85c7000fda
1083748 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
85c7000fda |
The highlights are:
- several changes to how snap context and snap realms are tracked (Xiubo Li). In particular, this should resolve a long-standing issue of high kworker CPU usage and various stalls caused by needless iteration over all inodes in the snap realm. - async create fixes to address hangs in some edge cases (Jeff Layton) - support for getvxattr MDS op for querying server-side xattrs, such as file/directory layouts and ephemeral pins (Milind Changire) - average latency is now maintained for all metrics (Venky Shankar) - some tweaks around handling inline data to make it fit better with netfs helper library (David Howells) Also a couple of memory leaks got plugged along with a few assorted fixups. Last but not least, Xiubo has stepped up to serve as a CephFS co-maintainer. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmI8qE4THGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHzi9UvB/kBZt4mkyjqRC+KJ5rukw5q7lyAYGC1 QYVbuTuIJydyDvqQp9pXYFndlj10pb7ULnUlQlcBfntVAr9s7xx7ZKrKciE48MPT vLiJmq3MpEedM4oE4FgcJbmHtltDgZWvOxXB7renpHNeHuPeezNpKzaKQXGUHUDo +7cX5XWBzZk+AYbEvxQUsjDozcgDp31qf015mAX3r0P7XFkBB7xwZA7sb7Cw1GEr S6ZdlNoFcWUq0ULUdh2C7l5a2mKQnVnpOO3TMjE6tSqJ74iozRy4tO9aFgj99NEn D1rQbCLr3JPfY//JFyqEOIDYf3hepOMmEkoGHOFukckFKUe3yfJJxa3r =ESr5 -----END PGP SIGNATURE----- Merge tag 'ceph-for-5.18-rc1' of https://github.com/ceph/ceph-client Pull ceph updates from Ilya Dryomov: "The highlights are: - several changes to how snap context and snap realms are tracked (Xiubo Li). In particular, this should resolve a long-standing issue of high kworker CPU usage and various stalls caused by needless iteration over all inodes in the snap realm. - async create fixes to address hangs in some edge cases (Jeff Layton) - support for getvxattr MDS op for querying server-side xattrs, such as file/directory layouts and ephemeral pins (Milind Changire) - average latency is now maintained for all metrics (Venky Shankar) - some tweaks around handling inline data to make it fit better with netfs helper library (David Howells) Also a couple of memory leaks got plugged along with a few assorted fixups. Last but not least, Xiubo has stepped up to serve as a CephFS co-maintainer" * tag 'ceph-for-5.18-rc1' of https://github.com/ceph/ceph-client: (27 commits) ceph: fix memory leak in ceph_readdir when note_last_dentry returns error ceph: uninitialized variable in debug output ceph: use tracked average r/w/m latencies to display metrics in debugfs ceph: include average/stdev r/w/m latency in mds metrics ceph: track average r/w/m latency ceph: use ktime_to_timespec64() rather than jiffies_to_timespec64() ceph: assign the ci only when the inode isn't NULL ceph: fix inode reference leakage in ceph_get_snapdir() ceph: misc fix for code style and logs ceph: allocate capsnap memory outside of ceph_queue_cap_snap() ceph: do not release the global snaprealm until unmounting ceph: remove incorrect and unused CEPH_INO_DOTDOT macro MAINTAINERS: add Xiubo Li as cephfs co-maintainer ceph: eliminate the recursion when rebuilding the snap context ceph: do not update snapshot context when there is no new snapshot ceph: zero the dir_entries memory when allocating it ceph: move to a dedicated slabcache for ceph_cap_snap ceph: add getvxattr op libceph: drop else branches in prepare_read_data{,_cont} ceph: fix comments mentioning i_mutex ... |
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Linus Torvalds
|
b1b07ba356 |
New code for 5.18:
- Fix some incorrect mapping state being passed to iomap during COW
- Don't create bogus selinux audit messages when deciding to degrade
gracefully due to lack of privilege
- Fix setattr implementation to use VFS helpers so that we drop setgid
consistently with the other filesystems
- Fix link/unlink/rename to check quota limits
- Constify xfs_name_dotdot to prevent abuse of in-kernel symbols
- Fix log livelock between the AIL and inodegc threads during recovery
- Fix a log stall when the AIL races with pushers
- Fix stalls in CIL flushes due to pinned inode cluster buffers during
recovery
- Fix log corruption due to incorrect usage of xfs_is_shutdown vs
xlog_is_shutdown because during an induced fs shutdown, AIL writeback
must continue until the log is shut down, even if the filesystem has
already shut down
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Merge tag 'xfs-5.18-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Darrick Wong:
"The biggest change this cycle is bringing XFS' inode attribute setting
code back towards alignment with what the VFS does. IOWs, setgid bit
handling should be a closer match with ext4 and btrfs behavior.
The rest of the branch is bug fixes around the filesystem -- patching
gaps in quota enforcement, removing bogus selinux audit messages, and
fixing log corruption and problems with log recovery. There will be a
second pull request later on in the merge window with more bug fixes.
Dave Chinner will be taking over as XFS maintainer for one release
cycle, starting from the day 5.18-rc1 drops until 5.19-rc1 is tagged
so that I can focus on starting a massive design review for the
(feature complete after five years) online repair feature.
Summary:
- Fix some incorrect mapping state being passed to iomap during COW
- Don't create bogus selinux audit messages when deciding to degrade
gracefully due to lack of privilege
- Fix setattr implementation to use VFS helpers so that we drop
setgid consistently with the other filesystems
- Fix link/unlink/rename to check quota limits
- Constify xfs_name_dotdot to prevent abuse of in-kernel symbols
- Fix log livelock between the AIL and inodegc threads during
recovery
- Fix a log stall when the AIL races with pushers
- Fix stalls in CIL flushes due to pinned inode cluster buffers
during recovery
- Fix log corruption due to incorrect usage of xfs_is_shutdown vs
xlog_is_shutdown because during an induced fs shutdown, AIL
writeback must continue until the log is shut down, even if the
filesystem has already shut down"
* tag 'xfs-5.18-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: xfs_is_shutdown vs xlog_is_shutdown cage fight
xfs: AIL should be log centric
xfs: log items should have a xlog pointer, not a mount
xfs: async CIL flushes need pending pushes to be made stable
xfs: xfs_ail_push_all_sync() stalls when racing with updates
xfs: check buffer pin state after locking in delwri_submit
xfs: log worker needs to start before intent/unlink recovery
xfs: constify xfs_name_dotdot
xfs: constify the name argument to various directory functions
xfs: reserve quota for target dir expansion when renaming files
xfs: reserve quota for dir expansion when linking/unlinking files
xfs: refactor user/group quota chown in xfs_setattr_nonsize
xfs: use setattr_copy to set vfs inode attributes
xfs: don't generate selinux audit messages for capability testing
xfs: add missing cmap->br_state = XFS_EXT_NORM update
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Linus Torvalds
|
f0614eefbf |
dax for 5.18
- Fix a crash due to a missing rcu_barrier() in dax_fs_exit() - Fix two miscellaneous doc issues -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSbo+XnGs+rwLz9XGXfioYZHlFsZwUCYjp4zgAKCRDfioYZHlFs ZwgDAQD/jJE/uyFozwZR/YD8G293Hzs/acPUEQ/09t06W68SIAEAtwBr3WHKiFJL M+utFlm05fShOQl3lGwqiPS5/mQvzwc= =7AnI -----END PGP SIGNATURE----- Merge tag 'dax-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull DAX updates from Dan Williams: "Andrew has been shepherding major dax features that touch the core -mm through his tree, but I still collect the dax updates that are core-mm independent. - Fix a crash due to a missing rcu_barrier() in dax_fs_exit() - Fix two miscellaneous doc issues" * tag 'dax-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: Fix missing kdoc for dax_device dax: make sure inodes are flushed before destroy cache fsdax: fix function description |
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Linus Torvalds
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b9132c32e0 |
cxl for 5.18
- Add a driver for 'struct cxl_memdev' objects responsible for CXL.mem
operation as distinct from 'cxl_pci' mailbox operations. Its primary
responsibility is enumerating an endpoint 'struct cxl_port' and all the
'struct cxl_port' instances between an endpoint and the CXL platform
root.
- Add a driver for 'struct cxl_port' objects responsible for enumerating
and operating all Host-managed Device Memory (HDM) decoder resources
between the platform-level CXL memory description, all intervening host
bridges / switches, and the HDM resources in endpoints.
- Update the cxl_pci driver to validate CXL.mem operation precursors to
HDM decoder operation like ready-polling, and legacy CXL 1.1 DVSEC
based CXL.mem configuration.
- Add basic lockdep coverage for usage of device_lock() on CXL subsystem
objects similar to what exists for LIBNVDIMM. Include a compile-time
switch for which subsystem to validate at run-time.
- Update cxl_test to emulate a one level switch topology.
- Document a "Theory of Operation" for the subsystem.
- Add 'numa_node' and 'serial' attributes to cxl_memdev sysfs
- Include miscellaneous fixes for spec / QEMU CXL emulation
compatibility and static analysis reports.
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Merge tag 'cxl-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL (Compute Express Link) updates from Dan Williams:
"This development cycle extends the subsystem to discover CXL resources
throughout a CXL/PCIe switch topology and respond to hot add/remove
events anywhere in that topology.
This is more foundational infrastructure in preparation for dynamic
memory region provisioning support. Recall that CXL memory regions, as
the new "Theory of Operation" section of
Documentation/driver-api/cxl/memory-devices.rst describes, bring
storage volume striping semantics to memory.
The hot add/remove behavior is validated with extensions to the
cxl_test unit test environment and this test in the cxl-cli test
suite:
https://github.com/pmem/ndctl/blob/djbw/for-74/cxl/test/cxl-topology.sh
Summary:
- Add a driver for 'struct cxl_memdev' objects responsible for
CXL.mem operation as distinct from 'cxl_pci' mailbox operations.
Its primary responsibility is enumerating an endpoint 'struct
cxl_port' and all the 'struct cxl_port' instances between an
endpoint and the CXL platform root.
- Add a driver for 'struct cxl_port' objects responsible for
enumerating and operating all Host-managed Device Memory (HDM)
decoder resources between the platform-level CXL memory
description, all intervening host bridges / switches, and the HDM
resources in endpoints.
- Update the cxl_pci driver to validate CXL.mem operation precursors
to HDM decoder operation like ready-polling, and legacy CXL 1.1
DVSEC based CXL.mem configuration.
- Add basic lockdep coverage for usage of device_lock() on CXL
subsystem objects similar to what exists for LIBNVDIMM. Include a
compile-time switch for which subsystem to validate at run-time.
- Update cxl_test to emulate a one level switch topology.
- Document a "Theory of Operation" for the subsystem.
- Add 'numa_node' and 'serial' attributes to cxl_memdev sysfs
- Include miscellaneous fixes for spec / QEMU CXL emulation
compatibility and static analysis reports"
* tag 'cxl-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (48 commits)
cxl/core/port: Fix NULL but dereferenced coccicheck error
cxl/port: Hold port reference until decoder release
cxl/port: Fix endpoint refcount leak
cxl/core: Fix cxl_device_lock() class detection
cxl/core/port: Fix unregister_port() lock assertion
cxl/regs: Fix size of CXL Capability Header Register
cxl/core/port: Handle invalid decoders
cxl/core/port: Fix / relax decoder target enumeration
tools/testing/cxl: Add a physical_node link
tools/testing/cxl: Enumerate mock decoders
tools/testing/cxl: Mock one level of switches
tools/testing/cxl: Fix root port to host bridge assignment
tools/testing/cxl: Mock dvsec_ranges()
cxl/core/port: Add endpoint decoders
cxl/core: Move target_list out of base decoder attributes
cxl/mem: Add the cxl_mem driver
cxl/core/port: Add switch port enumeration
cxl/memdev: Add numa_node attribute
cxl/pci: Emit device serial number
cxl/pci: Implement wait for media active
...
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Linus Torvalds
|
b14ffae378 |
drm for 5.18-rc1
dma-buf: - rename dma-buf-map to iosys-map core: - move buddy allocator to core - add pci/platform init macros - improve EDID parser deep color handling - EDID timing type 7 support - add GPD Win Max quirk - add yes/no helpers to string_helpers - flatten syncobj chains - add nomodeset support to lots of drivers - improve fb-helper clipping support - add default property value interface fbdev: - improve fbdev ops speed ttm: - add a backpointer from ttm bo->ttm resource dp: - move displayport headers - add a dp helper module bridge: - anx7625 atomic support, HDCP support panel: - split out panel-lvds and lvds bindings - find panels in OF subnodes privacy: - add chromeos privacy screen support fb: - hot unplug fw fb on forced removal simpledrm: - request region instead of marking ioresource busy - add panel oreintation property udmabuf: - fix oops with 0 pages amdgpu: - power management code cleanup - Enable freesync video mode by default - RAS code cleanup - Improve VRAM access for debug using SDMA - SR-IOV rework special register access and fixes - profiling power state request ioctl - expose IP discovery via sysfs - Cyan skillfish updates - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates - expose benchmark tests via debugfs - add module param to disable XGMI for testing - GPU reset debugfs register dumping support amdkfd: - CRIU support - SDMA queue fixes radeon: - UVD suspend fix - iMac backlight fix i915: - minimal parallel submission for execlists - DG2-G12 subplatform added - DG2 programming workarounds - DG2 accelerated migration support - flat CCS and CCS engine support for XeHP - initial small BAR support - drop fake LMEM support - ADL-N PCH support - bigjoiner updates - introduce VMA resources and async unbinding - register definitions cleanups - multi-FBC refactoring - DG1 OPROM over SPI support - ADL-N platform enabling - opregion mailbox #5 support - DP MST ESI improvements - drm device based logging - async flip optimisation for DG2 - CPU arch abstraction fixes - improve GuC ADS init to work on aarch64 - tweak TTM LRU priority hint - GuC 69.0.3 support - remove short term execbuf pins nouveau: - higher DP/eDP bitrates - backlight fixes msm: - dpu + dp support for sc8180x - dp support for sm8350 - dpu + dsi support for qcm2290 - 10nm dsi phy tuning support - bridge support for dp encoder - gpu support for additional 7c3 SKUs ingenic: - HDMI support for JZ4780 - aux channel EDID support ast: - AST2600 support - add wide screen support - create DP/DVI connectors omapdrm: - fix implicit dma_buf fencing vc4: - add CSC + full range support - better display firmware handoff panfrost: - add initial dual-core GPU support stm: - new revision support - fb handover support mediatek: - transfer display binding document to yaml format. - add mt8195 display device binding. - allow commands to be sent during video mode. - add wait_for_event for crtc disable by cmdq. tegra: - YUV format support rcar-du: - LVDS support for M3-W+ (R8A77961) exynos: - BGR pixel format for FIMD device -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmI71h4ACgkQDHTzWXnE hr6wKg//SvKFiEOhptua8Ao8XYkhXpg1/tgdAs4D7bZ0YgJyF4Im0RuFOKMmF3mN 0Y8AwguqrsmrOAFbK8B1WEysB66DmGlZN/V2Q75X7fui8xs4uGF2Fcxyr+265zhf vONPwAoxYr+KXqwOI1p1BP2QEL6bJTdu+nrXRsXIBIrWnw8ehXJlw3fDhgvG5QBn RPdbU7lQnd47hdYxkbe5SiZvWnPC46dJmpqsRJir0xjskR6juU36f34C4IKhTGwO NDPeWVgusVXtIC/F4X6RebCWG0f66h+CUFa9zeYIleI/2/5yZWXfcw6Obx8HgPkt gieiI0R4TpkVxeHCApCQ5UpxWgfSOXdoDoyw172bKQw7JCHVEkSwenyMEEwNet6r SCJrRmlB1PBI/iTWmhm9qgrU46ZZyAnQoTlCsXGzJncdP3hzGlA1embl00yfEl7f wzM35N20qd5T4VKUEF8QYF0fLZYmKw4cWVASu4hQ3qmGal6frilphz2J8JK8hQNq KhFqNbVTnZsQNr9LBCbrf0kOPaMzpmW+2vQG9ApdAb1N3gNPZT7ctti0Xq5N2OUR AipWFAsDPS2NPADKmBtDU55PgFH9MqUIsoHHXLV4Qi76dvCqYoN68qRQxrL7rpSu b0gr0YKU2QcIB/uytjOPHcgtI5Xvrh+q8JPz/dJ38/Esgjmk4wo= =uRsT -----END PGP SIGNATURE----- Merge tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm Pull drm updates from Dave Airlie: "Lots of work all over, Intel improving DG2 support, amdkfd CRIU support, msm new hw support, and faster fbdev support. dma-buf: - rename dma-buf-map to iosys-map core: - move buddy allocator to core - add pci/platform init macros - improve EDID parser deep color handling - EDID timing type 7 support - add GPD Win Max quirk - add yes/no helpers to string_helpers - flatten syncobj chains - add nomodeset support to lots of drivers - improve fb-helper clipping support - add default property value interface fbdev: - improve fbdev ops speed ttm: - add a backpointer from ttm bo->ttm resource dp: - move displayport headers - add a dp helper module bridge: - anx7625 atomic support, HDCP support panel: - split out panel-lvds and lvds bindings - find panels in OF subnodes privacy: - add chromeos privacy screen support fb: - hot unplug fw fb on forced removal simpledrm: - request region instead of marking ioresource busy - add panel oreintation property udmabuf: - fix oops with 0 pages amdgpu: - power management code cleanup - Enable freesync video mode by default - RAS code cleanup - Improve VRAM access for debug using SDMA - SR-IOV rework special register access and fixes - profiling power state request ioctl - expose IP discovery via sysfs - Cyan skillfish updates - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates - expose benchmark tests via debugfs - add module param to disable XGMI for testing - GPU reset debugfs register dumping support amdkfd: - CRIU support - SDMA queue fixes radeon: - UVD suspend fix - iMac backlight fix i915: - minimal parallel submission for execlists - DG2-G12 subplatform added - DG2 programming workarounds - DG2 accelerated migration support - flat CCS and CCS engine support for XeHP - initial small BAR support - drop fake LMEM support - ADL-N PCH support - bigjoiner updates - introduce VMA resources and async unbinding - register definitions cleanups - multi-FBC refactoring - DG1 OPROM over SPI support - ADL-N platform enabling - opregion mailbox #5 support - DP MST ESI improvements - drm device based logging - async flip optimisation for DG2 - CPU arch abstraction fixes - improve GuC ADS init to work on aarch64 - tweak TTM LRU priority hint - GuC 69.0.3 support - remove short term execbuf pins nouveau: - higher DP/eDP bitrates - backlight fixes msm: - dpu + dp support for sc8180x - dp support for sm8350 - dpu + dsi support for qcm2290 - 10nm dsi phy tuning support - bridge support for dp encoder - gpu support for additional 7c3 SKUs ingenic: - HDMI support for JZ4780 - aux channel EDID support ast: - AST2600 support - add wide screen support - create DP/DVI connectors omapdrm: - fix implicit dma_buf fencing vc4: - add CSC + full range support - better display firmware handoff panfrost: - add initial dual-core GPU support stm: - new revision support - fb handover support mediatek: - transfer display binding document to yaml format. - add mt8195 display device binding. - allow commands to be sent during video mode. - add wait_for_event for crtc disable by cmdq. tegra: - YUV format support rcar-du: - LVDS support for M3-W+ (R8A77961) exynos: - BGR pixel format for FIMD device" * tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm: (1529 commits) drm/i915/display: Do not re-enable PSR after it was marked as not reliable drm/i915/display: Fix HPD short pulse handling for eDP drm/amdgpu: Use drm_mode_copy() drm/radeon: Use drm_mode_copy() drm/amdgpu: Use ternary operator in `vcn_v1_0_start()` drm/amdgpu: Remove pointless on stack mode copies drm/amd/pm: fix indenting in __smu_cmn_reg_print_error() drm/amdgpu/dc: fix typos in comments drm/amdgpu: fix typos in comments drm/amd/pm: fix typos in comments drm/amdgpu: Add stolen reserved memory for MI25 SRIOV. drm/amdgpu: Merge get_reserved_allocation to get_vbios_allocations. drm/amdkfd: evict svm bo worker handle error drm/amdgpu/vcn: fix vcn ring test failure in igt reload test drm/amdgpu: only allow secure submission on rings which support that drm/amdgpu: fixed the warnings reported by kernel test robot drm/amd/display: 3.2.177 drm/amd/display: [FW Promotion] Release 0.0.108.0 drm/amd/display: Add save/restore PANEL_PWRSEQ_REF_DIV2 drm/amd/display: Wait for hubp read line for Pollock ... |
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Linus Torvalds
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52deda9551 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "Various misc subsystems, before getting into the post-linux-next material. 41 patches. Subsystems affected by this patch series: procfs, misc, core-kernel, lib, checkpatch, init, pipe, minix, fat, cgroups, kexec, kdump, taskstats, panic, kcov, resource, and ubsan" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (41 commits) Revert "ubsan, kcsan: Don't combine sanitizer with kcov on clang" kernel/resource: fix kfree() of bootmem memory again kcov: properly handle subsequent mmap calls kcov: split ioctl handling into locked and unlocked parts panic: move panic_print before kmsg dumpers panic: add option to dump all CPUs backtraces in panic_print docs: sysctl/kernel: add missing bit to panic_print taskstats: remove unneeded dead assignment kasan: no need to unset panic_on_warn in end_report() ubsan: no need to unset panic_on_warn in ubsan_epilogue() panic: unset panic_on_warn inside panic() docs: kdump: add scp example to write out the dump file docs: kdump: update description about sysfs file system support arm64: mm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef x86/setup: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef riscv: mm: init: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef kexec: make crashk_res, crashk_low_res and crash_notes symbols always visible cgroup: use irqsave in cgroup_rstat_flush_locked(). fat: use pointer to simple type in put_user() minix: fix bug when opening a file with O_DIRECT ... |
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Linus Torvalds
|
169e77764a |
Networking changes for 5.18.
