VM_REMAP_FLAGS with VMA_REMAP_FLAGS, the vma_flags_t equivalent. No functional changes intended. Link: https://lkml.kernel.org/r/fb1f55323799f09fe6a36865b31550c9ec67c225.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: Damien Le Moal <dlemoal@kernel.org> [zonefs] Acked-by: "Darrick J. Wong" <djwong@kernel.org> Acked-by: Pedro Falcato <pfalcato@suse.de> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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590d356aa4 |
mm: update shmem_[kernel]_file_*() functions to use vma_flags_t
In order to be able to use only vma_flags_t in vm_area_desc we must adjust shmem file setup functions to operate in terms of vma_flags_t rather than vm_flags_t. This patch makes this change and updates all callers to use the new functions. No functional changes intended. [akpm@linux-foundation.org: comment fixes, per Baolin] Link: https://lkml.kernel.org/r/736febd280eb484d79cef5cf55b8a6f79ad832d2.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
|
fd3196ee9c |
mm: update secretmem to use VMA flags on mmap_prepare
This patch updates secretmem to use the new vma_flags_t type which will soon supersede vm_flags_t altogether. In order to make this change we also have to update mlock_future_ok(), we replace the vm_flags_t parameter with a simple boolean is_vma_locked one, which also simplifies the invocation here. This is laying the groundwork for eliminating the vm_flags_t in vm_area_desc and more broadly throughout the kernel. No functional changes intended. [lorenzo.stoakes@oracle.com: fix check_brk_limits(), per Chris] Link: https://lkml.kernel.org/r/3aab9ab1-74b4-405e-9efb-08fc2500c06e@lucifer.local Link: https://lkml.kernel.org/r/a243a09b0a5d0581e963d696de1735f61f5b2075.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
|
097e8db5e2 |
mm: update hugetlbfs to use VMA flags on mmap_prepare
In order to update all mmap_prepare users to utilising the new VMA flags type vma_flags_t and associated helper functions, we start by updating hugetlbfs which has a lot of additional logic that requires updating to make this change. This is laying the groundwork for eliminating the vm_flags_t from struct vm_area_desc and using vma_flags_t only, which further lays the ground for removing the deprecated vm_flags_t type altogether. No functional changes intended. Link: https://lkml.kernel.org/r/9226bec80c9aa3447cc2b83354f733841dba8a50.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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bae0ba7c7c |
mm: add basic VMA flag operation helper functions
Now we have the mk_vma_flags() macro helper which permits easy
specification of any number of VMA flags, add helper functions which
operate with vma_flags_t parameters.
This patch provides vma_flags_test[_mask](), vma_flags_set[_mask]() and
vma_flags_clear[_mask]() respectively testing, setting and clearing flags
with the _mask variants accepting vma_flag_t parameters, and the non-mask
variants implemented as macros which accept a list of flags.
This allows us to trivially test/set/clear aggregate VMA flag values as
necessary, for instance:
if (vma_flags_test(&flags, VMA_READ_BIT, VMA_WRITE_BIT))
goto readwrite;
vma_flags_set(&flags, VMA_READ_BIT, VMA_WRITE_BIT);
vma_flags_clear(&flags, VMA_READ_BIT, VMA_WRITE_BIT);
We also add a function for testing that ALL flags are set for convenience,
e.g.:
if (vma_flags_test_all(&flags, VMA_READ_BIT, VMA_MAYREAD_BIT)) {
/* Both READ and MAYREAD flags set */
...
}
The compiler generates optimal assembly for each such that they behave as
if the caller were setting the bitmap flags manually.
This is important for e.g. drivers which manipulate flag values rather
than a VMA's specific flag values.
We also add helpers for testing, setting and clearing flags for VMA's and
VMA descriptors to reduce boilerplate.
Also add the EMPTY_VMA_FLAGS define to aid initialisation of empty flags.
Finally, update the userland VMA tests to add the helpers there so they
can be utilised as part of userland testing.
