1. 11 Jun, 2020 8 commits
  2. 07 Jun, 2020 2 commits
  3. 05 Jun, 2020 6 commits
  4. 02 Jun, 2020 24 commits
    • yu kuai's avatar
      block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed · a75ca930
      yu kuai authored
      commit e7bf90e5 ("block/bio-integrity: fix a memory leak bug") added
      a kfree() for 'buf' if bio_integrity_add_page() returns '0'. However,
      the object will be freed in bio_integrity_free() since 'bio->bi_opf' and
      'bio->bi_integrity' were set previousy in bio_integrity_alloc().
      
      Fixes: commit e7bf90e5 ("block/bio-integrity: fix a memory leak bug")
      Signed-off-by: default avataryu kuai <yukuai3@huawei.com>
      Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
      Reviewed-by: default avatarBob Liu <bob.liu@oracle.com>
      Acked-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      a75ca930
    • Linus Torvalds's avatar
      Merge tag 'for-5.8/io_uring-2020-06-01' of git://git.kernel.dk/linux-block · 1ee08de1
      Linus Torvalds authored
      Pull io_uring updates from Jens Axboe:
       "A relatively quiet round, mostly just fixes and code improvements. In
      particular:
      
         - Make statx just use the generic statx handler, instead of open
           coding it. We don't need that anymore, as we always call it async
           safe (Bijan)
      
         - Enable closing of the ring itself. Also fixes O_PATH closure (me)
      
         - Properly name completion members (me)
      
         - Batch reap of dead file registrations (me)
      
         - Allow IORING_OP_POLL with double waitqueues (me)
      
         - Add tee(2) support (Pavel)
      
         - Remove double off read (Pavel)
      
         - Fix overflow cancellations (Pavel)
      
         - Improve CQ timeouts (Pavel)
      
         - Async defer drain fixes (Pavel)
      
         - Add support for enabling/disabling notifications on a registered
           eventfd (Stefano)
      
         - Remove dead state parameter (Xiaoguang)
      
         - Disable SQPOLL submit on dying ctx (Xiaoguang)
      
         - Various code cleanups"
      
      * tag 'for-5.8/io_uring-2020-06-01' of git://git.kernel.dk/linux-block: (29 commits)
        io_uring: fix overflowed reqs cancellation
        io_uring: off timeouts based only on completions
        io_uring: move timeouts flushing to a helper
        statx: hide interfaces no longer used by io_uring
        io_uring: call statx directly
        statx: allow system call to be invoked from io_uring
        io_uring: add io_statx structure
        io_uring: get rid of manual punting in io_close
        io_uring: separate DRAIN flushing into a cold path
        io_uring: don't re-read sqe->off in timeout_prep()
        io_uring: simplify io_timeout locking
        io_uring: fix flush req->refs underflow
        io_uring: don't submit sqes when ctx->refs is dying
        io_uring: async task poll trigger cleanup
        io_uring: add tee(2) support
        splice: export do_tee()
        io_uring: don't repeat valid flag list
        io_uring: rename io_file_put()
        io_uring: remove req->needs_fixed_files
        io_uring: cleanup io_poll_remove_one() logic
        ...
      1ee08de1
    • Linus Torvalds's avatar
      Merge tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block · bce159d7
      Linus Torvalds authored
      Pull block driver updates from Jens Axboe:
       "On top of the core changes, here are the block driver changes for this
        merge window:
      
         - NVMe changes:
              - NVMe over Fibre Channel protocol updates, which also reach
                over to drivers/scsi/lpfc (James Smart)
              - namespace revalidation support on the target (Anthony
                Iliopoulos)
              - gcc zero length array fix (Arnd Bergmann)
              - nvmet cleanups (Chaitanya Kulkarni)
              - misc cleanups and fixes (me, Keith Busch, Sagi Grimberg)
              - use a SRQ per completion vector (Max Gurtovoy)
              - fix handling of runtime changes to the queue count (Weiping
                Zhang)
              - t10 protection information support for nvme-rdma and
                nvmet-rdma (Israel Rukshin and Max Gurtovoy)
              - target side AEN improvements (Chaitanya Kulkarni)
              - various fixes and minor improvements all over, icluding the
                nvme part of the lpfc driver"
      
         - Floppy code cleanup series (Willy, Denis)
      
         - Floppy contention fix (Jiri)
      
         - Loop CONFIGURE support (Martijn)
      
         - bcache fixes/improvements (Coly, Joe, Colin)
      
         - q->queuedata cleanups (Christoph)
      
         - Get rid of ioctl_by_bdev (Christoph, Stefan)
      
         - md/raid5 allocation fixes (Coly)
      
         - zero length array fixes (Gustavo)
      
         - swim3 task state fix (Xu)"
      
      * tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block: (166 commits)
        bcache: configure the asynchronous registertion to be experimental
        bcache: asynchronous devices registration
        bcache: fix refcount underflow in bcache_device_free()
        bcache: Convert pr_<level> uses to a more typical style
        bcache: remove redundant variables i and n
        lpfc: Fix return value in __lpfc_nvme_ls_abort
        lpfc: fix axchg pointer reference after free and double frees
        lpfc: Fix pointer checks and comments in LS receive refactoring
        nvme: set dma alignment to qword
        nvmet: cleanups the loop in nvmet_async_events_process
        nvmet: fix memory leak when removing namespaces and controllers concurrently
        nvmet-rdma: add metadata/T10-PI support
        nvmet: add metadata support for block devices
        nvmet: add metadata/T10-PI support
        nvme: add Metadata Capabilities enumerations
        nvmet: rename nvmet_check_data_len to nvmet_check_transfer_len
        nvmet: rename nvmet_rw_len to nvmet_rw_data_len
        nvmet: add metadata characteristics for a namespace
        nvme-rdma: add metadata/T10-PI support
        nvme-rdma: introduce nvme_rdma_sgl structure
        ...
      bce159d7
    • Linus Torvalds's avatar
      Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block · 750a02ab
      Linus Torvalds authored
      Pull block updates from Jens Axboe:
       "Core block changes that have been queued up for this release:
      
         - Remove dead blk-throttle and blk-wbt code (Guoqing)
      
         - Include pid in blktrace note traces (Jan)
      
         - Don't spew I/O errors on wouldblock termination (me)
      
         - Zone append addition (Johannes, Keith, Damien)
      
         - IO accounting improvements (Konstantin, Christoph)
      
         - blk-mq hardware map update improvements (Ming)
      
         - Scheduler dispatch improvement (Salman)
      
         - Inline block encryption support (Satya)
      
         - Request map fixes and improvements (Weiping)
      
         - blk-iocost tweaks (Tejun)
      
         - Fix for timeout failing with error injection (Keith)
      
         - Queue re-run fixes (Douglas)
      
         - CPU hotplug improvements (Christoph)
      
         - Queue entry/exit improvements (Christoph)
      
         - Move DMA drain handling to the few drivers that use it (Christoph)
      
         - Partition handling cleanups (Christoph)"
      
      * tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block: (127 commits)
        block: mark bio_wouldblock_error() bio with BIO_QUIET
        blk-wbt: rename __wbt_update_limits to wbt_update_limits
        blk-wbt: remove wbt_update_limits
        blk-throttle: remove tg_drain_bios
        blk-throttle: remove blk_throtl_drain
        null_blk: force complete for timeout request
        blk-mq: drain I/O when all CPUs in a hctx are offline
        blk-mq: add blk_mq_all_tag_iter
        blk-mq: open code __blk_mq_alloc_request in blk_mq_alloc_request_hctx
        blk-mq: use BLK_MQ_NO_TAG in more places
        blk-mq: rename BLK_MQ_TAG_FAIL to BLK_MQ_NO_TAG
        blk-mq: move more request initialization to blk_mq_rq_ctx_init
        blk-mq: simplify the blk_mq_get_request calling convention
        blk-mq: remove the bio argument to ->prepare_request
        nvme: force complete cancelled requests
        blk-mq: blk-mq: provide forced completion method
        block: fix a warning when blkdev.h is included for !CONFIG_BLOCK builds
        block: blk-crypto-fallback: remove redundant initialization of variable err
        block: reduce part_stat_lock() scope
        block: use __this_cpu_add() instead of access by smp_processor_id()
        ...
      750a02ab
    • Hugh Dickins's avatar
      mm/migrate.c: attach_page_private already does the get_page · 1966391f
      Hugh Dickins authored
      Just finished bisecting mmotm, to find why a test which used to take
      four minutes now took more than an hour: the __buffer_migrate_page()
      cleanup left behind a get_page() which attach_page_private() now does.
      
      Fixes: cd0f3715 ("mm/migrate.c: call detach_page_private to cleanup code")
      Signed-off-by: default avatarHugh Dickins <hughd@google.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1966391f
    • Linus Torvalds's avatar
      Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm · faa39218
      Linus Torvalds authored
      Pull drm updates from Dave Airlie:
       "Highlights:
      
         - Core DRM had a lot of refactoring around managed drm resources to
           make drivers simpler.
      
         - Intel Tigerlake support is on by default
      
         - amdgpu now support p2p PCI buffer sharing and encrypted GPU memory
      
        Details:
      
        core:
         - uapi: error out EBUSY when existing master
         - uapi: rework SET/DROP MASTER permission handling
         - remove drm_pci.h
         - drm_pci* are now legacy
         - introduced managed DRM resources
         - subclassing support for drm_framebuffer
         - simple encoder helper
         - edid improvements
         - vblank + writeback documentation improved
         - drm/mm - optimise tree searches
         - port drivers to use devm_drm_dev_alloc
      
        dma-buf:
         - add flag for p2p buffer support
      
        mst:
         - ACT timeout improvements
         - remove drm_dp_mst_has_audio
         - don't use 2nd TX slot - spec recommends against it
      
        bridge:
         - dw-hdmi various improvements
         - chrontel ch7033 support
         - fix stack issues with old gcc
      