Core
----
- Introduce XDP multi-buffer support, allowing the use of XDP with
jumbo frame MTUs and combination with Rx coalescing offloads (LRO).
- Speed up netns dismantling (5x) and lower the memory cost a little.
Remove unnecessary per-netns sockets. Scope some lists to a netns.
Cut down RCU syncing. Use batch methods. Allow netdev registration
to complete out of order.
- Support distinguishing timestamp types (ingress vs egress) and
maintaining them across packet scrubbing points (e.g. redirect).
- Continue the work of annotating packet drop reasons throughout
the stack.
- Switch netdev error counters from an atomic to dynamically
allocated per-CPU counters.
- Rework a few preempt_disable(), local_irq_save() and busy waiting
sections problematic on PREEMPT_RT.
- Extend the ref_tracker to allow catching use-after-free bugs.
BPF
---
- Introduce "packing allocator" for BPF JIT images. JITed code is
marked read only, and used to be allocated at page granularity.
Custom allocator allows for more efficient memory use, lower
iTLB pressure and prevents identity mapping huge pages from
getting split.
- Make use of BTF type annotations (e.g. __user, __percpu) to enforce
the correct probe read access method, add appropriate helpers.
- Convert the BPF preload to use light skeleton and drop
the user-mode-driver dependency.
- Allow XDP BPF_PROG_RUN test infra to send real packets, enabling
its use as a packet generator.
- Allow local storage memory to be allocated with GFP_KERNEL if called
from a hook allowed to sleep.
- Introduce fprobe (multi kprobe) to speed up mass attachment (arch
bits to come later).
- Add unstable conntrack lookup helpers for BPF by using the BPF
kfunc infra.
- Allow cgroup BPF progs to return custom errors to user space.
- Add support for AF_UNIX iterator batching.
- Allow iterator programs to use sleepable helpers.
- Support JIT of add, and, or, xor and xchg atomic ops on arm64.
- Add BTFGen support to bpftool which allows to use CO-RE in kernels
without BTF info.
- Large number of libbpf API improvements, cleanups and deprecations.
Protocols
---------
- Micro-optimize UDPv6 Tx, gaining up to 5% in test on dummy netdev.
- Adjust TSO packet sizes based on min_rtt, allowing very low latency
links (data centers) to always send full-sized TSO super-frames.
- Make IPv6 flow label changes (AKA hash rethink) more configurable,
via sysctl and setsockopt. Distinguish between server and client
behavior.
- VxLAN support to "collect metadata" devices to terminate only
configured VNIs. This is similar to VLAN filtering in the bridge.
- Support inserting IPv6 IOAM information to a fraction of frames.
- Add protocol attribute to IP addresses to allow identifying where
given address comes from (kernel-generated, DHCP etc.)
- Support setting socket and IPv6 options via cmsg on ping6 sockets.
- Reject mis-use of ECN bits in IP headers as part of DSCP/TOS.
Define dscp_t and stop taking ECN bits into account in fib-rules.
- Add support for locked bridge ports (for 802.1X).
- tun: support NAPI for packets received from batched XDP buffs,
doubling the performance in some scenarios.
- IPv6 extension header handling in Open vSwitch.
- Support IPv6 control message load balancing in bonding, prevent
neighbor solicitation and advertisement from using the wrong port.
Support NS/NA monitor selection similar to existing ARP monitor.
- SMC
- improve performance with TCP_CORK and sendfile()
- support auto-corking
- support TCP_NODELAY
- MCTP (Management Component Transport Protocol)
- add user space tag control interface
- I2C binding driver (as specified by DMTF DSP0237)
- Multi-BSSID beacon handling in AP mode for WiFi.
- Bluetooth:
- handle MSFT Monitor Device Event
- add MGMT Adv Monitor Device Found/Lost events
- Multi-Path TCP:
- add support for the SO_SNDTIMEO socket option
- lots of selftest cleanups and improvements
- Increase the max PDU size in CAN ISOTP to 64 kB.
Driver API
----------
- Add HW counters for SW netdevs, a mechanism for devices which
offload packet forwarding to report packet statistics back to
software interfaces such as tunnels.
- Select the default NIC queue count as a fraction of number of
physical CPU cores, instead of hard-coding to 8.
- Expose devlink instance locks to drivers. Allow device layer of
drivers to use that lock directly instead of creating their own
which always runs into ordering issues in devlink callbacks.
- Add header/data split indication to guide user space enabling
of TCP zero-copy Rx.
- Allow configuring completion queue event size.
- Refactor page_pool to enable fragmenting after allocation.
- Add allocation and page reuse statistics to page_pool.
- Improve Multiple Spanning Trees support in the bridge to allow
reuse of topologies across VLANs, saving HW resources in switches.
- DSA (Distributed Switch Architecture):
- replay and offload of host VLAN entries
- offload of static and local FDB entries on LAG interfaces
- FDB isolation and unicast filtering
New hardware / drivers
----------------------
- Ethernet:
- LAN937x T1 PHYs
- Davicom DM9051 SPI NIC driver
- Realtek RTL8367S, RTL8367RB-VB switch and MDIO
- Microchip ksz8563 switches
- Netronome NFP3800 SmartNICs
- Fungible SmartNICs
- MediaTek MT8195 switches
- WiFi:
- mt76: MediaTek mt7916
- mt76: MediaTek mt7921u USB adapters
- brcmfmac: Broadcom BCM43454/6
- Mobile:
- iosm: Intel M.2 7360 WWAN card
Drivers
-------
- Convert many drivers to the new phylink API built for split PCS
designs but also simplifying other cases.
- Intel Ethernet NICs:
- add TTY for GNSS module for E810T device
- improve AF_XDP performance
- GTP-C and GTP-U filter offload
- QinQ VLAN support
- Mellanox Ethernet NICs (mlx5):
- support xdp->data_meta
- multi-buffer XDP
- offload tc push_eth and pop_eth actions
- Netronome Ethernet NICs (nfp):
- flow-independent tc action hardware offload (police / meter)
- AF_XDP
- Other Ethernet NICs:
- at803x: fiber and SFP support
- xgmac: mdio: preamble suppression and custom MDC frequencies
- r8169: enable ASPM L1.2 if system vendor flags it as safe
- macb/gem: ZynqMP SGMII
- hns3: add TX push mode
- dpaa2-eth: software TSO
- lan743x: multi-queue, mdio, SGMII, PTP
- axienet: NAPI and GRO support
- Mellanox Ethernet switches (mlxsw):
- source and dest IP address rewrites
- RJ45 ports
- Marvell Ethernet switches (prestera):
- basic routing offload
- multi-chain TC ACL offload
- NXP embedded Ethernet switches (ocelot & felix):
- PTP over UDP with the ocelot-8021q DSA tagging protocol
- basic QoS classification on Felix DSA switch using dcbnl
- port mirroring for ocelot switches
- Microchip high-speed industrial Ethernet (sparx5):
- offloading of bridge port flooding flags
- PTP Hardware Clock
- Other embedded switches:
- lan966x: PTP Hardward Clock
- qca8k: mdio read/write operations via crafted Ethernet packets
- Qualcomm 802.11ax WiFi (ath11k):
- add LDPC FEC type and 802.11ax High Efficiency data in radiotap
- enable RX PPDU stats in monitor co-exist mode
- Intel WiFi (iwlwifi):
- UHB TAS enablement via BIOS
- band disablement via BIOS
- channel switch offload
- 32 Rx AMPDU sessions in newer devices
- MediaTek WiFi (mt76):
- background radar detection
- thermal management improvements on mt7915
- SAR support for more mt76 platforms
- MBSSID and 6 GHz band on mt7915
- RealTek WiFi:
- rtw89: AP mode
- rtw89: 160 MHz channels and 6 GHz band
- rtw89: hardware scan
- Bluetooth:
- mt7921s: wake on Bluetooth, SCO over I2S, wide-band-speed (WBS)
- Microchip CAN (mcp251xfd):
- multiple RX-FIFOs and runtime configurable RX/TX rings
- internal PLL, runtime PM handling simplification
- improve chip detection and error handling after wakeup
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"The sprinkling of SPI drivers is because we added a new one and Mark
sent us a SPI driver interface conversion pull request.
Core
----
- Introduce XDP multi-buffer support, allowing the use of XDP with
jumbo frame MTUs and combination with Rx coalescing offloads (LRO).
- Speed up netns dismantling (5x) and lower the memory cost a little.
Remove unnecessary per-netns sockets. Scope some lists to a netns.
Cut down RCU syncing. Use batch methods. Allow netdev registration
to complete out of order.
- Support distinguishing timestamp types (ingress vs egress) and
maintaining them across packet scrubbing points (e.g. redirect).
- Continue the work of annotating packet drop reasons throughout the
stack.
- Switch netdev error counters from an atomic to dynamically
allocated per-CPU counters.
- Rework a few preempt_disable(), local_irq_save() and busy waiting
sections problematic on PREEMPT_RT.
- Extend the ref_tracker to allow catching use-after-free bugs.
BPF
---
- Introduce "packing allocator" for BPF JIT images. JITed code is
marked read only, and used to be allocated at page granularity.
Custom allocator allows for more efficient memory use, lower iTLB
pressure and prevents identity mapping huge pages from getting
split.
- Make use of BTF type annotations (e.g. __user, __percpu) to enforce
the correct probe read access method, add appropriate helpers.
- Convert the BPF preload to use light skeleton and drop the
user-mode-driver dependency.
- Allow XDP BPF_PROG_RUN test infra to send real packets, enabling
its use as a packet generator.
- Allow local storage memory to be allocated with GFP_KERNEL if
called from a hook allowed to sleep.
- Introduce fprobe (multi kprobe) to speed up mass attachment (arch
bits to come later).
- Add unstable conntrack lookup helpers for BPF by using the BPF
kfunc infra.