Link: https://lkml.kernel.org/r/885d4897d67a6a57c0b07fa182a7055ad752df11.1769097829.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Pedro Falcato <pfalcato@suse.de>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Yury Norov <ynorov@nvidia.com>
Cc: Chris Mason <clm@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Lorenzo Stoakes
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21c8a5bae7 |
tools: bitmap: add missing bitmap_[subset(), andnot()]
The bitmap_subset() and bitmap_andnot() functions are not present in the tools version of include/linux/bitmap.h, so add them as subsequent patches implement test code that requires them. We also add the missing __bitmap_subset() to tools/lib/bitmap.c. Link: https://lkml.kernel.org/r/0fd0d4ec868297f522003cb4b5898b53b498805b.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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1c628004e0 |
mm: add mk_vma_flags() bitmap flag macro helper
This patch introduces the mk_vma_flags() macro helper to allow easy
manipulation of VMA flags utilising the new bitmap representation
implemented of VMA flags defined by the vma_flags_t type.
It is a variadic macro which provides a bitwise-or'd representation of all
of each individual VMA flag specified.
Note that, while we maintain VM_xxx flags for backwards compatibility
until the conversion is complete, we define VMA flags of type vma_flag_t
using VMA_xxx_BIT to avoid confusing the two.
This helper macro therefore can be used thusly:
vma_flags_t flags = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT);
Testing has demonstrated that the compiler optimises this code such that
it generates the same assembly utilising this macro as it does if the
flags were specified manually, for instance:
vma_flags_t get_flags(void)
{
return mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT);
}
Generates the same code as:
vma_flags_t get_flags(void)
{
vma_flags_t flags;
vma_flags_clear_all(&flags);
vma_flag_set(&flags, VMA_READ_BIT);
vma_flag_set(&flags, VMA_WRITE_BIT);
vma_flag_set(&flags, VMA_EXEC_BIT);
return flags;
}
And:
vma_flags_t get_flags(void)
{
vma_flags_t flags;
unsigned long *bitmap = ACCESS_PRIVATE(&flags, __vma_flags);
*bitmap = 1UL << (__force int)VMA_READ_BIT;
*bitmap |= 1UL << (__force int)VMA_WRITE_BIT;
*bitmap |= 1UL << (__force int)VMA_EXEC_BIT;
return flags;
}
That is:
get_flags:
movl $7, %eax
ret
Link: https://lkml.kernel.org/r/fde00df6ff7fb8c4b42cc0defa5a4924c7a1943a.1769097829.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Pedro Falcato <pfalcato@suse.de>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Yury Norov <ynorov@nvidia.com>
Cc: Chris Mason <clm@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Lorenzo Stoakes
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e388d31257 |
mm: rename vma_flag_test/set_atomic() to vma_test/set_atomic_flag()
In order to stay consistent between functions which manipulate a vm_flags_t argument of the form of vma_flags_...() and those which manipulate a VMA (in this case the flags field of a VMA), rename vma_flag_[test/set]_atomic() to vma_[test/set]_atomic_flag(). This lays the groundwork for adding VMA flag manipulation functions in a subsequent commit. Link: https://lkml.kernel.org/r/033dcf12e819dee5064582bced9b12ea346d1607.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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a30de4c6b7 |
mm/vma: remove __private sparse decoration from vma_flags_t
Patch series "mm: add bitmap VMA flag helpers and convert all mmap_prepare
to use them", v2.
We introduced the bitmap VMA type vma_flags_t in the aptly named commit
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Liam R. Howlett
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a8700d42b0 |
mm: use unmap_desc struct for freeing page tables
Pass through the unmap_desc to free_pgtables() because it almost has everything necessary and is already on the stack. Updates testing code as necessary. No functional changes intended. [Liam.Howlett@oracle.com: fix up unmap desc use on exit_mmap()] Link: https://lkml.kernel.org/r/20260210214214.364856-1-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20260121164946.2093480-12-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Baoquan He <bhe@redhat.com> Cc: Barry Song <baohua@kernel.org> Cc: Chris Li <chrisl@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Kairui Song <kasong@tencent.com> Cc: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Pedro Falcato <pfalcato@suse.de> Cc: SeongJae Park <sj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |