- 02 Nov, 2021 15 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spiLinus Torvalds authored
Pull spi updates from Mark Brown: "This is quite a quiet release for SPI, there's been a bit of cleanup to the core from Uwe but nothing functionality wise. We have added several new drivers, Cadence XSPI, Ingenic JZ47xx, Qualcomm SC7280 and SC7180 and Xilinx Versal OSPI" * tag 'spi-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (41 commits) spi: Convert NXP flexspi to json schema spi: spi-geni-qcom: Add support for GPI dma spi: fsi: Fix contention in the FSI2SPI engine spi: spi-rpc-if: Check return value of rpcif_sw_init() spi: tegra210-quad: Put device into suspend on driver removal spi: tegra20-slink: Put device into suspend on driver removal spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe() spi: at91-usart: replacing legacy gpio interface for gpiod spi: replace snprintf in show functions with sysfs_emit spi: cadence: Add of_node_put() before return spi: orion: Add of_node_put() before goto spi: cadence-quadspi: fix dma_unmap_single() call spi: tegra20: fix build with CONFIG_PM_SLEEP=n spi: bcm-qspi: add support for 3-wire mode for half duplex transfer spi: bcm-qspi: Add mspi spcr3 32/64-bits xfer mode spi: Make several public functions private to spi.c spi: Reorder functions to simplify the next commit spi: Remove unused function spi_busnum_to_master() spi: Move comment about chipselect check to the right place spi: fsi: Print status on error ...
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulatorLinus Torvalds authored
Pull regulator updates from Mark Brown: "Thanks to the removal of the unused TPS80021 driver the regulator updates for this cycle actually have a negative diffstat. Otherwise it's been quite a quiet release, lots of fixes and small improvements with the biggest individual changes being several conversions of DT bindings to YAML format" * tag 'regulator-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (34 commits) regulator: Don't error out fixed regulator in regulator_sync_voltage() regulator: tps80031: Remove driver regulator: Fix SY7636A breakage regulator: uniphier: Add binding for NX1 SoC regulator: uniphier: Add USB-VBUS compatible string for NX1 SoC regulator: qcom,rpmh: Add compatible for PM6350 regulator: qcom-rpmh: Add PM6350 regulators regulator: sy7636a: Remove requirement on sy7636a mfd regulator: tps62360: replacing legacy gpio interface for gpiod regulator: lp872x: Remove lp872x_dvs_state regulator: lp872x: replacing legacy gpio interface for gpiod regulator: dt-bindings: samsung,s5m8767: convert to dtschema regulator: dt-bindings: samsung,s2mpa01: convert to dtschema regulator: dt-bindings: samsung,s2m: convert to dtschema dt-bindings: clock: samsung,s2mps11: convert to dtschema regulator: dt-bindings: samsung,s5m8767: correct s5m8767,pmic-buck-default-dvs-idx property regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is disabled regulator: dt-bindings: maxim,max8973: convert to dtschema regulator: dt-bindings: maxim,max8997: convert to dtschema regulator: dt-bindings: maxim,max8952: convert to dtschema ...
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmapLinus Torvalds authored
Pull regmap update from Mark Brown: "A single change to use the maximum transfer and message sizes advertised by SPI controllers to configure limits within the regmap core, ensuring better interoperation" * tag 'regmap-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: spi: Set regmap max raw r/w from max_transfer_size
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git://git.linaro.org/landing-teams/working/fujitsu/integrationLinus Torvalds authored
Pull mailbox updates from Jassi Brar: "qcom: - add support for qcm2290 - consolidate msm8994 type apcs_data mtk: - fix clock id usage apple: - add driver for ASC/M3 controllers pcc: - reorganise PCC pcc_mbox_request_channel - add support for PCCT extended PCC subspaces misc: - make use of devm_platform_ioremap_resource() - change Altera, PCC and Apple mailbox maintainers" * tag 'mailbox-v5.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration: (38 commits) mailbox: imx: support i.MX8ULP S4 MU dt-bindings: mailbox: imx-mu: add i.MX8ULP S400 MU support ACPI/PCC: Add maintainer for PCC mailbox driver mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe mailbox: pcc: Add support for PCCT extended PCC subspaces(type 3/4) mailbox: pcc: Drop handling invalid bit-width in {read,write}_register mailbox: pcc: Avoid accessing PCCT table in pcc_send_data and pcc_mbox_irq mailbox: pcc: Add PCC register bundle and associated accessor functions mailbox: pcc: Rename doorbell ack to platform interrupt ack register mailbox: pcc: Use PCC mailbox channel pointer instead of standard mailbox: pcc: Add pcc_mbox_chan structure to hold shared memory region info mailbox: pcc: Consolidate subspace doorbell register parsing mailbox: pcc: Consolidate subspace interrupt information parsing mailbox: pcc: Refactor all PCC channel information into a structure mailbox: pcc: Fix kernel doc warnings mailbox: apple: Add driver for Apple mailboxes dt-bindings: mailbox: Add Apple mailbox bindings MAINTAINERS: Add Apple mailbox files mailbox: mtk-cmdq: Fix local clock ID usage mailbox: mtk-cmdq: Validate alias_id on probe ...
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC and MEMSTICK updates from Ulf Hansson: "MMC core: - Update maintainer and URL for the mmc-utils - Set default label for slot-gpio in case of no con-id - Convert MMC card DT bindings to a schema - Add optional host specific tuning support for eMMC HS400 - Add error handling of add_disk() MMC host: - mtk-sd: Add host specific tuning support for eMMC HS400 - mtk-sd: Make DMA handling more robust - dw_mmc: Prevent hangs for some data writes - dw_mmc: Move away from using the ->init_card() callback - mxs-mmc: Manage the regulator in the error path and in ->remove() - sdhci-cadence: Add support for the Microchip MPFS variant - sdhci-esdhc-imx: Add support for the NXP S32G2 variant - sdhci-of-arasan: Add support for the Intel Thunder Bay variant - sdhci-omap: Prepare to support more SoCs - sdhci-omap: Add support for omap3 and omap4 variants - sdhci-omap: Add support for power management - sdhci-omap: Add support for system wakeups - sdhci-msm: Add support for the msm8226 variant - sdhci-sprd: Verify that the DLL locks according to spec MEMSTICK: - Add error handling of add_disk() - A couple of small fixes and improvements" * tag 'mmc-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (60 commits) docs: mmc: update maintainer name and URL mmc: dw_mmc: exynos: Fix spelling mistake "candiates" -> candidates MAINTAINERS: drop obsolete file pattern in SDHCI DRIVER section mmc: sdhci-esdhc-imx: add NXP S32G2 support dt-bindings: mmc: fsl-imx-esdhc: add NXP S32G2 support mmc: dw_mmc: Drop use of ->init_card() callback mmc: sdhci-omap: Fix build if CONFIG_PM_SLEEP is not set mmc: sdhci-omap: Remove forward declaration of sdhci_omap_context_save() memstick: r592: Fix a UAF bug when removing the driver mmc: mxs-mmc: disable regulator on error and in the remove function mmc: sdhci-omap: Configure optional wakeirq mmc: sdhci-omap: Allow SDIO card power off and enable aggressive PM mmc: sdhci-omap: Implement PM runtime functions mmc: sdhci-omap: Add omap_offset to support omap3 and earlier mmc: sdhci-omap: Handle voltages to add support omap4 dt-bindings: sdhci-omap: Update binding for legacy SoCs mmc: sdhci-pci: Remove dead code (rst_n_gpio et al) mmc: sdhci-pci: Remove dead code (cd_gpio, cd_irq et al) mmc: sdhci-pci: Remove dead code (struct sdhci_pci_data et al) mmc: sdhci: Remove unused prototype declaration in the header ...
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https://github.com/cminyard/linux-ipmiLinus Torvalds authored
Pull IPMI driver updates from Corey Minyard: "A new type of low-level IPMI driver is added for direct communication over the IPMI message bus without a BMC between the driver and the bus. Other than that, lots of little bug fixes and enhancements" * tag 'for-linus-5.16-1' of https://github.com/cminyard/linux-ipmi: ipmi: kcs_bmc: Fix a memory leak in the error handling path of 'kcs_bmc_serio_add_device()' char: ipmi: replace snprintf in show functions with sysfs_emit ipmi: ipmb: fix dependencies to eliminate build error ipmi:ipmb: Add OF support ipmi: bt: Add ast2600 compatible string ipmi: bt-bmc: Use registers directly ipmi: ipmb: Fix off-by-one size check on rcvlen ipmi:ssif: Use depends on, not select, for I2C ipmi: Add docs for the IPMI IPMB driver ipmi: Add docs for IPMB direct addressing ipmi:ipmb: Add initial support for IPMI over IPMB ipmi: Add support for IPMB direct messages ipmi: Export ipmb_checksum() ipmi: Fix a typo ipmi: Check error code before processing BMC response ipmi:devintf: Return a proper error when recv buffer too small ipmi: Disable some operations during a panic ipmi:watchdog: Set panic count to proper value on a panic
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git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-ledsLinus Torvalds authored
Pull LED updates from Pavel Machek: "Johannes pointed out that locking is still problematic with triggers list, attempt to solve that by using RCU" * tag 'leds-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: leds: trigger: Disable CPU trigger on PREEMPT_RT leds: trigger: use RCU to protect the led_cdevs list led-class-flash: fix -Wrestrict warning
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media updates from Mauro Carvalho Chehab: - New driver for SK Hynix Hi-846 8M pixel camera - New driver for the ov13b10 camera - New driver for Renesas R-Car ISP - mtk-vcodec gained support for version 2 of decoder firmware ABI - The legacy sir_ir driver got removed - videobuf2: the vb2_mem_ops kAPI had some improvements - lots of cleanups, fixes and new features at device drivers * tag 'media/v5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (328 commits) media: venus: core: Add sdm660 DT compatible and resource struct media: dt-bindings: media: venus: Add sdm660 dt schema media: venus: vdec: decoded picture buffer handling during reconfig sequence media: venus: Handle fatal errors during encoding and decoding media: venus: helpers: Add helper to mark fatal vb2 error media: venus: hfi: Check for sys error on session hfi functions media: venus: Make sys_error flag an atomic bitops media: venus: venc: Use pmruntime autosuspend media: allegro: write vui parameters for HEVC media: allegro: nal-hevc: implement generator for vui media: allegro: write correct colorspace into SPS media: allegro: extract nal value lookup functions to header media: allegro: correctly scale the bit rate in SPS media: allegro: remove external QP table media: allegro: fix row and column in response message media: allegro: add control to disable encoder buffer media: allegro: add encoder buffer support media: allegro: add pm_runtime support media: allegro: lookup VCU settings media: allegro: fix module removal if initialization failed ...
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https://github.com/cschaufler/smack-nextLinus Torvalds authored
Pull smack updates from Casey Schaufler: "Multiple corrections to smackfs: - a change for overlayfs support that corrects the initial attributes on created files - code clean-up for netlabel processing - several fixes in smackfs for a variety of reasons - Errors reported by W=1 have been addressed All told, nothing challenging" * tag 'Smack-for-5.16' of https://github.com/cschaufler/smack-next: smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi smackfs: use __GFP_NOFAIL for smk_cipso_doi() Smack: fix W=1 build warnings smack: remove duplicated hook function Smack:- Use overlay inode label in smack_inode_copy_up() smack: Guard smack_ipv6_lock definition within a SMACK_IPV6_PORT_LABELING block smackfs: Fix use-after-free in netlbl_catmap_walk()
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Linus Torvalds authored
Merge tag 'fallthrough-fixes-clang-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull fallthrough fixes from Gustavo A. R. Silva: "Fix some fall-through warnings when building with Clang and -Wimplicit-fallthrough" * tag 'fallthrough-fixes-clang-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: pcmcia: db1xxx_ss: Fix fall-through warning for Clang MIPS: Fix fall-through warnings for Clang scsi: st: Fix fall-through warning for Clang
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Linus Torvalds authored
Merge tag 'kspp-misc-fixes-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull hardening fixes and cleanups from Gustavo A. R. Silva: "Various hardening fixes and cleanups that I've been collecting during the last development cycle: Fix -Wcast-function-type error: - firewire: Remove function callback casts (Oscar Carter) Fix application of sizeof operator: - firmware/psci: fix application of sizeof to pointer (jing yangyang) Replace open coded instances with size_t saturating arithmetic helpers: - assoc_array: Avoid open coded arithmetic in allocator arguments (Len Baker) - writeback: prefer struct_size over open coded arithmetic (Len Baker) - aio: Prefer struct_size over open coded arithmetic (Len Baker) - dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic (Len Baker) Flexible array transformation: - KVM: PPC: Replace zero-length array with flexible array member (Len Baker) Use 2-factor argument multiplication form: - nouveau/svm: Use kvcalloc() instead of kvzalloc() (Gustavo A. R. Silva) - xfs: Use kvcalloc() instead of kvzalloc() (Gustavo A. R. Silva)" * tag 'kspp-misc-fixes-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: firewire: Remove function callback casts nouveau/svm: Use kvcalloc() instead of kvzalloc() firmware/psci: fix application of sizeof to pointer dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic KVM: PPC: Replace zero-length array with flexible array member aio: Prefer struct_size over open coded arithmetic writeback: prefer struct_size over open coded arithmetic xfs: Use kvcalloc() instead of kvzalloc() assoc_array: Avoid open coded arithmetic in allocator arguments
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull seccomp updates from Kees Cook: "These are x86-specific, but I carried these since they're also seccomp-specific. This flips the defaults for spec_store_bypass_disable and spectre_v2_user from "seccomp" to "prctl", as enough time has passed to allow system owners to have updated the defensive stances of their various workloads, and it's long overdue to unpessimize seccomp threads. Extensive rationale and details are in Andrea's main patch. Summary: - set spec_store_bypass_disable & spectre_v2_user to prctl (Andrea Arcangeli)" * tag 'seccomp-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: x86: deduplicate the spectre_v2_user documentation x86: change default to spec_store_bypass_disable=prctl spectre_v2_user=prctl