- Allow cgroup BPF progs to return custom errors to user space.
- Add support for AF_UNIX iterator batching.
- Allow iterator programs to use sleepable helpers.
- Support JIT of add, and, or, xor and xchg atomic ops on arm64.
- Add BTFGen support to bpftool which allows to use CO-RE in kernels
without BTF info.
- Large number of libbpf API improvements, cleanups and deprecations.
Protocols
---------
- Micro-optimize UDPv6 Tx, gaining up to 5% in test on dummy netdev.
- Adjust TSO packet sizes based on min_rtt, allowing very low latency
links (data centers) to always send full-sized TSO super-frames.
- Make IPv6 flow label changes (AKA hash rethink) more configurable,
via sysctl and setsockopt. Distinguish between server and client
behavior.
- VxLAN support to "collect metadata" devices to terminate only
configured VNIs. This is similar to VLAN filtering in the bridge.
- Support inserting IPv6 IOAM information to a fraction of frames.
- Add protocol attribute to IP addresses to allow identifying where
given address comes from (kernel-generated, DHCP etc.)
- Support setting socket and IPv6 options via cmsg on ping6 sockets.
- Reject mis-use of ECN bits in IP headers as part of DSCP/TOS.
Define dscp_t and stop taking ECN bits into account in fib-rules.
- Add support for locked bridge ports (for 802.1X).
- tun: support NAPI for packets received from batched XDP buffs,
doubling the performance in some scenarios.
- IPv6 extension header handling in Open vSwitch.
- Support IPv6 control message load balancing in bonding, prevent
neighbor solicitation and advertisement from using the wrong port.
Support NS/NA monitor selection similar to existing ARP monitor.
- SMC
- improve performance with TCP_CORK and sendfile()
- support auto-corking
- support TCP_NODELAY
- MCTP (Management Component Transport Protocol)
- add user space tag control interface
- I2C binding driver (as specified by DMTF DSP0237)
- Multi-BSSID beacon handling in AP mode for WiFi.
- Bluetooth:
- handle MSFT Monitor Device Event
- add MGMT Adv Monitor Device Found/Lost events
- Multi-Path TCP:
- add support for the SO_SNDTIMEO socket option
- lots of selftest cleanups and improvements
- Increase the max PDU size in CAN ISOTP to 64 kB.
Driver API
----------
- Add HW counters for SW netdevs, a mechanism for devices which
offload packet forwarding to report packet statistics back to
software interfaces such as tunnels.
- Select the default NIC queue count as a fraction of number of
physical CPU cores, instead of hard-coding to 8.
- Expose devlink instance locks to drivers. Allow device layer of
drivers to use that lock directly instead of creating their own
which always runs into ordering issues in devlink callbacks.
- Add header/data split indication to guide user space enabling of
TCP zero-copy Rx.
- Allow configuring completion queue event size.
- Refactor page_pool to enable fragmenting after allocation.
- Add allocation and page reuse statistics to page_pool.
- Improve Multiple Spanning Trees support in the bridge to allow
reuse of topologies across VLANs, saving HW resources in switches.
- DSA (Distributed Switch Architecture):
- replay and offload of host VLAN entries
- offload of static and local FDB entries on LAG interfaces
- FDB isolation and unicast filtering
New hardware / drivers
----------------------
- Ethernet:
- LAN937x T1 PHYs
- Davicom DM9051 SPI NIC driver
- Realtek RTL8367S, RTL8367RB-VB switch and MDIO
- Microchip ksz8563 switches
- Netronome NFP3800 SmartNICs
- Fungible SmartNICs
- MediaTek MT8195 switches
- WiFi:
- mt76: MediaTek mt7916
- mt76: MediaTek mt7921u USB adapters
- brcmfmac: Broadcom BCM43454/6
- Mobile:
- iosm: Intel M.2 7360 WWAN card
Drivers
-------
- Convert many drivers to the new phylink API built for split PCS
designs but also simplifying other cases.
- Intel Ethernet NICs:
- add TTY for GNSS module for E810T device
- improve AF_XDP performance
- GTP-C and GTP-U filter offload
- QinQ VLAN support
- Mellanox Ethernet NICs (mlx5):
- support xdp->data_meta
- multi-buffer XDP
- offload tc push_eth and pop_eth actions
- Netronome Ethernet NICs (nfp):
- flow-independent tc action hardware offload (police / meter)
- AF_XDP
- Other Ethernet NICs:
- at803x: fiber and SFP support
- xgmac: mdio: preamble suppression and custom MDC frequencies
- r8169: enable ASPM L1.2 if system vendor flags it as safe
- macb/gem: ZynqMP SGMII
- hns3: add TX push mode
- dpaa2-eth: software TSO
- lan743x: multi-queue, mdio, SGMII, PTP
- axienet: NAPI and GRO support
- Mellanox Ethernet switches (mlxsw):
- source and dest IP address rewrites
- RJ45 ports
- Marvell Ethernet switches (prestera):
- basic routing offload
- multi-chain TC ACL offload
- NXP embedded Ethernet switches (ocelot & felix):
- PTP over UDP with the ocelot-8021q DSA tagging protocol
- basic QoS classification on Felix DSA switch using dcbnl
- port mirroring for ocelot switches
- Microchip high-speed industrial Ethernet (sparx5):
- offloading of bridge port flooding flags
- PTP Hardware Clock
- Other embedded switches:
- lan966x: PTP Hardward Clock
- qca8k: mdio read/write operations via crafted Ethernet packets
- Qualcomm 802.11ax WiFi (ath11k):
- add LDPC FEC type and 802.11ax High Efficiency data in radiotap
- enable RX PPDU stats in monitor co-exist mode
- Intel WiFi (iwlwifi):
- UHB TAS enablement via BIOS
- band disablement via BIOS
- channel switch offload
- 32 Rx AMPDU sessions in newer devices
- MediaTek WiFi (mt76):
- background radar detection
- thermal management improvements on mt7915
- SAR support for more mt76 platforms
- MBSSID and 6 GHz band on mt7915
- RealTek WiFi:
- rtw89: AP mode
- rtw89: 160 MHz channels and 6 GHz band
- rtw89: hardware scan
- Bluetooth:
- mt7921s: wake on Bluetooth, SCO over I2S, wide-band-speed (WBS)
- Microchip CAN (mcp251xfd):
- multiple RX-FIFOs and runtime configurable RX/TX rings
- internal PLL, runtime PM handling simplification
- improve chip detection and error handling after wakeup"
* tag 'net-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2521 commits)
llc: fix netdevice reference leaks in llc_ui_bind()
drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool
ice: don't allow to run ice_send_event_to_aux() in atomic ctx
ice: fix 'scheduling while atomic' on aux critical err interrupt
net/sched: fix incorrect vlan_push_eth dest field
net: bridge: mst: Restrict info size queries to bridge ports
net: marvell: prestera: add missing destroy_workqueue() in prestera_module_init()
drivers: net: xgene: Fix regression in CRC stripping
net: geneve: add missing netlink policy and size for IFLA_GENEVE_INNER_PROTO_INHERIT
net: dsa: fix missing host-filtered multicast addresses
net/mlx5e: Fix build warning, detected write beyond size of field
iwlwifi: mvm: Don't fail if PPAG isn't supported
selftests/bpf: Fix kprobe_multi test.
Revert "rethook: x86: Add rethook x86 implementation"
Revert "arm64: rethook: Add arm64 rethook implementation"
Revert "powerpc: Add rethook support"
Revert "ARM: rethook: Add rethook arm implementation"
netdevice: add missing dm_private kdoc
net: bridge: mst: prevent NULL deref in br_mst_info_size()
selftests: forwarding: Use same VRF for port and VLAN upper
...
|
||
|
Linus Torvalds
|
7403e6d826 |
VFIO updates for v5.18-rc1
- Introduce new device migration uAPI and implement device specific
mlx5 vfio-pci variant driver supporting new protocol (Jason Gunthorpe,
Yishai Hadas, Leon Romanovsky)
- New HiSilicon acc vfio-pci variant driver, also supporting migration
interface (Shameer Kolothum, Longfang Liu)
- D3hot fixes for vfio-pci-core (Abhishek Sahu)
- Document new vfio-pci variant driver acceptance criteria
(Alex Williamson)
- Fix UML build unresolved ioport_{un}map() functions
(Alex Williamson)
- Fix MAINTAINERS due to header movement (Lukas Bulwahn)
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Merge tag 'vfio-v5.18-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Introduce new device migration uAPI and implement device specific
mlx5 vfio-pci variant driver supporting new protocol (Jason
Gunthorpe, Yishai Hadas, Leon Romanovsky)
- New HiSilicon acc vfio-pci variant driver, also supporting migration
interface (Shameer Kolothum, Longfang Liu)
- D3hot fixes for vfio-pci-core (Abhishek Sahu)
- Document new vfio-pci variant driver acceptance criteria
(Alex Williamson)
- Fix UML build unresolved ioport_{un}map() functions
(Alex Williamson)
- Fix MAINTAINERS due to header movement (Lukas Bulwahn)
* tag 'vfio-v5.18-rc1' of https://github.com/awilliam/linux-vfio: (31 commits)
vfio-pci: Provide reviewers and acceptance criteria for variant drivers
MAINTAINERS: adjust entry for header movement in hisilicon qm driver
hisi_acc_vfio_pci: Use its own PCI reset_done error handler
hisi_acc_vfio_pci: Add support for VFIO live migration
crypto: hisilicon/qm: Set the VF QM state register
hisi_acc_vfio_pci: Add helper to retrieve the struct pci_driver
hisi_acc_vfio_pci: Restrict access to VF dev BAR2 migration region
hisi_acc_vfio_pci: add new vfio_pci driver for HiSilicon ACC devices
hisi_acc_qm: Move VF PCI device IDs to common header
crypto: hisilicon/qm: Move few definitions to common header
crypto: hisilicon/qm: Move the QM header to include/linux
vfio/mlx5: Fix to not use 0 as NULL pointer
PCI/IOV: Fix wrong kernel-doc identifier
vfio/mlx5: Use its own PCI reset_done error handler
vfio/pci: Expose vfio_pci_core_aer_err_detected()
vfio/mlx5: Implement vfio_pci driver for mlx5 devices
vfio/mlx5: Expose migration commands over mlx5 device
vfio: Remove migration protocol v1 documentation
vfio: Extend the device migration protocol with RUNNING_P2P
vfio: Define device migration protocol v2
...