        hdmi:
         - add unpack function for drm infoframe
      
        fbdev:
         - misc fbdev driver fixes
      
        i915:
         - uapi: global sseu pinning
         - uapi: OA buffer polling
         - uapi: remove generated perf code
         - uapi: per-engine default property values in sysfs
         - Tigerlake GEN12 enabled.
         - Lots of gem refactoring
         - Tigerlake enablement patches
         - move to drm_device logging
         - Icelake gamma HW readout
         - push MST link retrain to hotplug work
         - bandwidth atomic helpers
         - ICL fixes
         - RPS/GT refactoring
         - Cherryview full-ppgtt support
         - i915 locking guidelines documented
         - require linear fb stride to be 512 multiple on gen9
         - Tigerlake SAGV support
      
        amdgpu:
         - uapi: encrypted GPU memory handling
         - uapi: add MEM_SYNC IB flag
         - p2p dma-buf support
         - export VRAM dma-bufs
         - FRU chip access support
         - RAS/SR-IOV updates
         - Powerplay locking fixes
         - VCN DPG (powergating) enablement
         - GFX10 clockgating fixes
         - DC fixes
         - GPU reset fixes
         - navi SDMA fix
         - expose FP16 for modesetting
         - DP 1.4 compliance fixes
         - gfx10 soft recovery
         - Improved Critical Thermal Faults handling
         - resizable BAR on gmc10
      
        amdkfd:
         - uapi: GWS resource management
         - track GPU memory per process
         - report PCI domain in topology
      
        radeon:
         - safe reg list generator fixes
      
        nouveau:
         - HD audio fixes on recent systems
         - vGPU detection (fail probe if we're on one, for now)
         - Interlaced mode fixes (mostly avoidance on Turing, which doesn't support it)
         - SVM improvements/fixes
         - NVIDIA format modifier support
         - Misc other fixes.
      
        adv7511:
         - HDMI SPDIF support
      
        ast:
         - allocate crtc state size
         - fix double assignment
         - fix suspend
      
        bochs:
         - drop connector register
      
        cirrus:
         - move to tiny drivers.
      
        exynos:
         - fix imported dma-buf mapping
         - enable runtime PM
         - fixes and cleanups
      
        mediatek:
         - DPI pin mode swap
         - config mipi_tx current/impedance
      
        lima:
         - devfreq + cooling device support
         - task handling improvements
         - runtime PM support
      
        pl111:
         - vexpress init improvements
         - fix module auto-load
      
        rcar-du:
         - DT bindings conversion to YAML
         - Planes zpos sanity check and fix
         - MAINTAINERS entry for LVDS panel driver
      
        mcde:
         - fix return value
      
        mgag200:
         - use managed config init
      
        stm:
         - read endpoints from DT
      
        vboxvideo:
         - use PCI managed functions
         - drop WC mtrr
      
        vkms:
         - enable cursor by default
      
        rockchip:
         - afbc support
      
        virtio:
         - various cleanups
      
        qxl:
         - fix cursor notify port
      
        hisilicon:
         - 128-byte stride alignment fix
      
        sun4i:
         - improved format handling"
      
      * tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm: (1401 commits)
        drm/amd/display: Fix potential integer wraparound resulting in a hang
        drm/amd/display: drop cursor position check in atomic test
        drm/amdgpu: fix device attribute node create failed with multi gpu
        drm/nouveau: use correct conflicting framebuffer API
        drm/vblank: Fix -Wformat compile warnings on some arches
        drm/amdgpu: Sync with VM root BO when switching VM to CPU update mode
        drm/amd/display: Handle GPU reset for DC block
        drm/amdgpu: add apu flags (v2)
        drm/amd/powerpay: Disable gfxoff when setting manual mode on picasso and raven
        drm/amdgpu: fix pm sysfs node handling (v2)
        drm/amdgpu: move gpu_info parsing after common early init
        drm/amdgpu: move discovery gfx config fetching
        drm/nouveau/dispnv50: fix runtime pm imbalance on error
        drm/nouveau: fix runtime pm imbalance on error
        drm/nouveau: fix runtime pm imbalance on error
        drm/nouveau/debugfs: fix runtime pm imbalance on error
        drm/nouveau/nouveau/hmm: fix migrate zero page to GPU
        drm/nouveau/nouveau/hmm: fix nouveau_dmem_chunk allocations
        drm/nouveau/kms/nv50-: Share DP SST mode_valid() handling with MST
        drm/nouveau/kms/nv50-: Move 8BPC limit for MST into nv50_mstc_get_modes()
        ...
      faa39218
    • Linus Torvalds's avatar
      Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma · cfa3b806
      Linus Torvalds authored
      Pull hmm updates from Jason Gunthorpe:
       "This series adds a selftest for hmm_range_fault() and several of the
        DEVICE_PRIVATE migration related actions, and another simplification
        for hmm_range_fault()'s API.
      