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull overflow updates from Kees Cook: "The end goal of the current buffer overflow detection work[0] is to gain full compile-time and run-time coverage of all detectable buffer overflows seen via array indexing or memcpy(), memmove(), and memset(). The str*() family of functions already have full coverage. While much of the work for these changes have been on-going for many releases (i.e. 0-element and 1-element array replacements, as well as avoiding false positives and fixing discovered overflows[1]), this series contains the foundational elements of several related buffer overflow detection improvements by providing new common helpers and FORTIFY_SOURCE changes needed to gain the introspection required for compiler visibility into array sizes. Also included are a handful of already Acked instances using the helpers (or related clean-ups), with many more waiting at the ready to be taken via subsystem-specific trees[2]. The new helpers are: - struct_group() for gaining struct member range introspection - memset_after() and memset_startat() for clearing to the end of structures - DECLARE_FLEX_ARRAY() for using flex arrays in unions or alone in structs Also included is the beginning of the refactoring of FORTIFY_SOURCE to support memcpy() introspection, fix missing and regressed coverage under GCC, and to prepare to fix the currently broken Clang support. Finishing this work is part of the larger series[0], but depends on all the false positives and buffer overflow bug fixes to have landed already and those that depend on this series to land. As part of the FORTIFY_SOURCE refactoring, a set of both a compile-time and run-time tests are added for FORTIFY_SOURCE and the mem*()-family functions respectively. The compile time tests have found a legitimate (though corner-case) bug[6] already. Please note that the appearance of "panic" and "BUG" in the FORTIFY_SOURCE refactoring are the result of relocating existing code, and no new use of those code-paths are expected nor desired. Finally, there are two tree-wide conversions for 0-element arrays and flexible array unions to gain sane compiler introspection coverage that result in no known object code differences. After this series (and the changes that have now landed via netdev and usb), we are very close to finally being able to build with -Warray-bounds and -Wzero-length-bounds. However, due corner cases in GCC[3] and Clang[4], I have not included the last two patches that turn on these options, as I don't want to introduce any known warnings to the build. Hopefully these can be solved soon" Link: https://lore.kernel.org/lkml/20210818060533.3569517-1-keescook@chromium.org/ [0] Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/?qt=grep&q=FORTIFY_SOURCE [1] Link: https://lore.kernel.org/lkml/202108220107.3E26FE6C9C@keescook/ [2] Link: https://lore.kernel.org/lkml/3ab153ec-2798-da4c-f7b1-81b0ac8b0c5b@roeck-us.net/ [3] Link: https://bugs.llvm.org/show_bug.cgi?id=51682 [4] Link: https://lore.kernel.org/lkml/202109051257.29B29745C0@keescook/ [5] Link: https://lore.kernel.org/lkml/20211020200039.170424-1-keescook@chromium.org/ [6] * tag 'overflow-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (30 commits) fortify: strlen: Avoid shadowing previous locals compiler-gcc.h: Define __SANITIZE_ADDRESS__ under hwaddress sanitizer treewide: Replace 0-element memcpy() destinations with flexible arrays treewide: Replace open-coded flex arrays in unions stddef: Introduce DECLARE_FLEX_ARRAY() helper btrfs: Use memset_startat() to clear end of struct string.h: Introduce memset_startat() for wiping trailing members and padding xfrm: Use memset_after() to clear padding string.h: Introduce memset_after() for wiping trailing members/padding lib: Introduce CONFIG_MEMCPY_KUNIT_TEST fortify: Add compile-time FORTIFY_SOURCE tests fortify: Allow strlen() and strnlen() to pass compile-time known lengths fortify: Prepare to improve strnlen() and strlen() warnings fortify: Fix dropped strcpy() compile-time write overflow check fortify: Explicitly disable Clang support fortify: Move remaining fortify helpers into fortify-string.h lib/string: Move helper functions out of string.c compiler_types.h: Remove __compiletime_object_size() cm4000_cs: Use struct_group() to zero struct cm4000_dev region can: flexcan: Use struct_group() to zero struct flexcan_regs regions ...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull compiler hardening updates from Kees Cook: "These are various compiler-related hardening feature updates. Notable is the addition of an explicit limited rationale for, and deprecation schedule of, gcc-plugins. gcc-plugins: - remove support for GCC 4.9 and older (Ard Biesheuvel) - remove duplicate include in gcc-common.h (Ye Guojin) - Explicitly document purpose and deprecation schedule (Kees Cook) - Remove cyc_complexity (Kees Cook) instrumentation: - Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO (Kees Cook) Clang LTO: - kallsyms: strip LTO suffixes from static functions (Nick Desaulniers)" * tag 'hardening-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: gcc-plugins: remove duplicate include in gcc-common.h gcc-plugins: Remove cyc_complexity gcc-plugins: Explicitly document purpose and deprecation schedule kallsyms: strip LTO suffixes from static functions gcc-plugins: remove support for GCC 4.9 and older hardening: Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO
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Linus Torvalds authored
Merge tag 'cpu-to-thread_info-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull thread_info update to move 'cpu' back from task_struct from Kees Cook: "Cross-architecture update to move task_struct::cpu back into thread_info on arm64, x86, s390, powerpc, and riscv. All Acked by arch maintainers. Quoting Ard Biesheuvel: 'Move task_struct::cpu back into thread_info Keeping CPU in task_struct is problematic for architectures that define raw_smp_processor_id() in terms of this field, as it requires linux/sched.h to be included, which causes a lot of pain in terms of circular dependencies (aka 'header soup') This series moves it back into thread_info (where it came from) for all architectures that enable THREAD_INFO_IN_TASK, addressing the header soup issue as well as some pointless differences in the implementations of task_cpu() and set_task_cpu()'" * tag 'cpu-to-thread_info-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: riscv: rely on core code to keep thread_info::cpu updated powerpc: smp: remove hack to obtain offset of task_struct::cpu sched: move CPU field back into thread_info if THREAD_INFO_IN_TASK=y powerpc: add CPU field to struct thread_info s390: add CPU field to struct thread_info x86: add CPU field to struct thread_info arm64: add CPU field to struct thread_info
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- 01 Nov, 2021 25 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