|
||
|
Linus Torvalds
|
66711cfea6 |
hyperv-next for 5.18
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmI6MhgTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXiBkB/9FEaebcytvBMNVnz/fprfQWfYxdrUB wmDB9dnJVPX6UcWg6DuDv7KqatimDp7JrnKrNsrqlgF6Wafn/wI3Cdf8ZUi8CgtZ Walq8m2QM9j8WCm4EtgmluzGkHjAn6llmjE7XoLmo/A8MYp0FZhJzghKfCEu54EB 9DhgqQX+zzy7n32CxoAWrGrHegnGeqMpj3rhQ4qVuNn+bOzZ/wTyJQPmXTu4hSW1 0PrXRnfzqnODkB6QDUantABZM5bh1VsqwIlENp+xAFQVsQpsc35lW7AUg7JXczVn ES0+UHG7wVWPJCtIfD4FgIFT1xekPKxRYX9U66LMRbWGYhXfohQX+wFt =u62V -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20220322' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: "Minor patches from various people" * tag 'hyperv-next-signed-20220322' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Output host build info as normal Windows version number hv_balloon: rate-limit "Unhandled message" warning drivers: hv: log when enabling crash_kexec_post_notifiers hv_utils: Add comment about max VMbus packet size in VSS driver Drivers: hv: Compare cpumasks and not their weights in init_vp_index() Drivers: hv: Rename 'alloced' to 'allocated' Drivers: hv: vmbus: Use struct_size() helper in kmalloc() |
||
|
Linus Torvalds
|
1ebdbeb03e |
ARM:
- Proper emulation of the OSLock feature of the debug architecture
- Scalibility improvements for the MMU lock when dirty logging is on
- New VMID allocator, which will eventually help with SVA in VMs
- Better support for PMUs in heterogenous systems
- PSCI 1.1 support, enabling support for SYSTEM_RESET2
- Implement CONFIG_DEBUG_LIST at EL2
- Make CONFIG_ARM64_ERRATUM_2077057 default y
- Reduce the overhead of VM exit when no interrupt is pending
- Remove traces of 32bit ARM host support from the documentation
- Updated vgic selftests
- Various cleanups, doc updates and spelling fixes
RISC-V:
- Prevent KVM_COMPAT from being selected
- Optimize __kvm_riscv_switch_to() implementation
- RISC-V SBI v0.3 support
s390:
- memop selftest
- fix SCK locking
- adapter interruptions virtualization for secure guests
- add Claudio Imbrenda as maintainer
- first step to do proper storage key checking
x86:
- Continue switching kvm_x86_ops to static_call(); introduce
static_call_cond() and __static_call_ret0 when applicable.
- Cleanup unused arguments in several functions
- Synthesize AMD 0x80000021 leaf
- Fixes and optimization for Hyper-V sparse-bank hypercalls
- Implement Hyper-V's enlightened MSR bitmap for nested SVM
- Remove MMU auditing
- Eager splitting of page tables (new aka "TDP" MMU only) when dirty
page tracking is enabled
- Cleanup the implementation of the guest PGD cache
- Preparation for the implementation of Intel IPI virtualization
- Fix some segment descriptor checks in the emulator
- Allow AMD AVIC support on systems with physical APIC ID above 255
- Better API to disable virtualization quirks
- Fixes and optimizations for the zapping of page tables:
- Zap roots in two passes, avoiding RCU read-side critical sections
that last too long for very large guests backed by 4 KiB SPTEs.
- Zap invalid and defunct roots asynchronously via concurrency-managed
work queue.
- Allowing yielding when zapping TDP MMU roots in response to the root's
last reference being put.
- Batch more TLB flushes with an RCU trick. Whoever frees the paging
structure now holds RCU as a proxy for all vCPUs running in the guest,
i.e. to prolongs the grace period on their behalf. It then kicks the
the vCPUs out of guest mode before doing rcu_read_unlock().
Generic:
- Introduce __vcalloc and use it for very large allocations that
need memcg accounting
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"ARM:
- Proper emulation of the OSLock feature of the debug architecture
- Scalibility improvements for the MMU lock when dirty logging is on
- New VMID allocator, which will eventually help with SVA in VMs
- Better support for PMUs in heterogenous systems
- PSCI 1.1 support, enabling support for SYSTEM_RESET2
- Implement CONFIG_DEBUG_LIST at EL2
- Make CONFIG_ARM64_ERRATUM_2077057 default y
- Reduce the overhead of VM exit when no interrupt is pending
- Remove traces of 32bit ARM host support from the documentation
- Updated vgic selftests
- Various cleanups, doc updates and spelling fixes
RISC-V:
- Prevent KVM_COMPAT from being selected
- Optimize __kvm_riscv_switch_to() implementation
- RISC-V SBI v0.3 support
s390:
- memop selftest
- fix SCK locking
- adapter interruptions virtualization for secure guests
- add Claudio Imbrenda as maintainer
- first step to do proper storage key checking
x86:
- Continue switching kvm_x86_ops to static_call(); introduce
static_call_cond() and __static_call_ret0 when applicable.
- Cleanup unused arguments in several functions
- Synthesize AMD 0x80000021 leaf
- Fixes and optimization for Hyper-V sparse-bank hypercalls
- Implement Hyper-V's enlightened MSR bitmap for nested SVM
- Remove MMU auditing
- Eager splitting of page tables (new aka "TDP" MMU only) when dirty
page tracking is enabled
- Cleanup the implementation of the guest PGD cache
- Preparation for the implementation of Intel IPI virtualization
- Fix some segment descriptor checks in the emulator
- Allow AMD AVIC support on systems with physical APIC ID above 255
- Better API to disable virtualization quirks
- Fixes and optimizations for the zapping of page tables:
- Zap roots in two passes, avoiding RCU read-side critical
sections that last too long for very large guests backed by 4
KiB SPTEs.
- Zap invalid and defunct roots asynchronously via
concurrency-managed work queue.
- Allowing yielding when zapping TDP MMU roots in response to the
root's last reference being put.
- Batch more TLB flushes with an RCU trick. Whoever frees the
paging structure now holds RCU as a proxy for all vCPUs running
in the guest, i.e. to prolongs the grace period on their behalf.
It then kicks the the vCPUs out of guest mode before doing
rcu_read_unlock().
Generic:
- Introduce __vcalloc and use it for very large allocations that need
memcg accounting"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (246 commits)
KVM: use kvcalloc for array allocations
KVM: x86: Introduce KVM_CAP_DISABLE_QUIRKS2
kvm: x86: Require const tsc for RT
KVM: x86: synthesize CPUID leaf 0x80000021h if useful
KVM: x86: add support for CPUID leaf 0x80000021
KVM: x86: do not use KVM_X86_OP_OPTIONAL_RET0 for get_mt_mask
Revert "KVM: x86/mmu: Zap only TDP MMU leafs in kvm_zap_gfn_range()"
kvm: x86/mmu: Flush TLB before zap_gfn_range releases RCU
KVM: arm64: fix typos in comments
KVM: arm64: Generalise VM features into a set of flags
KVM: s390: selftests: Add error memop tests
KVM: s390: selftests: Add more copy memop tests
KVM: s390: selftests: Add named stages for memop test
KVM: s390: selftests: Add macro as abstraction for MEM_OP
KVM: s390: selftests: Split memop tests
KVM: s390x: fix SCK locking
RISC-V: KVM: Implement SBI HSM suspend call
RISC-V: KVM: Add common kvm_riscv_vcpu_wfi() function
RISC-V: Add SBI HSM suspend related defines
RISC-V: KVM: Implement SBI v0.3 SRST extension
...
|
||
|
Linus Torvalds
|
efee6c7929 |
A patch to avoid unnecessarily leaking kernel command line arguments.
TOMOYO: fix __setup handlers return values security/tomoyo/load_policy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJiOZ6XAAoJEEJfEo0MZPUqzwMQAIdvnEHjVOm3jdtTjaOAHAQF 6ElOMwb0fD4dxSSwcXIy7PaMSr7J/ZgT74Gx/7Cv9UODAqqwoRw0ip5TeTp6NyJT jjqXGAr5Ft3JQnM0CuxXaRrUqr5eb+9bafGS0XQV/BS/Hhhbmk7FtkfHqEiYLqNr d6nWi1rkvNbBeDthYquWfHS0QJQlwFToFe/DiyomE+t5txZYzqITPknPj811I4jj MA7KxAvvQh4nHi2nM9nUXf6FPSqnyfEOyMrF/xriXE3w0iI2WWOFTNGMKKCwaSzV 0TwzcAHDbcW1tfgBEL/7t+REpZDl5vW35po0qskyLYZIdX0xPl/0qifFlzN9h4qB Ls0NJlVaZL/F51I4Es3CHkpHOyqUnUhFGvaSjunnadH6frQ+xgTjjZfwQ2U0WJlM 0695Lflt+WCyw1RUmGiyNEdpISLFHhueFuvUWHx1Wn5PI2P/JCYKU3Dz3yx3o30a vwpVyyXP9tuyCnF35EQQIl2nuMRwHzlizsYdIz3UVtxkDNK3Vj9QdPYXrSMFrrTO 2OAYoIm8gBKic8YYM/J2L3TL/Tb4Xn2ilxGGEjTmAUkC4XiutqbNjEVY5Aqk7PnW izqhWwE+Jlg5GGW+YUPNT839M8sLfTq3VI5dBaloxWUQy5nCPUuSSFfU/ge20DVK kjpJBEAVHDA7rOAV/gIq =ZBqm -----END PGP SIGNATURE----- Merge tag 'tomoyo-pr-20220322' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1 Pull tomoyo update from Tetsuo Handa: "Avoid unnecessarily leaking kernel command line arguments" * tag 'tomoyo-pr-20220322' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1: TOMOYO: fix __setup handlers return values |
||
|
Linus Torvalds
|
3ce62cf4dc |
flexible-array transformations for 5.18-rc1
Hi Linus, Please, pull the following treewide patch that replaces zero-length arrays with flexible-array members. This patch has been baking in linux-next for a whole development cycle. Thanks -- Gustavo -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEkmRahXBSurMIg1YvRwW0y0cG2zEFAmI6GIUACgkQRwW0y0cG 2zFLWw/+OB1gZeQD3boKpUMntWnn6wjhUxdrO8CYkpzG+B+8TFECXNjy8HV1CSiw GKKRndYELOyYaD5o/F2vtPe10iPHbrdIlMFRPBRoht0/cvSZgzHlfT8EjWQwerYY dieztUFKjeSj0MXivdNDnKOTm8o9cz8KmCrWFP+My37Fasn/9+nBX8iNVIvAX4xy T+IVmjtDifQUsTs298UGnBvDeuZOiGHhXXU5rq6lIX0Rl554OsWZW94d6jUPj/h7 t1v6jdojNuyaMKn45/xnPj9VvmDiSu3K67m3fjRdzLPDOhISjr2fw4KEUOKdsebh yJ9t5u8IufyPbm9kyI+rZt+T8ZlV2/qt2+mt6QgtDMnWrs+4nU15JY0SHImMSBZQ rBEZcQlrIcGJ+CsNB8Y7jIGYO0SSkhodAvfl0LRA0AbTqLGqq0OkAQS5D52r3H2r uz6xdYb7kG43XaRyaAIPqhZsp/jk2NrXvEvin2tSaXZFR1cxp+oxcV2UajmnOU6i EIBS4PzJnYx2RZRa+h8YbBa/+D4N6+fj/tjmwBawiUBPjjaLAsGFNwUHqvBoD05S bk6oXi654NBwVjsknZ0grVz0TtSvdZ3uJL5FZApTOHITqH8vlxlNefmHri4vZRZO NN7NIQ0yaUCnorzMg+vP8ZtflhQwrMJbjwIS9YD0RHd7MBhYX8k= =xZD2 -----END PGP SIGNATURE----- Merge tag 'flexible-array-transformations-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull flexible-array transformations from Gustavo Silva: "Treewide patch that replaces zero-length arrays with flexible-array members. This has been baking in linux-next for a whole development cycle" * tag 'flexible-array-transformations-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: treewide: Replace zero-length arrays with flexible-array members |
