kernel.git/Documentation/ABI/stable, branch linux-6.3.y

docs: sysfs-block: document hidden sysfs entry

2023-03-07T23:40:52Z

/sys/block//hidden is undocumented. Document it. Signed-off-by: Sagi Grimberg Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20230303084323.228098-1-sagi@grimberg.me Signed-off-by: Jens Axboe

Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-24T01:09:35Z

Pull MM updates from Andrew Morton: - Daniel Verkamp has contributed a memfd series ("mm/memfd: add F_SEAL_EXEC") which permits the setting of the memfd execute bit at memfd creation time, with the option of sealing the state of the X bit. - Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset() thread-safe for pmd unshare") which addresses a rare race condition related to PMD unsharing. - Several folioification patch serieses from Matthew Wilcox, Vishal Moola, Sidhartha Kumar and Lorenzo Stoakes - Johannes Weiner has a series ("mm: push down lock_page_memcg()") which does perform some memcg maintenance and cleanup work. - SeongJae Park has added DAMOS filtering to DAMON, with the series "mm/damon/core: implement damos filter". These filters provide users with finer-grained control over DAMOS's actions. SeongJae has also done some DAMON cleanup work. - Kairui Song adds a series ("Clean up and fixes for swap"). - Vernon Yang contributed the series "Clean up and refinement for maple tree". - Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It adds to MGLRU an LRU of memcgs, to improve the scalability of global reclaim. - David Hildenbrand has added some userfaultfd cleanup work in the series "mm: uffd-wp + change_protection() cleanups". - Christoph Hellwig has removed the generic_writepages() library function in the series "remove generic_writepages". - Baolin Wang has performed some maintenance on the compaction code in his series "Some small improvements for compaction". - Sidhartha Kumar is doing some maintenance work on struct page in his series "Get rid of tail page fields". - David Hildenbrand contributed some cleanup, bugfixing and generalization of pte management and of pte debugging in his series "mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with swap PTEs". - Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation flag in the series "Discard __GFP_ATOMIC". - Sergey Senozhatsky has improved zsmalloc's memory utilization with his series "zsmalloc: make zspage chain size configurable". - Joey Gouly has added prctl() support for prohibiting the creation of writeable+executable mappings. The previous BPF-based approach had shortcomings. See "mm: In-kernel support for memory-deny-write-execute (MDWE)". - Waiman Long did some kmemleak cleanup and bugfixing in the series "mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF". - T.J. Alumbaugh has contributed some MGLRU cleanup work in his series "mm: multi-gen LRU: improve". - Jiaqi Yan has provided some enhancements to our memory error statistics reporting, mainly by presenting the statistics on a per-node basis. See the series "Introduce per NUMA node memory error statistics". - Mel Gorman has a second and hopefully final shot at fixing a CPU-hog regression in compaction via his series "Fix excessive CPU usage during compaction". - Christoph Hellwig does some vmalloc maintenance work in the series "cleanup vfree and vunmap". - Christoph Hellwig has removed block_device_operations.rw_page() in ths series "remove ->rw_page". - We get some maple_tree improvements and cleanups in Liam Howlett's series "VMA tree type safety and remove __vma_adjust()". - Suren Baghdasaryan has done some work on the maintainability of our vm_flags handling in the series "introduce vm_flags modifier functions". - Some pagemap cleanup and generalization work in Mike Rapoport's series "mm, arch: add generic implementation of pfn_valid() for FLATMEM" and "fixups for generic implementation of pfn_valid()" - Baoquan He has done some work to make /proc/vmallocinfo and /proc/kcore better represent the real state of things in his series "mm/vmalloc.c: allow vread() to read out vm_map_ram areas". - Jason Gunthorpe rationalized the GUP system's interface to the rest of the kernel in the series "Simplify the external interface for GUP". - SeongJae Park wishes to migrate people from DAMON's debugfs interface over to its sysfs interface. To support this, we'll temporarily be printing warnings when people use the debugfs interface. See the series "mm/damon: deprecate DAMON debugfs interface". - Andrey Konovalov provided the accurately named "lib/stackdepot: fixes and clean-ups" series. - Huang Ying has provided a dramatic reduction in migration's TLB flush IPI rates with the series "migrate_pages(): batch TLB flushing". - Arnd Bergmann has some objtool fixups in "objtool warning fixes". * tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (505 commits) include/linux/migrate.h: remove unneeded externs mm/memory_hotplug: cleanup return value handing in do_migrate_range() mm/uffd: fix comment in handling pte markers mm: change to return bool for isolate_movable_page() mm: hugetlb: change to return bool for isolate_hugetlb() mm: change to return bool for isolate_lru_page() mm: change to return bool for folio_isolate_lru() objtool: add UACCESS exceptions for __tsan_volatile_read/write kmsan: disable ftrace in kmsan core code kasan: mark addr_has_metadata __always_inline mm: memcontrol: rename memcg_kmem_enabled() sh: initialize max_mapnr m68k/nommu: add missing definition of ARCH_PFN_OFFSET mm: percpu: fix incorrect size in pcpu_obj_full_size() maple_tree: reduce stack usage with gcc-9 and earlier mm: page_alloc: call panic() when memoryless node allocation fails mm: multi-gen LRU: avoid futile retries migrate_pages: move THP/hugetlb migration support check to simplify code migrate_pages: batch flushing TLB migrate_pages: share more code between _unmap and _move ...