         - Simplify hmm_range_fault() with a simpler return code, no
           HMM_PFN_SPECIAL, and no customizable output PFN format
      
         - Add a selftest for hmm_range_fault() and DEVICE_PRIVATE related
           functionality"
      
      * tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
        MAINTAINERS: add HMM selftests
        mm/hmm/test: add selftests for HMM
        mm/hmm/test: add selftest driver for HMM
        mm/hmm: remove the customizable pfn format from hmm_range_fault
        mm/hmm: remove HMM_PFN_SPECIAL
        drm/amdgpu: remove dead code after hmm_range_fault()
        mm/hmm: make hmm_range_fault return 0 or -1
      cfa3b806
    • Linus Torvalds's avatar
      Merge tag 'pnp-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 19409891
      Linus Torvalds authored
      Pull PNP update from Rafael Wysocki:
       "Replace a zero-length array with a flexible-array (Gustavo A. R.
        Silva)"
      
      * tag 'pnp-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        PNPBIOS: Replace zero-length array with flexible-array
      19409891
    • Linus Torvalds's avatar
      Merge tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 118d6e98
      Linus Torvalds authored
      Pull ACPI updates from Rafael Wysocki:
       "These update the ACPICA code in the kernel to upstream revision
        20200430, fix several reference counting errors related to ACPI
        tables, add _Exx / _Lxx support to the GED driver, add a new
        acpi_evaluate_reg() helper, add new DPTF battery participant driver
        and extend the DPFT power participant driver, improve the handling of
        memory failures in the APEI code, add a blacklist entry to the
        backlight driver, update the PMIC driver and the processor idle
        driver, fix two kobject reference count leaks, and make a few janitory
        changes.
      
        Specifics:
      
         - Update the ACPICA code in the kernel to upstream revision 20200430:
      
            - Move acpi_gbl_next_cmd_num definition (Erik Kaneda).
      
            - Ignore AE_ALREADY_EXISTS status in the disassembler when parsing
              create operators (Erik Kaneda).
      
            - Add status checks to the dispatcher (Erik Kaneda).
      
            - Fix required parameters for _NIG and _NIH (Erik Kaneda).
      
            - Make acpi_protocol_lengths static (Yue Haibing).
      
         - Fix ACPI table reference counting errors in several places, mostly
           in error code paths (Hanjun Guo).
      
         - Extend the Generic Event Device (GED) driver to support _Exx and
           _Lxx handler methods (Ard Biesheuvel).
      
         - Add new acpi_evaluate_reg() helper and modify the ACPI PCI hotplug
           code to use it (Hans de Goede).
      
         - Add new DPTF battery participant driver and make the DPFT power
           participant driver create more sysfs device attributes (Srinivas
           Pandruvada).
      
         - Improve the handling of memory failures in APEI (James Morse).
      
         - Add new blacklist entry for Acer TravelMate 5735Z to the backlight
           driver (Paul Menzel).
      
         - Add i2c address for thermal control to the PMIC driver (Mauro
           Carvalho Chehab).
      
         - Allow the ACPI processor idle driver to work on platforms with only
           one ACPI C-state present (Zhang Rui).
      
         - Fix kobject reference count leaks in error code paths in two places
           (Qiushi Wu).
      
         - Delete unused proc filename macros and make some symbols static
           (Pascal Terjan, Zheng Zengkai, Zou Wei)"
      
      * tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
        ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
        ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
        ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
        ACPI: DPTF: Add battery participant driver
        ACPI: DPTF: Additional sysfs attributes for power participant driver
        ACPI: video: Use native backlight on Acer TravelMate 5735Z
        arm64: acpi: Make apei_claim_sea() synchronise with APEI's irq work
        ACPI: APEI: Kick the memory_failure() queue for synchronous errors
        mm/memory-failure: Add memory_failure_queue_kick()
        ACPI / PMIC: Add i2c address for thermal control
        ACPI: GED: add support for _Exx / _Lxx handler methods
        ACPI: Delete unused proc filename macros
        ACPI: hotplug: PCI: Use the new acpi_evaluate_reg() helper
        ACPI: utils: Add acpi_evaluate_reg() helper
        ACPI: debug: Make two functions static
        ACPI: sleep: Put the FACS table after using it
        ACPI: scan: Put SPCR and STAO table after using it
        ACPI: EC: Put the ACPI table after using it
        ACPI: APEI: Put the HEST table for error path
        ACPI: APEI: Put the error record serialization table for error path
        ...
      118d6e98
    • Linus Torvalds's avatar
      Merge tag 'pm-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 355ba37d
      Linus Torvalds authored
      Pull power management updates from Rafael Wysocki:
       "These rework the system-wide PM driver flags, make runtime switching
        of cpuidle governors easier, improve the user space hibernation
        interface code, add intel-speed-select interface documentation, add
        more debug messages to the ACPI code handling suspend to idle, update
        the cpufreq core and drivers, fix a minor issue in the cpuidle core
        and update two cpuidle drivers, improve the PM-runtime framework,
        update the Intel RAPL power capping driver, update devfreq core and
        drivers, and clean up the cpupower utility.
      
        Specifics:
      
         - Rework the system-wide PM driver flags to make them easier to
           understand and use and update their documentation (Rafael Wysocki,
           Alan Stern).
      