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|
Linus Torvalds
|
cd4699c5fd |
prlimit and set/getpriority tasklist_lock optimizations
The tasklist_lock popped up as a scalability bottleneck on some testing workloads. The readlocks in do_prlimit and set/getpriority are not necessary in all cases. Based on a cycles profile, it looked like ~87% of the time was spent in the kernel, ~42% of which was just trying to get *some* spinlock (queued_spin_lock_slowpath, not necessarily the tasklist_lock). The big offenders (with rough percentages in cycles of the overall trace): - do_wait 11% - setpriority 8% (this patchset) - kill 8% - do_exit 5% - clone 3% - prlimit64 2% (this patchset) - getrlimit 1% (this patchset) I can't easily test this patchset on the original workload for various reasons. Instead, I used the microbenchmark below to at least verify there was some improvement. This patchset had a 28% speedup (12% from baseline to set/getprio, then another 14% for prlimit). One interesting thing is that my libc's getrlimit() was calling prlimit64, so hoisting the read_lock(tasklist_lock) into sys_prlimit64 had no effect - it essentially optimized the older syscalls only. I didn't do that in this patchset, but figured I'd mention it since it was an option from the previous patch's discussion. v3: https://lkml.kernel.org/r/20220106172041.522167-1-brho@google.com v2: https://lore.kernel.org/lkml/20220105212828.197013-1-brho@google.com/ - update_rlimit_cpu on the group_leader instead of for_each_thread. - update_rlimit_cpu still returns 0 or -ESRCH, even though we don't care about the error here. it felt safer that way in case someone uses that function again. v1: https://lore.kernel.org/lkml/20211213220401.1039578-1-brho@google.com/ int main(int argc, char **argv) { pid_t child; struct rlimit rlim[1]; fork(); fork(); fork(); fork(); fork(); fork(); for (int i = 0; i < 5000; i++) { child = fork(); if (child < 0) exit(1); if (child > 0) { usleep(1000); kill(child, SIGTERM); waitpid(child, NULL, 0); } else { for (;;) { setpriority(PRIO_PROCESS, 0, getpriority(PRIO_PROCESS, 0)); getrlimit(RLIMIT_CPU, rlim); } } } return 0; } Barret Rhoden (3): setpriority: only grab the tasklist_lock for PRIO_PGRP prlimit: make do_prlimit() static prlimit: do not grab the tasklist_lock include/linux/posix-timers.h | 2 +- include/linux/resource.h | 2 - kernel/sys.c | 127 +++++++++++++++++---------------- kernel/time/posix-cpu-timers.c | 12 +++- 4 files changed, 76 insertions(+), 67 deletions(-) I have dropped the first change in this series as an almost identical change was merged as commit |
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|
Linus Torvalds
|
2e2d4650b3 |
fs.rt.v5.18
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCYjr50AAKCRCRxhvAZXjc oroBAQC0daGrkl6XJirLzyMVjNWWbuSEdB+Q3ipMrwySxjYmtwD/XSPGAKGBbHQz 13EtvTMT8FlqSyDIKHYBM5uDyrWQZgs= =uJdq -----END PGP SIGNATURE----- Merge tag 'fs.rt.v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull mount attributes PREEMPT_RT update from Christian Brauner: "This contains Sebastian's fix to make changing mount attributes/getting write access compatible with CONFIG_PREEMPT_RT. The change only applies when users explicitly opt-in to real-time via CONFIG_PREEMPT_RT otherwise things are exactly as before. We've waited quite a long time with this to make sure folks could take a good look" * tag 'fs.rt.v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: fs/namespace: Boost the mount_lock.lock owner instead of spinning on PREEMPT_RT. |
||
|
Linus Torvalds
|
15f2e3d6c1 |
fs.v5.18
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCYjrxKAAKCRCRxhvAZXjc oi77AQDdLziGyeKSHlyPw1xeWiqsZVRLhhD07F8kVaAkjg3ZWwEAs3jL0Pzfnd7J IIx//6YK46cbfc471FdVuUDfMjkfVAw= =VaFd -----END PGP SIGNATURE----- Merge tag 'fs.v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull mount_setattr updates from Christian Brauner: "This contains a few more patches to massage the mount_setattr() codepaths and one minor fix to reuse a helper we added some time back. The final two patches do similar cleanups in different ways. One patch is mine and the other is Al's who was nice enough to give me a branch for it. Since his came in later and my branch had been sitting in -next for quite some time we just put his on top instead of swap them" * tag 'fs.v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: mount_setattr(): clean the control flow and calling conventions fs: clean up mount_setattr control flow fs: don't open-code mnt_hold_writers() fs: simplify check in mount_setattr_commit() fs: add mnt_allow_writers() and simplify mount_setattr_prepare() |
||
Marco Elver
|
b027471ada |
Revert "ubsan, kcsan: Don't combine sanitizer with kcov on clang"
This reverts commit |
||
Miaohe Lin
|
0cbcc92917 |
kernel/resource: fix kfree() of bootmem memory again
Since commit |
||
Aleksandr Nogikh
|
b3d7fe86fb |
kcov: properly handle subsequent mmap calls
Allocate the kcov buffer during KCOV_MODE_INIT in order to untie mmapping of a kcov instance and the actual coverage collection process. Modify kcov_mmap, so that it can be reliably used any number of times once KCOV_MODE_INIT has succeeded. These changes to the user-facing interface of the tool only weaken the preconditions, so all existing user space code should remain compatible with the new version. Link: https://lkml.kernel.org/r/20220117153634.150357-3-nogikh@google.com Signed-off-by: Aleksandr Nogikh <nogikh@google.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Marco Elver <elver@google.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Taras Madan <tarasmadan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Aleksandr Nogikh
|
17581aa136 |
kcov: split ioctl handling into locked and unlocked parts
Patch series "kcov: improve mmap processing", v3. Subsequent mmaps of the same kcov descriptor currently do not update the virtual memory of the task and yet return 0 (success). This is counter-intuitive and may lead to unexpected memory access errors. Also, this unnecessarily limits the functionality of kcov to only the simplest usage scenarios. Kcov instances are effectively forever attached to their first address spaces and it becomes impossible to e.g. reuse the same kcov handle in forked child processes without mmapping the memory first. This is exactly what we tried to do in syzkaller and inadvertently came upon this behavior. This patch series addresses the problem described above. This patch (of 3): Currently all ioctls are de facto processed under a spinlock in order to serialise them. This, however, prohibits the use of vmalloc and other memory management functions in the implementations of those ioctls, unnecessary complicating any further changes to the code. Let all ioctls first be processed inside the kcov_ioctl() function which should execute the ones that are not compatible with spinlock and then pass control to kcov_ioctl_locked() for all other ones. KCOV_REMOTE_ENABLE is processed both in kcov_ioctl() and kcov_ioctl_locked() as the steps are easily separable. Although it is still compatible with a spinlock, move KCOV_INIT_TRACE handling to kcov_ioctl(), so that the changes from the next commit are easier to follow. Link: https://lkml.kernel.org/r/20220117153634.150357-1-nogikh@google.com Link: https://lkml.kernel.org/r/20220117153634.150357-2-nogikh@google.com Signed-off-by: Aleksandr Nogikh <nogikh@google.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Taras Madan <tarasmadan@google.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Guilherme G. Piccoli
|
f953f140f3 |
panic: move panic_print before kmsg dumpers
The panic_print setting allows users to collect more information in a
panic event, like memory stats, tasks, CPUs backtraces, etc. This is an
interesting debug mechanism, but currently the print event happens *after*
kmsg_dump(), meaning that pstore, for example, cannot collect a dmesg with
the panic_print extra information.
This patch changes that in 2 steps:
(a) The panic_print setting allows to replay the existing kernel log
buffer to the console (bit 5), besides the extra information dump.
This functionality makes sense only at the end of the panic()
function. So, we hereby allow to distinguish the two situations by a
new boolean parameter in the function panic_print_sys_info().
(b) With the above change, we can safely call panic_print_sys_info()
before kmsg_dump(), allowing to dump the extra information when using
pstore or other kmsg dumpers.
The additional messages from panic_print could overwrite the oldest
messages when the buffer is full. The only reasonable solution is to use
a large enough log buffer, hence we added an advice into the kernel
parameters documentation about that.