Pull m68k updates from Geert Uytterhoeven: - A small comma vs semicolon cleanup - defconfig updates * tag 'm68k-for-v5.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: defconfig: Update defconfigs for v5.15-rc1 m68k: muldi3: Use semicolon instead of comma
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc updates from Helge Deller: "Lots of new features and fixes: - Added TOC (table of content) support, which is a debugging feature which is either initiated by pressing the TOC button or via command in the BMC. If pressed the Linux built-in KDB/KGDB will be called (Sven Schnelle) - Fix CONFIG_PREEMPT (Sven) - Fix unwinder on 64-bit kernels (Sven) - Various kgdb fixes (Sven) - Added KFENCE support (me) - Switch to ARCH_STACKWALK implementation (me) - Fix ptrace check on syscall return (me) - Fix kernel crash with fixmaps on PA1.x machines (me) - Move thread_info into task struct, aka CONFIG_THREAD_INFO_IN_TASK (me) - Updated defconfigs - Smaller cleanups, including Makefile cleanups (Masahiro Yamada), use kthread_run() macro (Cai Huoqing), use swap() macro (Yihao Han)" * tag 'for-5.16/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (36 commits) parisc: Fix set_fixmap() on PA1.x CPUs parisc: Use swap() to swap values in setup_bootmem() parisc: Update defconfigs parisc: decompressor: clean up Makefile parisc: decompressor: remove repeated depenency of misc.o parisc: Remove unused constants from asm-offsets.c parisc/ftrace: use static key to enable/disable function graph tracer parisc/ftrace: set function trace function parisc: Make use of the helper macro kthread_run() parisc: mark xchg functions notrace parisc: enhance warning regarding usage of O_NONBLOCK parisc: Drop ifdef __KERNEL__ from non-uapi kernel headers parisc: Use PRIV_USER and PRIV_KERNEL in ptrace.h parisc: Use PRIV_USER in syscall.S parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling parisc: Move thread_info into task struct parisc: add support for TOC (transfer of control) parisc/firmware: add functions to retrieve TOC data parisc: add PIM TOC data structures parisc: move virt_map macro to assembly.h ...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 updates from Will Deacon: "There's the usual summary below, but the highlights are support for the Armv8.6 timer extensions, KASAN support for asymmetric MTE, the ability to kexec() with the MMU enabled and a second attempt at switching to the generic pfn_valid() implementation. Summary: - Support for the Arm8.6 timer extensions, including a self-synchronising view of the system registers to elide some expensive ISB instructions. - Exception table cleanup and rework so that the fixup handlers appear correctly in backtraces. - A handful of miscellaneous changes, the main one being selection of CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK. - More mm and pgtable cleanups. - KASAN support for "asymmetric" MTE, where tag faults are reported synchronously for loads (via an exception) and asynchronously for stores (via a register). - Support for leaving the MMU enabled during kexec relocation, which significantly speeds up the operation. - Minor improvements to our perf PMU drivers. - Improvements to the compat vDSO build system, particularly when building with LLVM=1. - Preparatory work for handling some Coresight TRBE tracing errata. - Cleanup and refactoring of the SVE code to pave the way for SME support in future. - Ensure SCS pages are unpoisoned immediately prior to freeing them when KASAN is enabled for the vmalloc area. - Try moving to the generic pfn_valid() implementation again now that the DMA mapping issue from last time has been resolved. - Numerous improvements and additions to our FPSIMD and SVE selftests" [ armv8.6 timer updates were in a shared branch and already came in through -tip in the timer pull - Linus ] * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (85 commits) arm64: Select POSIX_CPU_TIMERS_TASK_WORK arm64: Document boot requirements for FEAT_SME_FA64 arm64/sve: Fix warnings when SVE is disabled arm64/sve: Add stub for sve_max_virtualisable_vl() arm64: errata: Add detection for TRBE write to out-of-range arm64: errata: Add workaround for TSB flush failures arm64: errata: Add detection for TRBE overwrite in FILL mode arm64: Add Neoverse-N2, Cortex-A710 CPU part definition selftests: arm64: Factor out utility functions for assembly FP tests arm64: vmlinux.lds.S: remove `.fixup` section arm64: extable: add load_unaligned_zeropad() handler arm64: extable: add a dedicated uaccess handler arm64: extable: add `type` and `data` fields arm64: extable: use `ex` for `exception_table_entry` arm64: extable: make fixup_exception() return bool arm64: extable: consolidate definitions arm64: gpr-num: support W registers arm64: factor out GPR numbering helpers arm64: kvm: use kvm_exception_table_entry arm64: lib: __arch_copy_to_user(): fold fixups into body ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 SGX updates from Borislav Petkov: "Add a SGX_IOC_VEPC_REMOVE ioctl to the /dev/sgx_vepc virt interface with which EPC pages can be put back into their uninitialized state without having to reopen /dev/sgx_vepc, which could not be possible anymore after startup due to security policies" * tag 'x86_sgx_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx/virt: implement SGX_IOC_VEPC_REMOVE ioctl x86/sgx/virt: extract sgx_vepc_remove_page
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 SEV updates from Borislav Petkov: - Export sev_es_ghcb_hv_call() so that HyperV Isolation VMs can use it too - Non-urgent fixes and cleanups * tag 'x86_sev_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV x86/sev: Allow #VC exceptions on the VC2 stack x86/sev: Fix stack type check in vc_switch_off_ist() x86/sme: Use #define USE_EARLY_PGTABLE_L5 in mem_encrypt_identity.c x86/sev: Carve out HV call's return value verification
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull misc x86 changes from Borislav Petkov: - Use the proper interface for the job: get_unaligned() instead of memcpy() in the insn decoder - A randconfig build fix * tag 'x86_misc_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/insn: Use get_unaligned() instead of memcpy() x86/Kconfig: Fix an unused variable error in dell-smm-hwmon
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cpu updates from Borislav Petkov: - Start checking a CPUID bit on AMD Zen3 which states that the CPU clears the segment base when a null selector is written. Do the explicit detection on older CPUs, zen2 and hygon specifically, which have the functionality but do not advertize the CPUID bit. Factor in the presence of a hypervisor underneath the kernel and avoid doing the explicit check there which the HV might've decided to not advertize for migration safety reasons, or similar. - Add support for a new X86 CPU vendor: VORTEX. Needed for whitelisting those CPUs in the hardware vulnerabilities detection - Force the compiler to use rIP-relative addressing in the fallback path of static_cpu_has(), in order to avoid unnecessary register pressure * tag 'x86_cpu_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Fix migration safety with X86_BUG_NULL_SEL x86/CPU: Add support for Vortex CPUs x86/umip: Downgrade warning messages to debug loglevel x86/asm: Avoid adding register pressure for the init case in static_cpu_has() x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cleanups from Borislav Petkov: "The usual round of random minor fixes and cleanups all over the place" * tag 'x86_cleanups_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Makefile: Remove unneeded whitespaces before tabs x86/of: Kill unused early_init_dt_scan_chosen_arch() x86: Fix misspelled Kconfig symbols x86/Kconfig: Remove references to obsolete Kconfig symbols x86/smp: Remove unnecessary assignment to local var freq_scale