         - Allow cpuidle governors to be switched at run time regardless of
           the kernel configuration and update the related documentation
           accordingly (Hanjun Guo).
      
         - Improve the resume device handling in the user space hibernarion
           interface code (Domenico Andreoli).
      
         - Document the intel-speed-select sysfs interface (Srinivas
           Pandruvada).
      
         - Make the ACPI code handing suspend to idle print more debug
           messages to help diagnose issues with it (Rafael Wysocki).
      
         - Fix a helper routine in the cpufreq core and correct a typo in the
           struct cpufreq_driver kerneldoc comment (Rafael Wysocki, Wang
           Wenhu).
      
         - Update cpufreq drivers:
      
            - Make the intel_pstate driver start in the passive mode by
              default on systems without HWP (Rafael Wysocki).
      
            - Add i.MX7ULP support to the imx-cpufreq-dt driver and add
              i.MX7ULP to the cpufreq-dt-platdev blacklist (Peng Fan).
      
            - Convert the qoriq cpufreq driver to a platform one, make the
              platform code create a suitable device object for it and add
              platform dependencies to it (Mian Yousaf Kaukab, Geert
              Uytterhoeven).
      
            - Fix wrong compatible binding in the qcom driver (Ansuel Smith).
      
            - Build the omap driver by default for ARCH_OMAP2PLUS (Anders
              Roxell).
      
            - Add r8a7742 SoC support to the dt cpufreq driver (Lad
              Prabhakar).
      
         - Update cpuidle core and drivers:
      
            - Fix three reference count leaks in error code paths in the
              cpuidle core (Qiushi Wu).
      
            - Convert Qualcomm SPM to a generic cpuidle driver (Stephan
              Gerhold).
      
            - Fix up the execution order when entering a domain idle state in
              the PSCI driver (Ulf Hansson).
      
         - Fix a reference counting issue related to clock management and
           clean up two oddities in the PM-runtime framework (Rafael Wysocki,
           Andy Shevchenko).
      
         - Add ElkhartLake support to the Intel RAPL power capping driver and
           remove an unused local MSR definition from it (Jacob Pan, Sumeet
           Pawnikar).
      
         - Update devfreq core and drivers:
      
            - Replace strncpy() with strscpy() in the devfreq core and use
              lockdep asserts instead of manual checks for a locked mutex in
              it (Dmitry Osipenko, Krzysztof Kozlowski).
      
            - Add a generic imx bus scaling driver and make it register an
              interconnect device (Leonard Crestez, Gustavo A. R. Silva).
      
            - Make the cpufreq notifier in the tegra30 driver take boosting
              into account and delete an unuseful error message from that
              driver (Dmitry Osipenko, Markus Elfring).
      
         - Remove unneeded semicolon from the cpupower code (Zou Wei)"
      
      * tag 'pm-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (51 commits)
        cpuidle: Fix three reference count leaks
        PM: runtime: Replace pm_runtime_callbacks_present()
        PM / devfreq: Use lockdep asserts instead of manual checks for locked mutex
        PM / devfreq: imx-bus: Fix inconsistent IS_ERR and PTR_ERR
        PM / devfreq: Replace strncpy with strscpy
        PM / devfreq: imx: Register interconnect device
        PM / devfreq: Add generic imx bus scaling driver
        PM / devfreq: tegra30: Delete an error message in tegra_devfreq_probe()
        PM / devfreq: tegra30: Make CPUFreq notifier to take into account boosting
        PM: hibernate: Restrict writes to the resume device
        PM: runtime: clk: Fix clk_pm_runtime_get() error path
        cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver
        ACPI: EC: PM: s2idle: Extend GPE dispatching debug message
        ACPI: PM: s2idle: Print type of wakeup debug messages
        powercap: RAPL: remove unused local MSR define
        PM: runtime: Make clear what we do when conditions are wrong in rpm_suspend()
        Documentation: admin-guide: pm: Document intel-speed-select
        PM: hibernate: Split off snapshot dev option
        PM: hibernate: Incorporate concurrency handling
        Documentation: ABI: make current_governer_ro as a candidate for removal
        ...
      355ba37d
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v5.8-1' of git://git.infradead.org/linux-platform-drivers-x86 · a5a82e0a
      Linus Torvalds authored
      Pull x86 platform driver updates from Andy Shevchenko:
      
       - Add a support of the media keys on the ASUS laptop UX325JA/UX425JA
      
       - ASUS WMI driver can now handle 2-in-1 models T100TA, T100CHI, T100HA,
         T200TA
      
       - Big refactoring of Intel SCU driver with Elkhart Lake support has
         been added
      
       - Slim Bootloarder firmware update signaling WMI driver has been added
      
       - Thinkpad ACPI driver can handle dual fan configuration on new P and X
         models
      
       - Touchscreen DMI driver has been extended to support
          - MP-man MPWIN895CL tablet
          - ONDA V891 v5 tablet
          - techBite Arc 11.6
          - Trekstor Twin 10.1
          - Trekstor Yourbook C11B
          - Vinga J116
      
       - Virtual Button driver got a few fixes to detect mode of 2-in-1 tablet
         models
      
       - Intel Speed Select tools update
      
       - Plenty of small cleanups here and there
      
      * tag 'platform-drivers-x86-v5.8-1' of git://git.infradead.org/linux-platform-drivers-x86: (89 commits)
        platform/x86: dcdbas: Check SMBIOS for protected buffer address
        platform/x86: asus_wmi: Reserve more space for struct bias_args
        platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
        platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015)
        platform/x86: touchscreen_dmi: Update Trekstor Twin 10.1 entry
        platform/x86: touchscreen_dmi: Add info for the Trekstor Yourbook C11B
        platform/x86: hp-wmi: Introduce HPWMI_POWER_FW_OR_HW as convenient shortcut
        platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32()
        platform/x86: hp-wmi: Refactor postcode_store() to follow standard patterns
        platform/x86: acerhdf: replace space by * in modalias
        platform/x86: ISST: Increase timeout
        tools/power/x86/intel-speed-select: Fix invalid core mask
        tools/power/x86/intel-speed-select: Increase CPU count
        tools/power/x86/intel-speed-select: Fix json perf-profile output output
        platform/x86: dell-wmi: Ignore keyboard attached / detached events
        platform/x86: dell-laptop: don't register micmute LED if there is no token
        platform/x86: thinkpad_acpi: Replace custom approach by kstrtoint()
        platform/x86: thinkpad_acpi: Use strndup_user() in dispatch_proc_write()
        platform/x86: thinkpad_acpi: Replace next_cmd(&buf) with strsep(&buf, ",")
        platform/x86: intel-vbtn: Detect switch position before registering the input-device
        ...
      a5a82e0a
    • Linus Torvalds's avatar
      Merge tag 'mmc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc · c5d6c138
      Linus Torvalds authored
      Pull MMC updates from Ulf Hansson:
       "MMC core:
         - Enable erase/discard/trim support for all (e)MMC/SD hosts
         - Export information through sysfs about enhanced RPMB support (eMMC v5.1+)
         - Align the initialization commands for SDIO cards
         - Fix SDIO initialization to prevent memory leaks and NULL pointer errors
         - Do not export undefined MMC_NAME/MODALIAS for SDIO cards
         - Export device/vendor field from common CIS for SDIO cards
         - Move SDIO IDs from functional drivers to the common SDIO header
         - Introduce the ->request_atomic() host ops
      
        MMC host:
         - Improve support for HW busy signaling for several hosts
         - Converting some DT bindings to the json-schema
         - meson-mx-sdhc: Add driver and DT doc for the Amlogic Meson SDHC controller
         - meson-mx-sdio: Run a soft reset to recover from timeout/CRC error
         - mmci: Convert to use mmc_regulator_set_vqmmc()
         - mmci_stm32_sdmmc: Fix a couple of DMA bugs
         - mmci_stm32_sdmmc: Fix power on issue
         - renesas,mmcif,sdhci: Document r8a7742 DT bindings
         - renesas_sdhi: Add support for M3-W ES1.2 and 1.3 revisions
         - renesas_sdhi: Improvements to the TAP selection
         - renesas_sdhi/tmio: Further fixup runtime PM management at ->remove()
         - sdhci: Introduce ops to dump vendor specific registers
         - sdhci-cadence: Fix PHY write sequence
         - sdhci-esdhc-imx: Improve tunings
         - sdhci-esdhc-imx: Enable GPIO card detect as system wakeup
         - sdhci-esdhc-imx: Add HS400 support for i.MX6SLL
         - sdhci-esdhc-mcf: Add driver for the Coldfire/M5441X esdhc controller
         - m68k: mcf5441x: Add platform data to enable esdhc mmc controller
         - sdhci-msm: Improve HS400 tuning
         - sdhci-msm: Dump vendor specific registers at error
         - sdhci-msm: Add support for DLL/DDR properties provided from DT
         - sdhci-msm: Add support for the sm8250 variant
         - sdhci-msm: Add support for DVFS by converting to dev_pm_opp_set_rate()
         - sdhci-of-arasan: Add support for Intel Keem Bay variant
         - sdhci-of-arasan: Add support for Xilinx Versal SD variant
         - sdhci-of-dwcmshc: Add support for system suspend/resume
         - sdhci-of-dwcmshc: Fix UHS signaling support
         - sdhci-of-esdhc: Fix tuning for eMMC HS400 mode
         - sdhci-pci-gli: Add Genesys Logic GL9763E support
         - sdhci-sprd: Add support for the ->request_atomic() ops
         - sdhci-tegra: Avoid reading autocal timeout values when not applicable
      
        MEMSTICK:
         - Minor trivial update"
      
      * tag 'mmc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (127 commits)
        dt-bindings: mmc: Convert sdhci-pxa to json-schema
        mmc: sdhci-msm: Clear tuning done flag while hs400 tuning
        mmc: core: Export device/vendor ids from Common CIS for SDIO cards
        mmc: core: Do not export MMC_NAME= and MODALIAS=mmc:block for SDIO cards
        mmc: sdhci-of-at91: fix CALCR register being rewritten
        mmc: sdhci-esdhc-imx: disable the CMD CRC check for standard tuning
        mmc: sdhci-esdhc-imx: fix the mask for tuning start point
        mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin
        mmc: mmci_sdmmc: fix DMA API warning max segment size
        mmc: mmci_sdmmc: fix DMA API warning overlapping mappings
        mmc: sdhci-of-arasan: Add support for Intel Keem Bay
        dt-bindings: mmc: arasan: Add compatible strings for Intel Keem Bay
        mmc: sdhci-cadence: fix PHY write
        mmc: sdio: Sort all SDIO IDs in common include file
        mmc: sdio: Fix Cypress SDIO IDs macros in common include file
        mmc: sdio: Move SDIO IDs from b43-sdio driver to common include file
        mmc: sdio: Move SDIO IDs from ath10k driver to common include file
        mmc: sdio: Move SDIO IDs from ath6kl driver to common include file
        mmc: sdio: Move SDIO IDs from smssdio driver to common include file
        mmc: sdio: Move SDIO IDs from btmtksdio driver to common include file
        ...
      c5d6c138
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 94709049
      Linus Torvalds authored
      Merge updates from Andrew Morton:
       "A few little subsystems and a start of a lot of MM patches.
      
        Subsystems affected by this patch series: squashfs, ocfs2, parisc,
        vfs. With mm subsystems: slab-generic, slub, debug, pagecache, gup,
        swap, memcg, pagemap, memory-failure, vmalloc, kasan"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (128 commits)
        kasan: move kasan_report() into report.c
        mm/mm_init.c: report kasan-tag information stored in page->flags
        ubsan: entirely disable alignment checks under UBSAN_TRAP
        kasan: fix clang compilation warning due to stack protector
        x86/mm: remove vmalloc faulting
        mm: remove vmalloc_sync_(un)mappings()
        x86/mm/32: implement arch_sync_kernel_mappings()
        x86/mm/64: implement arch_sync_kernel_mappings()
        mm/ioremap: track which page-table levels were modified
        mm/vmalloc: track which page-table levels were modified
        mm: add functions to track page directory modifications
        s390: use __vmalloc_node in stack_alloc
        powerpc: use __vmalloc_node in alloc_vm_stack
        arm64: use __vmalloc_node in arch_alloc_vmap_stack
        mm: remove vmalloc_user_node_flags
        mm: switch the test_vmalloc module to use __vmalloc_node
        mm: remove __vmalloc_node_flags_caller
        mm: remove both instances of __vmalloc_node_flags
        mm: remove the prot argument to __vmalloc_node
        mm: remove the pgprot argument to __vmalloc
        ...
      94709049
    • Andrey Konovalov's avatar
      kasan: move kasan_report() into report.c · 4fba3758
      Andrey Konovalov authored
      The kasan_report() functions belongs to report.c, as it's a common
      functions that does error reporting.
      Reported-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarAndrey Konovalov <andreyknvl@google.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Tested-by: default avatarLeon Romanovsky <leon@kernel.org>
      Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
      Cc: Alexander Potapenko <glider@google.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Leon Romanovsky <leonro@mellanox.com>
      Link: http://lkml.kernel.org/r/78a81fde6eeda9db72a7fd55fbc33173a515e4b1.1589297433.git.andreyknvl@google.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4fba3758
    • Jing Xia's avatar
      mm/mm_init.c: report kasan-tag information stored in page->flags · 86fea8b4
      Jing Xia authored
      The pageflags_layout_usage shows incorrect message by means of
      mminit_loglevel when Kasan runs in the mode of software tag-based
      enabled with CONFIG_KASAN_SW_TAGS.  This patch corrects it and reports
      kasan-tag information.
      Signed-off-by: default avatarJing Xia <jing.xia@unisoc.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Cc: Chunyan Zhang <chunyan.zhang@unisoc.com>
      Cc: Orson Zhai <orson.zhai@unisoc.com>
      Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
      Cc: Alexander Potapenko <glider@google.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Link: http://lkml.kernel.org/r/1586929370-10838-1-git-send-email-jing.xia.mail@gmail.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      86fea8b4
    • Kees Cook's avatar
      ubsan: entirely disable alignment checks under UBSAN_TRAP · 9380ce24
      Kees Cook authored
      Commit 8d58f222 ("ubsan: disable UBSAN_ALIGNMENT under
      COMPILE_TEST") tried to fix the pathological results of UBSAN_ALIGNMENT
      with UBSAN_TRAP (which objtool would rightly scream about), but it made
      an assumption about how COMPILE_TEST gets set (it is not set for
      randconfig).  As a result, we need a bigger hammer here: just don't
      allow the alignment checks with the trap mode.
      
      Fixes: 8d58f222 ("ubsan: disable UBSAN_ALIGNMENT under COMPILE_TEST")
      Reported-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Elena Petrova <lenaptr@google.com>
      Link: http://lkml.kernel.org/r/202005291236.000FCB6@keescook
      Link: https://lore.kernel.org/lkml/742521db-1e8c-0d7a-1ed4-a908894fb497@infradead.org/Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9380ce24
    • Andrey Konovalov's avatar
      kasan: fix clang compilation warning due to stack protector · ca734cc6
      Andrey Konovalov authored
      KASAN uses a single cc-option invocation to disable both conserve-stack
      and stack-protector flags.  The former flag is not present in Clang,
      which causes cc-option to fail, and results in stack-protector being
      enabled.
      
      Fix by using separate cc-option calls for each flag.  Also collect all
      flags in a variable to avoid calling cc-option multiple times for
      different files.
      Reported-by: default avatarQian Cai <cai@lca.pw>
      Signed-off-by: default avatarAndrey Konovalov <andreyknvl@google.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Reviewed-by: default avatarMarco Elver <elver@google.com>
      Link: http://lkml.kernel.org/r/c2f0c8e4048852ae014f4a391d96ca42d27e3255.1590779332.git.andreyknvl@google.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ca734cc6
    • Joerg Roedel's avatar
      x86/mm: remove vmalloc faulting · 7f0a002b
      Joerg Roedel authored
      Remove fault handling on vmalloc areas, as the vmalloc code now takes
      care of synchronizing changes to all page-tables in the system.
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Link: http://lkml.kernel.org/r/20200515140023.25469-8-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      7f0a002b
    • Joerg Roedel's avatar
      mm: remove vmalloc_sync_(un)mappings() · 73f693c3
      Joerg Roedel authored
      These functions are not needed anymore because the vmalloc and ioremap
      mappings are now synchronized when they are created or torn down.
      
      Remove all callers and function definitions.
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Tested-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Link: http://lkml.kernel.org/r/20200515140023.25469-7-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      73f693c3
    • Joerg Roedel's avatar
      x86/mm/32: implement arch_sync_kernel_mappings() · 86cf69f1
      Joerg Roedel authored
      Implement the function to sync changes in vmalloc and ioremap ranges to
      all page-tables.
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Link: http://lkml.kernel.org/r/20200515140023.25469-6-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      86cf69f1
    • Joerg Roedel's avatar
      x86/mm/64: implement arch_sync_kernel_mappings() · 8e19843c
      Joerg Roedel authored
      Implement the function to sync changes in vmalloc and ioremap ranges to
      all page-tables.
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Link: http://lkml.kernel.org/r/20200515140023.25469-5-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8e19843c
    • Joerg Roedel's avatar
      mm/ioremap: track which page-table levels were modified · 6c0c7d2b
      Joerg Roedel authored
      Track at which levels in the page-table entries were modified by
      ioremap_page_range().
      
      After the page-table has been modified, use that information do decide
      whether the new arch_sync_kernel_mappings() needs to be called.  The
      iounmap path re-uses vunmap(), which has already been taken care of.
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Link: http://lkml.kernel.org/r/20200515140023.25469-4-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6c0c7d2b
    • Joerg Roedel's avatar
      mm/vmalloc: track which page-table levels were modified · 2ba3e694
      Joerg Roedel authored
      Track at which levels in the page-table entries were modified by
      vmap/vunmap.
      
      After the page-table has been modified, use that information do decide
      whether the new arch_sync_kernel_mappings() needs to be called.
      
      [akpm@linux-foundation.org: map_kernel_range_noflush() needs the arch_sync_kernel_mappings() call]
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Link: http://lkml.kernel.org/r/20200515140023.25469-3-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2ba3e694
    • Joerg Roedel's avatar
      mm: add functions to track page directory modifications · d8626138
      Joerg Roedel authored
      Patch series "mm: Get rid of vmalloc_sync_(un)mappings()", v3.
      
      After the recent issue with vmalloc and tracing code[1] on x86 and a
      long history of previous issues related to the vmalloc_sync_mappings()
      interface, I thought the time has come to remove it.  Please see [2],
      [3], and [4] for some other issues in the past.
      
      The patches add tracking of page-table directory changes to the vmalloc
      and ioremap code.  Depending on which page-table levels changes have
      been made, a new per-arch function is called:
      arch_sync_kernel_mappings().
      
      On x86-64 with 4-level paging, this function will not be called more
      than 64 times in a systems runtime (because vmalloc-space takes 64 PGD
      entries which are only populated, but never cleared).
      
      As a side effect this also allows to get rid of vmalloc faults on x86,
      making it safe to touch vmalloc'ed memory in the page-fault handler.
      Note that this potentially includes per-cpu memory.
      
      This patch (of 7):
      
      Add page-table allocation functions which will keep track of changed
      directory entries.  They are needed for new PGD, P4D, PUD, and PMD
      entries and will be used in vmalloc and ioremap code to decide whether
      any changes in the kernel mappings need to be synchronized between
      page-tables in the system.
      Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: "H . Peter Anvin" <hpa@zytor.com>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Christoph Hellwig <hch@lst.de>
      Link: http://lkml.kernel.org/r/20200515140023.25469-1-joro@8bytes.org
      Link: http://lkml.kernel.org/r/20200515140023.25469-2-joro@8bytes.orgSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d8626138