Link: https://lkml.kernel.org/r/20220214141308.841525-1-gpiccoli@igalia.com
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Acked-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Feng Tang <feng.tang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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Guilherme G. Piccoli
|
8d470a45d1 |
panic: add option to dump all CPUs backtraces in panic_print
Currently the "panic_print" parameter/sysctl allows some interesting debug information to be printed during a panic event. This is useful for example in cases the user cannot kdump due to resource limits, or if the user collects panic logs in a serial output (or pstore) and prefers a fast reboot instead of a kdump. Happens that currently there's no way to see all CPUs backtraces in a panic using "panic_print" on architectures that support that. We do have "oops_all_cpu_backtrace" sysctl, but although partially overlapping in the functionality, they are orthogonal in nature: "panic_print" is a panic tuning (and we have panics without oopses, like direct calls to panic() or maybe other paths that don't go through oops_enter() function), and the original purpose of "oops_all_cpu_backtrace" is to provide more information on oopses for cases in which the users desire to continue running the kernel even after an oops, i.e., used in non-panic scenarios. So, we hereby introduce an additional bit for "panic_print" to allow dumping the CPUs backtraces during a panic event. Link: https://lkml.kernel.org/r/20211109202848.610874-3-gpiccoli@igalia.com Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com> Reviewed-by: Feng Tang <feng.tang@intel.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Guilherme G. Piccoli
|
a1ff1de00d |
docs: sysctl/kernel: add missing bit to panic_print
Patch series "Some improvements on panic_print". This is a mix of a documentation fix with some additions to the "panic_print" syscall / parameter. The goal here is being able to collect all CPUs backtraces during a panic event and also to enable "panic_print" in a kdump event - details of the reasoning and design choices in the patches. This patch (of 3): Commit |
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Lukas Bulwahn
|
92333baace |
taskstats: remove unneeded dead assignment
make clang-analyzer on x86_64 defconfig caught my attention with:
kernel/taskstats.c:120:2: warning: Value stored to 'rc' is never read \
[clang-analyzer-deadcode.DeadStores]
rc = 0;
^
Commit
|
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Tiezhu Yang
|
e7ce750037 |
kasan: no need to unset panic_on_warn in end_report()
panic_on_warn is unset inside panic(), so no need to unset it before calling panic() in end_report(). Link: https://lkml.kernel.org/r/1644324666-15947-6-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Xuefeng Li <lixuefeng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tiezhu Yang
|
d83ce027a5 |
ubsan: no need to unset panic_on_warn in ubsan_epilogue()
panic_on_warn is unset inside panic(), so no need to unset it before calling panic() in ubsan_epilogue(). Link: https://lkml.kernel.org/r/1644324666-15947-5-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Xuefeng Li <lixuefeng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tiezhu Yang
|
1a2383e8b8 |
panic: unset panic_on_warn inside panic()
In the current code, the following three places need to unset panic_on_warn before calling panic() to avoid recursive panics: kernel/kcsan/report.c: print_report() kernel/sched/core.c: __schedule_bug() mm/kfence/report.c: kfence_report_error() In order to avoid copy-pasting "panic_on_warn = 0" all over the places, it is better to move it inside panic() and then remove it from the other places. Link: https://lkml.kernel.org/r/1644324666-15947-4-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Xuefeng Li <lixuefeng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tiezhu Yang
|
ae6694c1aa |
docs: kdump: add scp example to write out the dump file
Except cp and makedumpfile, add scp example to write out the dump file. Link: https://lkml.kernel.org/r/1644324666-15947-3-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Acked-by: Baoquan He <bhe@redhat.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marco Elver <elver@google.com> Cc: Xuefeng Li <lixuefeng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tiezhu Yang
|
b2377d4b94 |
docs: kdump: update description about sysfs file system support
Patch series "Update doc and fix some issues about kdump", v2.
This patch (of 5):
After commit
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Jisheng Zhang
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d339f1584f |
arm64: mm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
Replace the conditional compilation using "#ifdef CONFIG_KEXEC_CORE" by a check for "IS_ENABLED(CONFIG_KEXEC_CORE)", to simplify the code and increase compile coverage. Link: https://lkml.kernel.org/r/20211206160514.2000-5-jszhang@kernel.org Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Baoquan He <bhe@redhat.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Jisheng Zhang
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4ece09be99 |
x86/setup: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
Replace the conditional compilation using "#ifdef CONFIG_KEXEC_CORE" by a check for "IS_ENABLED(CONFIG_KEXEC_CORE)", to simplify the code and increase compile coverage. Link: https://lkml.kernel.org/r/20211206160514.2000-4-jszhang@kernel.org Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Baoquan He <bhe@redhat.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Jisheng Zhang
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d414cb379a |
riscv: mm: init: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
Replace the conditional compilation using "#ifdef CONFIG_KEXEC_CORE" by a check for "IS_ENABLED(CONFIG_KEXEC_CORE)", to simplify the code and increase compile coverage. Link: https://lkml.kernel.org/r/20211206160514.2000-3-jszhang@kernel.org Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Acked-by: Baoquan He <bhe@redhat.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Jisheng Zhang
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f05fa10901 |
kexec: make crashk_res, crashk_low_res and crash_notes symbols always visible
Patch series "kexec: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef", v2. Replace the conditional compilation using "#ifdef CONFIG_KEXEC_CORE" by a check for "IS_ENABLED(CONFIG_KEXEC_CORE)", to simplify the code and increase compile coverage. I only modified x86, arm, arm64 and riscv, other architectures such as sh, powerpc and s390 are better to be kept kexec code as-is so they are not touched. This patch (of 5): Make the forward declarations of crashk_res, crashk_low_res and crash_notes always visible. Code referring to these symbols can then just check for IS_ENABLED(CONFIG_KEXEC_CORE), instead of requiring conditional compilation using an #ifdef, thus preparing to increase compile coverage and simplify the code. Link: https://lkml.kernel.org/r/20211206160514.2000-1-jszhang@kernel.org Link: https://lkml.kernel.org/r/20211206160514.2000-2-jszhang@kernel.org Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Baoquan He <bhe@redhat.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Sebastian Andrzej Siewior
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b1e2c8df0f |
cgroup: use irqsave in cgroup_rstat_flush_locked().
All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock either with spin_lock_irq() or spin_lock_irqsave(). cgroup_rstat_flush_locked() itself acquires cgroup_rstat_cpu_lock which is a raw_spin_lock. This lock is also acquired in cgroup_rstat_updated() in IRQ context and therefore requires _irqsave() locking suffix in cgroup_rstat_flush_locked(). Since there is no difference between spin_lock_t and raw_spin_lock_t on !RT lockdep does not complain here. On RT lockdep complains because the interrupts were not disabled here and a deadlock is possible. Acquire the raw_spin_lock_t with disabled interrupts. Link: https://lkml.kernel.org/r/20220301122143.1521823-2-bigeasy@linutronix.de Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Tejun Heo <tj@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Zefan Li <lizefan.x@bytedance.com> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Subject: cgroup: add a comment to cgroup_rstat_flush_locked(). Add a comment why spin_lock_irq() -> raw_spin_lock_irqsave() is needed. Link: https://lkml.kernel.org/r/Yh+DOK73hfVV5ThX@linutronix.de Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Tejun Heo <tj@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Helge Deller
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2cd50532ce |
fat: use pointer to simple type in put_user()
The put_user(val,ptr) macro wants a pointer to a simple type, but in
fat_ioctl_filldir() the d_name field references an "array of chars". Be
more accurate and explicitly give the pointer to the first character of
the d_name[] array.
I noticed that issue while trying to optimize the parisc put_user()
macro and used an intermediate variable to store the pointer. In that
case I got this error:
In file included from include/linux/uaccess.h:11,
from include/linux/compat.h:17,
from fs/fat/dir.c:18:
fs/fat/dir.c: In function `fat_ioctl_filldir':
fs/fat/dir.c:725:33: error: invalid initializer
725 | if (put_user(0, d2->d_name) || \
| ^~
include/asm/uaccess.h:152:33: note: in definition of macro `__put_user'
152 | __typeof__(ptr) __ptr = ptr; \
| ^~~
fs/fat/dir.c:759:1: note: in expansion of macro `FAT_IOCTL_FILLDIR_FUNC'
759 | FAT_IOCTL_FILLDIR_FUNC(fat_ioctl_filldir, __fat_dirent)
Andreas Schwab <schwab@linux-m68k.org> suggested to use
__typeof__(&*(ptr)) __ptr = ptr;
instead. This works, but nevertheless it's probably reasonable to fix
the original caller too.
Link: https://lkml.kernel.org/r/Ygo+A9MREmC1H3kr@p100
Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: David Laight <David.Laight@aculab.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Qinghua Jin
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9ce3c0d26c |
minix: fix bug when opening a file with O_DIRECT
Testcase: 1. create a minix file system and mount it 2. open a file on the file system with O_RDWR|O_CREAT|O_TRUNC|O_DIRECT 3. open fails with -EINVAL but leaves an empty file behind. All other open() failures don't leave the failed open files behind. It is hard to check the direct_IO op before creating the inode. Just as ext4 and btrfs do, this patch will resolve the issue by allowing to create the file with O_DIRECT but returning error when writing the file. Link: https://lkml.kernel.org/r/20220107133626.413379-1-qhjin.dev@gmail.com Signed-off-by: Qinghua Jin <qhjin.dev@gmail.com> Reported-by: Colin Ian King <colin.king@intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Andrei Vagin
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aeb213cdde |
fs/pipe.c: local vars have to match types of proper pipe_inode_info fields
head, tail, ring_size are declared as unsigned int, so all local variables that operate with these fields have to be unsigned to avoid signed integer overflow. Right now, it isn't an issue because the maximum pipe size is limited by 1U<<31. Link: https://lkml.kernel.org/r/20220106171946.36128-1-avagin@gmail.com Signed-off-by: Andrei Vagin <avagin@gmail.com> Suggested-by: Dmitry Safonov <0x7f454c46@gmail.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Andrei Vagin
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5a519c8fe4 |
fs/pipe: use kvcalloc to allocate a pipe_buffer array
Right now, kcalloc is used to allocate a pipe_buffer array. The size of the pipe_buffer struct is 40 bytes. kcalloc allows allocating reliably chunks with sizes less or equal to PAGE_ALLOC_COSTLY_ORDER (3). It means that the maximum pipe size is 3.2MB in this case. In CRIU, we use pipes to dump processes memory. CRIU freezes a target process, injects a parasite code into it and then this code splices memory into pipes. If a maximum pipe size is small, we need to do many iterations or create many pipes. kvcalloc attempt to allocate physically contiguous memory, but upon failure, fall back to non-contiguous (vmalloc) allocation and so it isn't limited by PAGE_ALLOC_COSTLY_ORDER. The maximum pipe size for non-root users is limited by the /proc/sys/fs/pipe-max-size sysctl that is 1MB by default, so only the root user will be able to trigger vmalloc allocations. Link: https://lkml.kernel.org/r/20220104171058.22580-1-avagin@gmail.com Signed-off-by: Andrei Vagin <avagin@gmail.com> Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Randy Dunlap
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f9a40b0890 |
init/main.c: return 1 from handled __setup() functions
initcall_blacklist() should return 1 to indicate that it handled its cmdline arguments. set_debug_rodata() should return 1 to indicate that it handled its cmdline arguments. Print a warning if the option string is invalid. This prevents these strings from being added to the 'init' program's environment as they are not init arguments/parameters. Link: https://lkml.kernel.org/r/20220221050901.23985-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru> Cc: Ingo Molnar <mingo@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Randy Dunlap
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abc7da58c4 |
init.h: improve __setup and early_param documentation
Igor noted in [1] that there are quite a few __setup() handling
functions that return incorrect values. Doing this can be harmless, but
it can also cause strings to be added to init's argument or environment
list, polluting them.