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull generic confidential computing updates from Borislav Petkov: "Add an interface called cc_platform_has() which is supposed to be used by confidential computing solutions to query different aspects of the system. The intent behind it is to unify testing of such aspects instead of having each confidential computing solution add its own set of tests to code paths in the kernel, leading to an unwieldy mess" * tag 'x86_cc_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: treewide: Replace the use of mem_encrypt_active() with cc_platform_has() x86/sev: Replace occurrences of sev_es_active() with cc_platform_has() x86/sev: Replace occurrences of sev_active() with cc_platform_has() x86/sme: Replace occurrences of sme_active() with cc_platform_has() powerpc/pseries/svm: Add a powerpc version of cc_platform_has() x86/sev: Add an x86 version of cc_platform_has() arch/cc: Introduce a function to check for confidential computing features x86/ioremap: Selectively build arch override encryption functions
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 build fix from Borislav Petkov: - A single fix to hdimage when using older versions of mtools * tag 'x86_build_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot: Fix make hdimage with older versions of mtools
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RAS updates from Borislav Petkov: - Get rid of a bunch of function pointers used in MCA land in favor of normal functions. This is in preparation of making the MCA code noinstr-aware - When the kernel copies data from user addresses and it encounters a machine check, a SIGBUS is sent to that process. Change this action to either an -EFAULT which is returned to the user or a short write, making the recovery action a lot more user-friendly * tag 'ras_core_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Sort mca_config members to get rid of unnecessary padding x86/mce: Get rid of the ->quirk_no_way_out() indirect call x86/mce: Get rid of msr_ops x86/mce: Get rid of machine_check_vector x86/mce: Get rid of the mce_severity function pointer x86/mce: Drop copyin special case for #MC x86/mce: Change to not send SIGBUS error during copy from user
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI updates from Borislav Petkov: "The last EFI pull request which is forwarded through the tip tree, for v5.16. From now on, Ard will be sending stuff directly. Disable EFI runtime services by default on PREEMPT_RT, while adding the ability to re-enable them on demand by passing efi=runtime on the command line" * tag 'efi-next-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: Allow efi=runtime efi: Disable runtime services on RT
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC updates from Borislav Petkov: "A small pile of EDAC updates which the autumn wind blew my way. :) - amd64_edac: Add support for three-rank interleaving mode which is present on AMD zen2 servers - The usual fixes and cleanups all over EDAC land" * tag 'edac_updates_for_v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell EDAC/ti: Remove redundant error messages EDAC/amd64: Handle three rank interleaving mode EDAC/mc_sysfs: Print MC-scope sysfs counters unsigned EDAC/al_mc: Make use of the helper function devm_add_action_or_reset() EDAC/mc: Replace strcpy(), sprintf() and snprintf() with strscpy() or scnprintf()
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Linus Torvalds authored
I had missed a semantic conflict between commit d389a4a8 ("mm: Add folio flag manipulation functions") from the folio tree, and commit eac96c3e ("mm: filemap: check if THP has hwpoisoned subpage for PMD page fault") that added a new set of page flags. My build tests had too many options enabled, which hid this issue. But if you didn't have MEMORY_FAILURE or TRANSPARENT_HUGEPAGE enabled, you'd end up with build errors like this: include/linux/page-flags.h:806:29: error: macro "PAGEFLAG_FALSE" requires 2 arguments, but only 1 given 806 | PAGEFLAG_FALSE(HasHWPoisoned) | ^ due to the missing lowercase name used for folio function naming. Fixes: 49f8275c ("Merge tag 'folio-5.16' of git://git.infradead.org/users/willy/pagecache") Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Reported-by: Yang Shi <shy828301@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fpu updates from Thomas Gleixner: - Cleanup of extable fixup handling to be more robust, which in turn allows to make the FPU exception fixups more robust as well. - Change the return code for signal frame related failures from explicit error codes to a boolean fail/success as that's all what the calling code evaluates. - A large refactoring of the FPU code to prepare for adding AMX support: - Distangle the public header maze and remove especially the misnomed kitchen sink internal.h which is despite it's name included all over the place. - Add a proper abstraction for the register buffer storage (struct fpstate) which allows to dynamically size the buffer at runtime by flipping the pointer to the buffer container from the default container which is embedded in task_struct::tread::fpu to a dynamically allocated container with a larger register buffer. - Convert the code over to the new fpstate mechanism. - Consolidate the KVM FPU handling by moving the FPU related code into the FPU core which removes the number of exports and avoids adding even more export when AMX has to be supported in KVM. This also removes duplicated code which was of course unnecessary different and incomplete in the KVM copy. - Simplify the KVM FPU buffer handling by utilizing the new fpstate container and just switching the buffer pointer from the user space buffer to the KVM guest buffer when entering vcpu_run() and flipping it back when leaving the function. This cuts the memory requirements of a vCPU for FPU buffers in half and avoids pointless memory copy operations. This also solves the so far unresolved problem of adding AMX support because the current FPU buffer handling of KVM inflicted a circular dependency between adding AMX support to the core and to KVM. With the new scheme of switching fpstate AMX support can be added to the core code without affecting KVM. - Replace various variables with proper data structures so the extra information required for adding dynamically enabled FPU features (AMX) can be added in one place - Add AMX (Advanced Matrix eXtensions) support (finally): AMX is a large XSTATE component which is going to be available with Saphire Rapids XEON CPUs. The feature comes with an extra MSR (MSR_XFD) which allows to trap the (first) use of an AMX related instruction, which has two benefits: 1) It allows the kernel to control access to the feature 2) It allows the kernel to dynamically allocate the large register state buffer instead of burdening every task with the the extra 8K or larger state storage. It would have been great to gain this kind of control already with AVX512. The support comes with the following infrastructure components: 1) arch_prctl() to - read the supported features (equivalent to XGETBV(0)) - read the permitted features for a task - request permission for a dynamically enabled feature Permission is granted per process, inherited on fork() and cleared on exec(). The permission policy of the kernel is restricted to sigaltstack size validation, but the syscall obviously allows further restrictions via seccomp etc. 2) A stronger sigaltstack size validation for sys_sigaltstack(2) which takes granted permissions and the potentially resulting larger signal frame into account. This mechanism can also be used to enforce factual sigaltstack validation independent of dynamic features to help with finding potential victims of the 2K sigaltstack size constant which is broken since AVX512 support was added. 3) Exception handling for #NM traps to catch first use of a extended feature via a new cause MSR. If the exception was caused by the use of such a feature, the handler checks permission for that feature. If permission has not been granted, the handler sends a SIGILL like the #UD handler would do if the feature would have been disabled in XCR0. If permission has been granted, then a new fpstate which fits the larger buffer requirement is allocated. In the unlikely case that this allocation fails, the handler sends SIGSEGV to the task. That's not elegant, but unavoidable as the other discussed options of preallocation or full per task permissions come with their own set of horrors for kernel and/or userspace. So this is the lesser of the evils and SIGSEGV caused by unexpected memory allocation failures is not a fundamentally new concept either. When allocation succeeds, the fpstate properties are filled in to reflect the extended feature set and the resulting sizes, the fpu::fpstate pointer is updated accordingly and the trap is disarmed for this task permanently. 4) Enumeration and size calculations 5) Trap switching via MSR_XFD The XFD (eXtended Feature Disable) MSR is context switched with the same life time rules as the FPU register state itself. The mechanism is keyed off with a static key which is default disabled so !AMX equipped CPUs have zero overhead. On AMX enabled CPUs the overhead is limited by comparing the tasks XFD value with a per CPU shadow variable to avoid redundant MSR writes. In case of switching from a AMX using task to a non AMX using task or vice versa, the extra MSR write is obviously inevitable. All other places which need to be aware of the variable feature sets and resulting variable sizes are not affected at all because they retrieve the information (feature set, sizes) unconditonally from the fpstate properties. 6) Enable the new AMX states Note, this is relatively new code despite the fact that AMX support is in the works for more than a year now. The big refactoring of the FPU code, which allowed to do a proper integration has been started exactly 3 weeks ago. Refactoring of the existing FPU code and of the original AMX patches took a week and has been subject to extensive review and testing. The only fallout which has not been caught in review and testing right away was restricted to AMX enabled systems, which is completely irrelevant for anyone outside Intel and their early access program. There might be dragons lurking as usual, but so far the fine grained refactoring has held up and eventual yet undetected fallout is bisectable and should be easily addressable before the 5.16 release. Famous last words... Many thanks to Chang Bae and Dave Hansen for working hard on this and also to the various test teams at Intel who reserved extra capacity to follow the rapid development of this closely which provides the confidence level required to offer this rather large update for inclusion into 5.16-rc1 * tag 'x86-fpu-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits) Documentation/x86: Add documentation for using dynamic XSTATE features x86/fpu: Include vmalloc.h for vzalloc() selftests/x86/amx: Add context switch test selftests/x86/amx: Add test cases for AMX state management x86/fpu/amx: Enable the AMX feature in 64-bit mode x86/fpu: Add XFD handling for dynamic states x86/fpu: Calculate the default sizes independently x86/fpu/amx: Define AMX state components and have it used for boot-time checks x86/fpu/xstate: Prepare XSAVE feature table for gaps in state component numbers x86/fpu/xstate: Add fpstate_realloc()/free() x86/fpu/xstate: Add XFD #NM handler x86/fpu: Update XFD state where required x86/fpu: Add sanity checks for XFD x86/fpu: Add XFD state to fpstate x86/msr-index: Add MSRs for XFD x86/cpufeatures: Add eXtended Feature Disabling (XFD) feature bit x86/fpu: Reset permission and fpstate on exec() x86/fpu: Prepare fpu_clone() for dynamically enabled features x86/fpu/signal: Prepare for variable sigframe length x86/signal: Use fpu::__state_user_size for sigalt stack validation ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/apic update from Thomas Gleixner: "A single commit which reduces cache misses in __x2apic_send_IPI_mask() significantly by converting x86_cpu_to_logical_apicid() to an array instead of using per CPU storage. This reduces the cost for a full broadcast on a dual socket system with 256 CPUs from 33 down to 11 microseconds" * tag 'x86-apic-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Reduce cache line misses in __x2apic_send_IPI_mask()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler updates from Thomas Gleixner: - Revert the printk format based wchan() symbol resolution as it can leak the raw value in case that the symbol is not resolvable. - Make wchan() more robust and work with all kind of unwinders by enforcing that the task stays blocked while unwinding is in progress. - Prevent sched_fork() from accessing an invalid sched_task_group - Improve asymmetric packing logic - Extend scheduler statistics to RT and DL scheduling classes and add statistics for bandwith burst to the SCHED_FAIR class. - Properly account SCHED_IDLE entities - Prevent a potential deadlock when initial priority is assigned to a newly created kthread. A recent change to plug a race between cpuset and __sched_setscheduler() introduced a new lock dependency which is now triggered. Break the lock dependency chain by moving the priority assignment to the thread function. - Fix the idle time reporting in /proc/uptime for NOHZ enabled systems. - Improve idle balancing in general and especially for NOHZ enabled systems. - Provide proper interfaces for live patching so it does not have to fiddle with scheduler internals. - Add cluster aware scheduling support. - A small set of tweaks for RT (irqwork, wait_task_inactive(), various scheduler options and delaying mmdrop) - The usual small tweaks and improvements all over the place * tag 'sched-core-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (69 commits) sched/fair: Cleanup newidle_balance sched/fair: Remove sysctl_sched_migration_cost condition sched/fair: Wait before decaying max_newidle_lb_cost sched/fair: Skip update_blocked_averages if we are defering load balance sched/fair: Account update_blocked_averages in newidle_balance cost x86: Fix __get_wchan() for !STACKTRACE sched,x86: Fix L2 cache mask sched/core: Remove rq_relock() sched: Improve wake_up_all_idle_cpus() take #2 irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT irq_work: Handle some irq_work in a per-CPU thread on PREEMPT_RT irq_work: Allow irq_work_sync() to sleep if irq_work() no IRQ support. sched/rt: Annotate the RT balancing logic irqwork as IRQ_WORK_HARD_IRQ sched: Add cluster scheduler level for x86 sched: Add cluster scheduler level in core and related Kconfig for ARM64 topology: Represent clusters of CPUs within a die sched: Disable -Wunused-but-set-variable sched: Add wrapper for get_wchan() to keep task blocked x86: Fix get_wchan() to support the ORC unwinder proc: Use task_is_running() for wchan in /proc/$pid/stat ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer updates from Thomas Gleixner: "Time, timers and timekeeping updates: - No core updates - No new clocksource/event driver - A large rework of the ARM architected timer driver to prepare for the support of the upcoming ARMv8.6 support - Fix Kconfig options for Exynos MCT, Samsung PWM and TI DM timers - Address a namespace collison in the ARC sp804 timer driver" * tag 'timers-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/timer-ti-dm: Select TIMER_OF clocksource/drivers/exynosy: Depend on sub-architecture for Exynos MCT and Samsung PWM clocksource/drivers/arch_arm_timer: Move workaround synchronisation around clocksource/drivers/arm_arch_timer: Fix masking for high freq counters clocksource/drivers/arm_arch_timer: Drop unnecessary ISB on CVAL programming clocksource/drivers/arm_arch_timer: Remove any trace of the TVAL programming interface clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations clocksource/drivers/arm_arch_timer: Advertise 56bit timer to the core code clocksource/drivers/arm_arch_timer: Move MMIO timer programming over to CVAL clocksource/drivers/arm_arch_timer: Fix MMIO base address vs callback ordering issue clocksource/drivers/arm_arch_timer: Move drop _tval from erratum function names clocksource/drivers/arm_arch_timer: Move system register timer programming over to CVAL clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64 clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses clocksource/drivers/arc_timer: Eliminate redefined macro error
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool updates from Thomas Gleixner: - Improve retpoline code patching by separating it from alternatives which reduces memory footprint and allows to do better optimizations in the actual runtime patching. - Add proper retpoline support for x86/BPF - Address noinstr warnings in x86/kvm, lockdep and paravirtualization code - Add support to handle pv_opsindirect calls in the noinstr analysis - Classify symbols upfront and cache the result to avoid redundant str*cmp() invocations. - Add a CFI hash to reduce memory consumption which also reduces runtime on a allyesconfig by ~50% - Adjust XEN code to make objtool handling more robust and as a side effect to prevent text fragmentation due to placement of the hypercall page. * tag 'objtool-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) bpf,x86: Respect X86_FEATURE_RETPOLINE* bpf,x86: Simplify computing label offsets x86,bugs: Unconditionally allow spectre_v2=retpoline,amd x86/alternative: Add debug prints to apply_retpolines() x86/alternative: Try inline spectre_v2=retpoline,amd x86/alternative: Handle Jcc __x86_indirect_thunk_\reg x86/alternative: Implement .retpoline_sites support x86/retpoline: Create a retpoline thunk array x86/retpoline: Move the retpoline thunk declarations to nospec-branch.h x86/asm: Fixup odd GEN-for-each-reg.h usage x86/asm: Fix register order x86/retpoline: Remove unused replacement symbols objtool,x86: Replace alternatives with .retpoline_sites objtool: Shrink struct instruction objtool: Explicitly avoid self modifying code in .altinstr_replacement objtool: Classify symbols objtool: Support pv_opsindirect calls for noinstr x86/xen: Rework the xen_{cpu,irq,mmu}_opsarrays x86/xen: Mark xen_force_evtchn_callback() noinstr x86/xen: Make irq_disable() noinstr ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking updates from Thomas Gleixner: - Move futex code into kernel/futex/ and split up the kitchen sink into seperate files to make integration of sys_futex_waitv() simpler. - Add a new sys_futex_waitv() syscall which allows to wait on multiple futexes. The main use case is emulating Windows' WaitForMultipleObjects which allows Wine to improve the performance of Windows Games. Also native Linux games can benefit from this interface as this is a common wait pattern for this kind of applications. - Add context to ww_mutex_trylock() to provide a path for i915 to rework their eviction code step by step without making lockdep upset until the final steps of rework are completed. It's also useful for regulator and TTM to avoid dropping locks in the non contended path. - Lockdep and might_sleep() cleanups and improvements - A few improvements for the RT substitutions. - The usual small improvements and cleanups. * tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) locking: Remove spin_lock_flags() etc locking/rwsem: Fix comments about reader optimistic lock stealing conditions locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able() locking/rwsem: Disable preemption for spinning region docs: futex: Fix kernel-doc references futex: Fix PREEMPT_RT build futex2: Documentation: Document sys_futex_waitv() uAPI selftests: futex: Test sys_futex_waitv() wouldblock selftests: futex: Test sys_futex_waitv() timeout selftests: futex: Add sys_futex_waitv() test futex,arm: Wire up sys_futex_waitv() futex,x86: Wire up sys_futex_waitv() futex: Implement sys_futex_waitv() futex: Simplify double_lock_hb() futex: Split out wait/wake futex: Split out requeue futex: Rename mark_wake_futex() futex: Rename: match_futex() futex: Rename: hb_waiter_{inc,dec,pending}() futex: Split out PI futex ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf updates from Thomas Gleixner: "Core: - Allow ftrace to instrument parts of the perf core code - Add a new mem_hops field to perf_mem_data_src which allows to represent intra-node/package or inter-node/off-package details to prepare for next generation systems which have more hieararchy within the node/pacakge level. Tools: - Update for the new mem_hops field in perf_mem_data_src Arch: - A set of constraints fixes for the Intel uncore PMU - The usual set of small fixes and improvements for x86 and PPC" * tag 'perf-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Fix ICL/SPR INST_RETIRED.PREC_DIST encodings powerpc/perf: Fix data source encodings for L2.1 and L3.1 accesses tools/perf: Add mem_hops field in perf_mem_data_src structure perf: Add mem_hops field in perf_mem_data_src structure perf: Add comment about current state of PERF_MEM_LVL_* namespace and remove an extra line perf/core: Allow ftrace for functions in kernel/event/core.c perf/x86: Add new event for AUX output counter index perf/x86: Add compiler barrier after updating BTS perf/x86/intel/uncore: Fix Intel SPR M3UPI event constraints perf/x86/intel/uncore: Fix Intel SPR M2PCIE event constraints perf/x86/intel/uncore: Fix Intel SPR IIO event constraints perf/x86/intel/uncore: Fix Intel SPR CHA event constraints perf/x86/intel/uncore: Fix Intel ICX IIO event constraints perf/x86/intel/uncore: Fix invalid unit check perf/x86/intel/uncore: Support extra IMC channel on Ice Lake server
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq updates from Thomas Gleixner: "Updates for the interrupt subsystem: Core changes: - Prevent a potential deadlock when initial priority is assigned to a newly created interrupt thread. A recent change to plug a race between cpuset and __sched_setscheduler() introduced a new lock dependency which is now triggered. Break the lock dependency chain by moving the priority assignment to the thread function. - A couple of small updates to make the irq core RT safe. - Confine the irq_cpu_online/offline() API to the only left unfixable user Cavium Octeon so that it does not grow new usage. - A small documentation update Driver changes: - A large cross architecture rework to move irq_enter/exit() into the architecture code to make addressing the NOHZ_FULL/RCU issues simpler. - The obligatory new irq chip driver for Microchip EIC - Modularize a few irq chip drivers - Expand usage of devm_*() helpers throughout the driver code - The usual small fixes and improvements all over the place" * tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits) h8300: Fix linux/irqchip.h include mess dt-bindings: irqchip: renesas-irqc: Document r8a774e1 bindings MIPS: irq: Avoid an unused-variable error genirq: Hide irq_cpu_{on,off}line() behind a deprecated option irqchip/mips-gic: Get rid of the reliance on irq_cpu_online() MIPS: loongson64: Drop call to irq_cpu_offline() irq: remove handle_domain_{irq,nmi}() irq: remove CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY irq: riscv: perform irqentry in entry code irq: openrisc: perform irqentry in entry code irq: csky: perform irqentry in entry code irq: arm64: perform irqentry in entry code irq: arm: perform irqentry in entry code irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY irq: nds32: avoid CONFIG_HANDLE_DOMAIN_IRQ irq: arc: avoid CONFIG_HANDLE_DOMAIN_IRQ irq: add generic_handle_arch_irq() irq: unexport handle_irq_desc() irq: simplify handle_domain_{irq,nmi}() irq: mips: simplify do_domain_IRQ() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs updates from David Sterba: "The updates this time are more under the hood and enhancing existing features (subpage with compression and zoned namespaces). Performance related: - misc small inode logging improvements (+3% throughput, -11% latency on sample dbench workload) - more efficient directory logging: bulk item insertion, less tree searches and locking - speed up bulk insertion of items into a b-tree, which is used when logging directories, when running delayed items for directories (fsync and transaction commits) and when running the slow path (full sync) of an fsync (bulk creation run time -4%, deletion -12%) Core: - continued subpage support - make defragmentation work - make compression write work - zoned mode - support ZNS (zoned namespaces), zone capacity is number of usable blocks in each zone - add dedicated block group (zoned) for relocation, to prevent out of order writes in some cases - greedy block group reclaim, pick the ones with least usable space first - preparatory work for send protocol updates - error handling improvements - cleanups and refactoring Fixes: - lockdep warnings - in show_devname callback, on seeding device - device delete on loop device due to conversions to workqueues - fix deadlock between chunk allocation and chunk btree modifications - fix tracking of missing device count and status" * tag 'for-5.16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (140 commits) btrfs: remove root argument from check_item_in_log() btrfs: remove root argument from add_link() btrfs: remove root argument from btrfs_unlink_inode() btrfs: remove root argument from drop_one_dir_item() btrfs: clear MISSING device status bit in btrfs_close_one_device btrfs: call btrfs_check_rw_degradable only if there is a missing device btrfs: send: prepare for v2 protocol btrfs: fix comment about sector sizes supported in 64K systems btrfs: update device path inode time instead of bd_inode fs: export an inode_update_time helper btrfs: fix deadlock when defragging transparent huge pages btrfs: sysfs: convert scnprintf and snprintf to sysfs_emit btrfs: make btrfs_super_block size match BTRFS_SUPER_INFO_SIZE btrfs: update comments for chunk allocation -ENOSPC cases btrfs: fix deadlock between chunk allocation and chunk btree modifications btrfs: zoned: use greedy gc for auto reclaim btrfs: check-integrity: stop storing the block device name in btrfsic_dev_state btrfs: use btrfs_get_dev_args_from_path in dev removal ioctls btrfs: add a btrfs_get_dev_args_from_path helper btrfs: handle device lookup with btrfs_dev_lookup_args ...
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Linus Torvalds authored
Commit ccaa66c8 reinstated the kmap/kunmap that had been dropped in commit 8c945d32 ("btrfs: compression: drop kmap/kunmap from lzo"). However, it seems to have done so incorrectly due to the change not reverting cleanly, and lzo_decompress_bio() ended up not having a matching "kunmap()" to the "kmap()" that was put back. Also, any assert that the page pointer is not NULL should be before the kmap() of said pointer, since otherwise you'd just oops in the kmap() before the assert would even trigger. I noticed this when trying to verify my btrfs merge, and things not adding up. I'm doing this fixup before re-doing my merge, because this commit needs to also be backported to 5.15 (after verification from the btrfs people). Fixes: ccaa66c8 ("Revert 'btrfs: compression: drop kmap/kunmap from lzo'") Cc: David Sterba <dsterba@suse.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfatLinus Torvalds authored
Pull exfat fix from Namjae Jeon: "Fix ->i_blocks truncation issue caused by wrong 32bit mask" * tag 'exfat-for-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat: exfat: fix incorrect loading of i_blocks for large files
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