Merge tag 'platform-drivers-x86-v6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2023-02-22T01:32:50Z

Pull x86 platform driver updates from Hans de Goede: - AMD PMC: Improvements to aid s2idle debugging - Dell WMI-DDV: hwmon support - INT3472 camera sensor power-management: Improve privacy LED support - Intel VSEC: Base TPMI (Topology Aware Register and PM Capsule Interface) support - Mellanox: SN5600 and Nvidia L1 switch support - Microsoft Surface Support: Various cleanups + code improvements - tools/intel-speed-select: Various improvements - Miscellaneous other cleanups / fixes * tag 'platform-drivers-x86-v6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits) platform/x86: nvidia-wmi-ec-backlight: Add force module parameter platform/x86/amd/pmf: Add depends on CONFIG_POWER_SUPPLY platform/x86: dell-ddv: Prefer asynchronous probing platform/x86: dell-ddv: Add hwmon support Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces platform: mellanox: mlx-platform: Move bus shift assignment out of the loop platform: mellanox: mlx-platform: Add mux selection register to regmap platform_data/mlxreg: Add field with mapped resource address platform/mellanox: mlxreg-hotplug: Allow more flexible hotplug events configuration platform: mellanox: Extend all systems with I2C notification callback platform: mellanox: Split logic in init and exit flow platform: mellanox: Split initialization procedure platform: mellanox: Introduce support of new Nvidia L1 switch platform: mellanox: Introduce support for next-generation 800GB/s switch platform: mellanox: Cosmetic changes - rename to more common name platform: mellanox: Change "reset_pwr_converter_fail" attribute platform: mellanox: Introduce support for rack manager switch MAINTAINERS: dell-wmi-sysman: drop Divya Bharathi x86/platform/uv: Make kobj_type structure constant platform/x86: think-lmi: Make kobj_type structure constant ...

Merge tag 'for-linus-6.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2023-02-22T01:07:39Z

Pull xen updates from Juergen Gross: - help deprecate the /proc/xen files by making the related information available via sysfs - mark the Xen variants of play_dead "noreturn" - support a shared Xen platform interrupt - several small cleanups and fixes * tag 'for-linus-6.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: sysfs: make kobj_type structure constant x86/Xen: drop leftover VM-assist uses xen: Replace one-element array with flexible-array member xen/grant-dma-iommu: Implement a dummy probe_device() callback xen/pvcalls-back: fix permanently masked event channel xen: Allow platform PCI interrupt to be shared x86/xen/time: prefer tsc as clocksource when it is invariant x86/xen: mark xen_pv_play_dead() as __noreturn x86/xen: don't let xen_pv_play_dead() return drivers/xen/hypervisor: Expose Xen SIF flags to userspace

Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces

2023-02-13T11:07:50Z

Add description for new attributes added for rack manager switch and NG800 family systems. Attributes related to power converter board: - reset_pwr_converter_fail; - pwr_converter_prog_en; Attributes related to External Root of Trust (EROT) devices recovery: - erot1_ap_reset; - erot2_ap_reset; - erot1_recovery; - erot2_recovery; - erot1_reset; - erot2_reset; - erot1_wp; - erot2_wp; - spi_chnl_select; Attributes related to clock board failures and recovery: - clk_brd1_boot_fail; - clk_brd2_boot_fail; - clk_brd_fail; - clk_brd_prog_en; Attributes related to power failures: - reset_ac_ok_fail; - asic_pg_fail; Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230208063331.15560-14-vadimp@nvidia.com Signed-off-by: Hans de Goede

drivers/xen/hypervisor: Expose Xen SIF flags to userspace

2023-02-13T05:53:19Z

/proc/xen is a legacy pseudo filesystem which predates Xen support getting merged into Linux. It has largely been replaced with more normal locations for data (/sys/hypervisor/ for info, /dev/xen/ for user devices). We want to compile xenfs support out of the dom0 kernel. There is one item which only exists in /proc/xen, namely /proc/xen/capabilities with "control_d" being the signal of "you're in the control domain". This ultimately comes from the SIF flags provided at VM start. This patch exposes all SIF flags in /sys/hypervisor/start_flags/ as boolean files, one for each bit, returning '1' if set, '0' otherwise. Two known flags, 'privileged' and 'initdomain', are explicitly named, and all remaining flags can be accessed via generically named files, as suggested by Andrew Cooper. Signed-off-by: Per Bilse Reviewed-by: Juergen Gross Link: https://lore.kernel.org/r/20230103130213.2129753-1-per.bilse@citrix.com Signed-off-by: Juergen Gross

mm: memory-failure: document memory failure stats

2023-02-03T06:33:28Z

Add documentation for memory_failure's per NUMA node sysfs entries Link: https://lkml.kernel.org/r/20230120034622.2698268-4-jiaqiyan@google.com Signed-off-by: Jiaqi Yan Acked-by: Naoya Horiguchi Cc: David Rientjes Cc: Kefeng Wang Cc: Tony Luck Cc: Yang Shi Signed-off-by: Andrew Morton

block: save user max_sectors limit

2023-01-29T22:18:33Z

The user can set the max_sectors limit to any valid value via sysfs /sys/block//queue/max_sectors_kb attribute. If the device limits are ever rescanned, though, the limit reverts back to the potentially artificially low BLK_DEF_MAX_SECTORS value. Preserve the user's setting as the max_sectors limit as long as it's valid. The user can reset back to defaults by writing 0 to the sysfs file. Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20230105205146.3610282-3-kbusch@meta.com Signed-off-by: Jens Axboe

Merge tag 'dmaengine-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2022-12-19T14:54:17Z

Pull dmaengine updates from Vinod Koul: "New support: - Qualcomm SDM670, SM6115 and SM6375 GPI controller support - Ingenic JZ4755 dmaengine support - Removal of iop-adma driver Updates: - Tegra support for dma-channel-mask - at_hdmac cleanup and virt-chan support for this driver" * tag 'dmaengine-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (46 commits) dmaengine: Revert "dmaengine: remove s3c24xx driver" dmaengine: tegra: Add support for dma-channel-mask dt-bindings: dmaengine: Add dma-channel-mask to Tegra GPCDMA dmaengine: idxd: Remove linux/msi.h include dt-bindings: dmaengine: qcom: gpi: add compatible for SM6375 dmaengine: idxd: Fix crc_val field for completion record dmaengine: at_hdmac: Convert driver to use virt-dma dmaengine: at_hdmac: Remove unused member of at_dma_chan dmaengine: at_hdmac: Rename "chan_common" to "dma_chan" dmaengine: at_hdmac: Rename "dma_common" to "dma_device" dmaengine: at_hdmac: Use bitfield access macros dmaengine: at_hdmac: Keep register definitions and structures private to at_hdmac.c dmaengine: at_hdmac: Set include entries in alphabetic order dmaengine: at_hdmac: Use pm_ptr() dmaengine: at_hdmac: Use devm_clk_get() dmaengine: at_hdmac: Use devm_platform_ioremap_resource dmaengine: at_hdmac: Use devm_kzalloc() and struct_size() dmaengine: at_hdmac: Introduce atc_get_llis_residue() dmaengine: at_hdmac: s/atc_get_bytes_left/atc_get_residue dmaengine: at_hdmac: Pass residue by address to avoid unnecessary implicit casts ...

accessibility: speakup: phonetic spelling while arrowing letter by letter

2022-11-23T18:47:15Z

This patch includes an enhancement requested frequently on the mailing list.[1][2] It adds a variable, cur_phonetic in the spk_vars, which can be set as a module parameter, as well as in /sys/speakup/cur_phonetic. This patch also documents cur_phonetic as a sysfs attribute in sysfs-driver-speakup. When cur_phonetic=1, it causes speakup to speak letters phonetically if paused on the character while arrowing through a word. When a user does not set cur_phonetic to any value, the default value for it would be 0. [1]: https://github.com/linux-speakup/speakup/issues/6 [2]: https://github.com/linux-speakup/speakup/issues/5 since V1: - removed unnecessary lines Signed-off-by: Mushahid Hussain Reviewed-by: Samuel Thibault Link: https://lore.kernel.org/r/20221115100530.91174-3-mushi.shar@gmail.com Signed-off-by: Greg Kroah-Hartman