Since __setup() handling and return values are not documented, first add
documentation for that. Also add more documentation for early_param()
handling and return values.
For __setup() functions, returning 0 (not handled) has questionable
value if it is just a malformed option value, as in
rodata=junk
since returning 0 would just cause "rodata=junk" to be added to init's
environment unnecessarily:
Run /sbin/init as init process
with arguments:
/sbin/init
with environment:
HOME=/
TERM=linux
splash=native
rodata=junk
Also, there are no recommendations on whether to print a warning when an
unknown parameter value is seen. I am not addressing that here.
[1] lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Link: https://lkml.kernel.org/r/20220221050852.1147-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mark-PK Tsai
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105e8c2e47 |
init: use ktime_us_delta() to make initcall_debug log more precise
Use ktime_us_delta() to make the initcall_debug log more precise than right shifting the result of ktime_to_ns() by 10 bits. Link: https://lkml.kernel.org/r/20220209053350.15771-1-mark-pk.tsai@mediatek.com Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com> Reviewed-by: Andrew Halaney <ahalaney@redhat.com> Tested-by: Andrew Halaney <ahalaney@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Kees Cook <keescook@chromium.org> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: YJ Chiang <yj.chiang@mediatek.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Sagar Patel
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c882c6b1cb |
checkpatch: use python3 to find codespell dictionary
Commit
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Joe Perches
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05dc40e694 |
checkpatch: add early_param exception to blank line after struct/function test
Add early_param as another exception to the blank line preferred after function/struct/union declaration or definition test. Link: https://lkml.kernel.org/r/3bd6ada59f411a7685d7e64eeb670540d4bfdcde.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Joe Perches
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481efd7bd6 |
checkpatch: add --fix option for some TRAILING_STATEMENTS
Single line code like: if (foo) bar; should generally be written: if (foo) bar; Add a --fix test to do so. This fix is not done when an ASSIGN_IN_IF in the same line exists. Link: https://lkml.kernel.org/r/20220128185924.80137-2-joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Joe Perches
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6e8f42dc9c |
checkpatch: prefer MODULE_LICENSE("GPL") over MODULE_LICENSE("GPL v2")
There is no effective difference.
Given the large number of uses of "GPL v2", emit this message only for
patches as a trivial treeside sed could be done one day.
Ref: commit
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Randy Dunlap
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2699e5143c |
lib: bitmap: fix many kernel-doc warnings
Fix kernel-doc warings in lib/bitmap.c: lib/bitmap.c:498: warning: Function parameter or member 'buf' not described in 'bitmap_print_to_buf' lib/bitmap.c:498: warning: Function parameter or member 'maskp' not described in 'bitmap_print_to_buf' lib/bitmap.c:498: warning: Function parameter or member 'nmaskbits' not described in 'bitmap_print_to_buf' lib/bitmap.c:498: warning: Function parameter or member 'off' not described in 'bitmap_print_to_buf' lib/bitmap.c:498: warning: Function parameter or member 'count' not described in 'bitmap_print_to_buf' lib/bitmap.c:561: warning: contents before sections lib/bitmap.c:606: warning: Function parameter or member 'buf' not described in 'bitmap_print_list_to_buf' lib/bitmap.c:606: warning: Function parameter or member 'maskp' not described in 'bitmap_print_list_to_buf' lib/bitmap.c:606: warning: Function parameter or member 'nmaskbits' not described in 'bitmap_print_list_to_buf' lib/bitmap.c:606: warning: Function parameter or member 'off' not described in 'bitmap_print_list_to_buf' lib/bitmap.c:606: warning: Function parameter or member 'count' not described in 'bitmap_print_list_to_buf' lib/bitmap.c:819: warning: missing initial short description on line: * bitmap_parselist_user() This still leaves 15 warnings for function return values not described, similar to this one: bitmap.c:890: warning: No description found for return value of 'bitmap_parse' Link: https://lkml.kernel.org/r/20220306065823.5153-1-rdunlap@infradead.org Fixes: |
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Feng Tang
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1bf18da621 |
lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGN option
0Day robots reported there is compiling issue for 'csky' ARCH when
CONFIG_DEBUG_FORCE_DATA_SECTION_ALIGNED is enabled [1]:
All errors (new ones prefixed by >>):
{standard input}: Assembler messages:
>> {standard input}:2277: Error: pcrel offset for branch to .LS000B too far (0x3c)
Which was discussed in [2]. And as there is no solution for csky yet, add
some dependency for this config to limit it to several ARCHs which have no
compiling issue so far.
[1]. https://lore.kernel.org/lkml/202202271612.W32UJAj2-lkp@intel.com/
[2]. https://www.spinics.net/lists/linux-kbuild/msg30298.html
Link: https://lkml.kernel.org/r/20220304021100.GN4548@shbuild999.sh.intel.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Guo Ren <guoren@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andy Shevchenko
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25cb5b7ac6 |
bitfield: add explicit inclusions to the example
It's not obvious that bitfield.h doesn't guarantee the bits.h inclusion and the example in the former is confusing. Some developers think that it's okay to just include bitfield.h to get it working. Change example to explicitly include necessary headers in order to avoid confusion. Link: https://lkml.kernel.org/r/20220207123341.47533-1-andriy.shevchenko@linux.intel.com Fixes: |
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Christophe Leroy
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f334f5668b |
ilog2: force inlining of __ilog2_u32() and __ilog2_u64()
Building a kernel with CONFIG_CC_OPTIMISE_FOR_SIZE leads to __ilog2_u32() being duplicated 50 times and __ilog2_u64() 3 times in vmlinux on a tiny powerpc32 config. __ilog2_u32() being 2 instructions it is not worth being kept out of line, so force inlining. Allthough the u64 version is a bit bigger, there is still a small benefit in keeping it inlined. On a 64 bits config there's a real benefit. With this change the size of vmlinux text is reduced by 1 kbytes, which is approx 50% more than the size of the removed functions. Before the patch there is for instance: c00d2a94 <__ilog2_u32>: c00d2a94: 7c 63 00 34 cntlzw r3,r3 c00d2a98: 20 63 00 1f subfic r3,r3,31 c00d2a9c: 4e 80 00 20 blr c00d36d8 <__order_base_2>: c00d36d8: 28 03 00 01 cmplwi r3,1 c00d36dc: 40 81 00 2c ble c00d3708 <__order_base_2+0x30> c00d36e0: 94 21 ff f0 stwu r1,-16(r1) c00d36e4: 7c 08 02 a6 mflr r0 c00d36e8: 38 63 ff ff addi r3,r3,-1 c00d36ec: 90 01 00 14 stw r0,20(r1) c00d36f0: 4b ff f3 a5 bl c00d2a94 <__ilog2_u32> c00d36f4: 80 01 00 14 lwz r0,20(r1) c00d36f8: 38 63 00 01 addi r3,r3,1 c00d36fc: 7c 08 03 a6 mtlr r0 c00d3700: 38 21 00 10 addi r1,r1,16 c00d3704: 4e 80 00 20 blr c00d3708: 38 60 00 00 li r3,0 c00d370c: 4e 80 00 20 blr With the patch it has become: c00d356c <__order_base_2>: c00d356c: 28 03 00 01 cmplwi r3,1 c00d3570: 40 81 00 14 ble c00d3584 <__order_base_2+0x18> c00d3574: 38 63 ff ff addi r3,r3,-1 c00d3578: 7c 63 00 34 cntlzw r3,r3 c00d357c: 20 63 00 20 subfic r3,r3,32 c00d3580: 4e 80 00 20 blr c00d3584: 38 60 00 00 li r3,0 c00d3588: 4e 80 00 20 blr No more need for __order_base_2() to setup a stack frame and save/restore caller address. And the following 'add 1' is merged in the subtract. Another typical use of it: c080ff28 <hugepagesz_setup>: ... c080fff8: 7f c3 f3 78 mr r3,r30 c080fffc: 4b 8f 81 f1 bl c01081ec <__ilog2_u32> c0810000: 38 63 ff f2 addi r3,r3,-14 ... Becomes c080ff1c <hugepagesz_setup>: ... c080ffec: 7f c3 00 34 cntlzw r3,r30 c080fff0: 20 63 00 11 subfic r3,r3,17 ... Here no need to move r30 argument to r3 then substract 14 to result. Just work on r30 and merge the 'sub 14' with the 'sub from 31'. Link: https://lkml.kernel.org/r/803a2ac3d923ebcfd0dd40f5886b05cae7bb0aba.1644243860.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Rasmus Villemoes
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14e83077d5 |
include: drop pointless __compiler_offsetof indirection
(1) compiler_types.h is unconditionally included via an -include flag
(see scripts/Makefile.lib), and it defines __compiler_offsetof
unconditionally. So testing for definedness of __compiler_offsetof is
mostly pointless.
(2) Every relevant compiler provides __builtin_offsetof (even sparse
has had that for 14 years), and if for whatever reason one would end
up picking up the poor man's fallback definition (C file compiler with
completely custom CFLAGS?), newer clang versions won't treat the
result as an Integer Constant Expression, so if used in place where
such is required (static initializer or static_assert), one would get
errors like
t.c:11:16: error: static_assert expression is not an integral constant expression
t.c:11:16: note: cast that performs the conversions of a reinterpret_cast is not allowed in a constant expression
t.c:4:33: note: expanded from macro 'offsetof'
#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER)
So just define offsetof unconditionally and directly in terms of
__builtin_offsetof.
Link: https://lkml.kernel.org/r/20220202102147.326672-1-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kees Cook
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f9b3cd2457 |
Kconfig.debug: make DEBUG_INFO selectable from a choice
Currently it's not possible to enable DEBUG_INFO for an all*config build, since it is marked as "depends on !COMPILE_TEST". This generally makes sense because a debug build of an all*config target ends up taking much longer and the output is much larger. Having this be "default off" makes sense. However, there are cases where enabling DEBUG_INFO for such builds is useful for doing treewide A/B comparisons of build options, etc. Make DEBUG_INFO selectable from any of the DWARF version choice options, with DEBUG_INFO_NONE being the default for COMPILE_TEST. The mutually exclusive relationship between DWARF5 and BTF must be inverted, but the result remains the same. Additionally moves DEBUG_KERNEL and DEBUG_MISC up to the top of the menu because they were enabling features _above_ it, making it weird to navigate menuconfig. [keescook@chromium.org: make DEBUG_INFO always default=n] Link: https://lkml.kernel.org/r/20220128214131.580131-1-keescook@chromium.org Link: https://lore.kernel.org/lkml/YfRY6+CaQxX7O8vF@dev-arch.archlinux-ax161 Link: https://lkml.kernel.org/r/20220125075126.891825-1-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Suggested-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |