1. 27 Oct, 2016 1 commit
    • Linus Torvalds's avatar
      mm: remove per-zone hashtable of bitlock waitqueues · 9dcb8b68
      Linus Torvalds authored
      The per-zone waitqueues exist because of a scalability issue with the
      page waitqueues on some NUMA machines, but it turns out that they hurt
      normal loads, and now with the vmalloced stacks they also end up
      breaking gfs2 that uses a bit_wait on a stack object:
      
           wait_on_bit(&gh->gh_iflags, HIF_WAIT, TASK_UNINTERRUPTIBLE)
      
      where 'gh' can be a reference to the local variable 'mount_gh' on the
      stack of fill_super().
      
      The reason the per-zone hash table breaks for this case is that there is
      no "zone" for virtual allocations, and trying to look up the physical
      page to get at it will fail (with a BUG_ON()).
      
      It turns out that I actually complained to the mm people about the
      per-zone hash table for another reason just a month ago: the zone lookup
      also hurts the regular use of "unlock_page()" a lot, because the zone
      lookup ends up forcing several unnecessary cache misses and generates
      horrible code.
      
      As part of that earlier discussion, we had a much better solution for
      the NUMA scalability issue - by just making the page lock have a
      separate contention bit, the waitqueue doesn't even have to be looked at
      for the normal case.
      
      Peter Zijlstra already has a patch for that, but let's see if anybody
      even notices.  In the meantime, let's fix the actual gfs2 breakage by
      simplifying the bitlock waitqueues and removing the per-zone issue.
      Reported-by: default avatarAndreas Gruenbacher <agruenba@redhat.com>
      Tested-by: default avatarBob Peterson <rpeterso@redhat.com>
      Acked-by: default avatarMel Gorman <mgorman@techsingularity.net>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Steven Whitehouse <swhiteho@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9dcb8b68
  2. 25 Oct, 2016 6 commits
    • Linus Torvalds's avatar
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 9fe68cad
      Linus Torvalds authored
      Pull crypto fix from Herbert Xu:
       "This fixes a regression caused by the stack vmalloc change"
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        hwrng: core - Don't use a stack buffer in add_early_randomness()
      9fe68cad
    • Linus Torvalds's avatar
      Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux · b5cd8917
      Linus Torvalds authored
      Pull clk fixes from Stephen Boyd:
       "This is the first batch of clk driver fixes for this release.
      
        We have a handful of fixes for the uniphier clk driver that was
        introduced recently, as well as Kconfig option hiding, module
        autoloading markings, and a few fixes for clk_hw based registration
        patches that went in this merge window"
      
      * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
        clk: at91: Fix a return value in case of error
        clk: uniphier: rename MIO clock to SD clock for Pro5, PXs2, LD20 SoCs
        clk: uniphier: fix memory overrun bug
        clk: hi6220: use CLK_OF_DECLARE_DRIVER for sysctrl and mediactrl clock init
        clk: mvebu: armada-37xx-periph: Fix the clock gate flag
        clk: bcm2835: Clamp the PLL's requested rate to the hardware limits.
        clk: max77686: fix number of clocks setup for clk_hw based registration
        clk: mvebu: armada-37xx-periph: Fix the clock provider registration
        clk: core: add __init decoration for CLK_OF_DECLARE_DRIVER function
        clk: mediatek: Add hardware dependency
        clk: samsung: clk-exynos-audss: Fix module autoload
        clk: uniphier: fix type of variable passed to regmap_read()
        clk: uniphier: add system clock support for sLD3 SoC
      b5cd8917
    • Linus Torvalds's avatar
      Merge tag 'gpio-v4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio · 1ce5bdb8
      Linus Torvalds authored
      Pull GPIO fixes from Linus Walleij:
       "Here is a set of GPIO fixes for the v4.9 kernel series:
      
         - Fix up off-by one and line offset validation, info leak to
           userspace, and reject invalid flags. Those are especially valuable
           hardening patches from Lars-Peter Clausen, all tagged for stable.
      
         - Fix module autoload for TS4800 and ATH79.
      
         - Correct the IRQ handler for MPC8xxx to use handle_level_irq() as it
           (a) reacts to edges not levels and (b) even implements .irq_ack().
           We were missing IRQs here.
      
         - Fix the error path for acpi_dev_gpio_irq_get()
      
         - Fix a memory leak in the MXS driver.
      
         - Fix an annoying typo in the STMPE driver.
      
         - Put a dependency on sysfs to the mockup driver"
      
      * tag 'gpio-v4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
        gpio: mpc8xxx: Correct irq handler function
        gpio: ath79: Fix module autoload
        gpio: ts4800: Fix module autoload
        gpio: GPIO_GET_LINEEVENT_IOCTL: Reject invalid line and event flags
        gpio: GPIO_GET_LINEHANDLE_IOCTL: Reject invalid line flags
        gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak
        gpio: GPIO_GET_LINEEVENT_IOCTL: Validate line offset
        gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak
        gpio: GPIO_GET_LINEHANDLE_IOCTL: Validate line offset
        gpio: GPIO_GET_CHIPINFO_IOCTL: Fix information leak
        gpio: GPIO_GET_CHIPINFO_IOCTL: Fix line offset validation
        gpio / ACPI: fix returned error from acpi_dev_gpio_irq_get()
        gpio: mockup: add sysfs dependency
        gpio: stmpe: || vs && typo
        gpio: mxs: Unmap region obtained by of_iomap
        gpio/board.txt: point to gpiod_set_value
      1ce5bdb8
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · aa34e07e
      Linus Torvalds authored
      Pull xen fixes from David Vrabel:
      
       - advertise control feature flags in xenstore
      
       - fix x86 build when XEN_PVHVM is disabled
      
      * tag 'for-linus-4.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        xenbus: check return value of xenbus_scanf()
        xenbus: prefer list_for_each()
        x86: xen: move cpu_up functions out of ifdef
        xenbus: advertise control feature flags
      aa34e07e
    • Lorenzo Stoakes's avatar
      mm: unexport __get_user_pages() · 0d731759
      Lorenzo Stoakes authored
      This patch unexports the low-level __get_user_pages() function.
      
      Recent refactoring of the get_user_pages* functions allow flags to be
      passed through get_user_pages() which eliminates the need for access to
      this function from its one user, kvm.
      
      We can see that the two calls to get_user_pages() which replace
      __get_user_pages() in kvm_main.c are equivalent by examining their call
      stacks:
      
        get_user_page_nowait():
          get_user_pages(start, 1, flags, page, NULL)
          __get_user_pages_locked(current, current->mm, start, 1, page, NULL, NULL,
      			    false, flags | FOLL_TOUCH)
          __get_user_pages(current, current->mm, start, 1,
      		     flags | FOLL_TOUCH | FOLL_GET, page, NULL, NULL)
      
        check_user_page_hwpoison():
          get_user_pages(addr, 1, flags, NULL, NULL)
          __get_user_pages_locked(current, current->mm, addr, 1, NULL, NULL, NULL,
      			    false, flags | FOLL_TOUCH)
          __get_user_pages(current, current->mm, addr, 1, flags | FOLL_TOUCH, NULL,
      		     NULL, NULL)
      Signed-off-by: default avatarLorenzo Stoakes <lstoakes@gmail.com>
      Acked-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0d731759
    • Linus Torvalds's avatar
      proc: don't use FOLL_FORCE for reading cmdline and environment · 272ddc8b
      Linus Torvalds authored
      Now that Lorenzo cleaned things up and made the FOLL_FORCE users
      explicit, it becomes obvious how some of them don't really need
      FOLL_FORCE at all.
      
      So remove FOLL_FORCE from the proc code that reads the command line and
      arguments from user space.
      
      The mem_rw() function actually does want FOLL_FORCE, because gdd (and
      possibly many other debuggers) use it as a much more convenient version
      of PTRACE_PEEKDATA, but we should consider making the FOLL_FORCE part
      conditional on actually being a ptracer.  This does not actually do
      that, just moves adds a comment to that effect and moves the gup_flags
      settings next to each other.
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      272ddc8b
  3. 24 Oct, 2016 6 commits
  4. 23 Oct, 2016 6 commits
    • Linus Torvalds's avatar
      Merge tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs · 5ff93abc
      Linus Torvalds authored
      Pull UBI[FS] fixes from Richard Weinberger:
       "This contains fixes for issues in both UBI and UBIFS:
      
         - Fallout from the merge window, refactoring UBI code introduced some
           issues.
      
         - Fixes for an UBIFS readdir bug which can cause getdents() to busy
           loop for ever and a bug in the UBIFS xattr code"
      
      * tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs:
        ubifs: Abort readdir upon error
        UBI: Fix crash in try_recover_peb()
        ubi: fix swapped arguments to call to ubi_alloc_aeb
        ubifs: Fix xattr_names length in exit paths
        ubifs: Rename ubifs_rename2
      5ff93abc
    • Linus Torvalds's avatar
      Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · c761923c
      Linus Torvalds authored
      Pull ext4 fixes from Ted Ts'o:
       "A few bug fixes and add some missing KERN_CONT annotations"
      
      * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
        ext4: add missing KERN_CONT to a few more debugging uses
        fscrypto: lock inode while setting encryption policy
        ext4: correct endianness conversion in __xattr_check_inode()
        fscrypto: make XTS tweak initialization endian-independent
        ext4: do not advertise encryption support when disabled
        jbd2: fix incorrect unlock on j_list_lock
        ext4: super.c: Update logging style using KERN_CONT
      c761923c
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · a55da8a0
      Linus Torvalds authored
      Pull SCSI target fixes from Nicholas Bellinger:
       "Here are the outstanding target-pending fixes for v4.9-rc2.
      
        This includes:
      
         - Fix v4.1.y+ reference leak regression with concurrent TMR
           ABORT_TASK + session shutdown. (Vaibhav Tandon)
      
         - Enable tcm_fc w/ SCF_USE_CPUID to avoid host exchange timeouts
           (Hannes)
      
         - target/user error sense handling fixes. (Andy + MNC + HCH)
      
         - Fix iscsi-target NOP_OUT error path iscsi_cmd descriptor leak
           (Varun)
      
         - Two EXTENDED_COPY SCSI status fixes for ESX VAAI (Dinesh Israni +
           Nixon Vincent)
      
         - Revert a v4.8 residual overflow change, that breaks sg_inq with
           small allocation lengths.
      
        There are a number of folks stress testing the v4.1.y regression fix
        in their environments, and more folks doing iser-target I/O stress
        testing atop recent v4.x.y code.
      
        There is also one v4.2.y+ RCU conversion regression related to
        explicit NodeACL configfs changes, that is still being tracked down"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
        target/tcm_fc: use CPU affinity for responses
        target/tcm_fc: Update debugging statements to match libfc usage
        target/tcm_fc: return detailed error in ft_sess_create()
        target/tcm_fc: print command pointer in debug message
        target: fix potential race window in target_sess_cmd_list_waiting()
        Revert "target: Fix residual overflow handling in target_complete_cmd_with_length"
        target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code
        target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE
        target: Re-add missing SCF_ACK_KREF assignment in v4.1.y
        iscsi-target: fix iscsi cmd leak
        iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited"
        target/user: Fix comments to not refer to data ring
        target/user: Return an error if cmd data size is too large
        target/user: Use sense_reason_t in tcmu_queue_cmd_ring
      a55da8a0
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-linus-v4.9-rc2' of... · e6995f22
      Linus Torvalds authored
      Merge tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon fixes from Guenter Roeck:
       "Couple of hwmon fixes:
      
        Fix a potential ERR_PTR dereference in max31790 driver, and handle
        temperature readings below 0 in adm9240 driver"
      
      * tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: (max31790) potential ERR_PTR dereference
        hwmon: (adm9240) handle temperature readings below 0
      e6995f22
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi · 5766e9d2
      Linus Torvalds authored
      Pull IPMI updates from Corey Minyard:
       "A small bug fix and a new driver for acting as an IPMI device.
      
        I was on vacation during the merge window (a long vacation) but this
        is a bug fix that should go in and a new driver that shouldn't hurt
        anything.
      
        This has been in linux-next for a month or so"
      
      * tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
        ipmi: fix crash on reading version from proc after unregisted bmc
        ipmi/bt-bmc: remove redundant return value check of platform_get_resource()
        ipmi/bt-bmc: add a dependency on ARCH_ASPEED
        ipmi: Fix ioremap error handling in bt-bmc
        ipmi: add an Aspeed BT IPMI BMC driver
      5766e9d2
    • Javier Martinez Canillas's avatar
      gpio: ath79: Fix module autoload · 6d8d271e
      Javier Martinez Canillas authored
      If the driver is built as a module, autoload won't work because the module
      alias information is not filled. So user-space can't match the registered
      device with the corresponding module.
      
      Export the module alias information using the MODULE_DEVICE_TABLE() macro.
      
      Before this patch:
      
      $ modinfo drivers/gpio/gpio-ath79.ko | grep alias
      $
      
      After this patch:
      
      $ modinfo drivers/gpio/gpio-ath79.ko | grep alias
      alias:          of:N*T*Cqca,ar9340-gpioC*
      alias:          of:N*T*Cqca,ar9340-gpio
      alias:          of:N*T*Cqca,ar7100-gpioC*
      alias:          of:N*T*Cqca,ar7100-gpio
      Signed-off-by: default avatarJavier Martinez Canillas <javier@osg.samsung.com>
      Acked-by: default avatarAban Bedel <albeu@free.fr>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      6d8d271e
  5. 22 Oct, 2016 9 commits
    • Linus Torvalds's avatar
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0c2b6dc4
      Linus Torvalds authored
      Pull timer updates from Thomas Gleixner:
       "This updates contains:
      
         - A revert which addresses a boot failure on ARM Sun5i platforms
      
         - A new clocksource driver, which has been delayed beyond rc1 due to
           an interrupt driver issue which was unearthed by this driver. The
           debugging of that issue and the discussion about the proper
           solution made this driver miss the merge window. There is no point
           in delaying it for a full cycle as it completes the basic mainline
           support for the new JCore platform and does not create any risk
           outside of that platform"
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"
        clocksource: Add J-Core timer/clocksource driver
        of: Add J-Core timer bindings
      0c2b6dc4
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3e9679a3
      Linus Torvalds authored
      Pull x86 fixes from Ingo Molnar:
       "Three fixes, a hw-enablement and a cross-arch fix/enablement change:
      
         - SGI/UV fix for older platforms
      
         - x32 signal handling fix
      
         - older x86 platform bootup APIC fix
      
         - AVX512-4VNNIW (Neural Network Instructions) and AVX512-4FMAPS
           (Multiply Accumulation Single precision instructions) enablement.
      
         - move thread_info back into x86 specific code, to make life easier
           for other architectures trying to make use of
           CONFIG_THREAD_INFO_IN_TASK_STRUCT=y"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/boot/smp: Don't try to poke disabled/non-existent APIC
        sched/core, x86: Make struct thread_info arch specific again
        x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi()
        x86/platform/UV: Fix support for EFI_OLD_MEMMAP after BIOS callback updates
        x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS features
        x86/vmware: Skip timer_irq_works() check on VMware
      3e9679a3
    • Linus Torvalds's avatar
      Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 86c5bf71
      Linus Torvalds authored
      Pull vmap stack fixes from Ingo Molnar:
       "This is fallout from CONFIG_HAVE_ARCH_VMAP_STACK=y on x86: stack
        accesses that used to be just somewhat questionable are now totally
        buggy.
      
        These changes try to do it without breaking the ABI: the fields are
        left there, they are just reporting zero, or reporting narrower
        information (the maps file change)"
      
      * 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        mm: Change vm_is_stack_for_task() to vm_is_stack_for_current()
        fs/proc: Stop trying to report thread stacks
        fs/proc: Stop reporting eip and esp in /proc/PID/stat
        mm/numa: Remove duplicated include from mprotect.c
      86c5bf71
    • Linus Torvalds's avatar
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · bfb7bfef
      Linus Torvalds authored
      Pull irq fixes from Ingo Molnar:
       "Mostly irqchip driver fixes, plus a symbol export"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        kernel/irq: Export irq_set_parent()
        irqchip/gic: Add missing \n to CPU IF adjustment message
        irqchip/jcore: Don't show Kconfig menu item for driver
        irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
        irqchip/gic-v3-its: Fix entry size mask for GITS_BASER
        irqchip/gic-v3-its: Fix 64bit GIC{R,ITS}_TYPER accesses
      bfb7bfef
    • Linus Torvalds's avatar
      Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 90e01058
      Linus Torvalds authored
      Pull EFI fixes from Ingo Molnar:
       "Add Ard Biesheuvel as EFI co-maintainer, plus fix an ARM build bug
        with older toolchains"
      
      * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        efi/arm: Fix absolute relocation detection for older toolchains
        MAINTAINERS: Add myself as EFI maintainer
      90e01058
    • Ville Syrjälä's avatar
      x86/boot/smp: Don't try to poke disabled/non-existent APIC · ff856051
      Ville Syrjälä authored
      Apparently trying to poke a disabled or non-existent APIC
      leads to a box that doesn't even boot. Let's not do that.
      
      No real clue if this is the right fix, but at least my
      P3 machine boots again.
      Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: Eric Biederman <ebiederm@xmission.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: Len Brown <len.brown@intel.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: dyoung@redhat.com
      Cc: kexec@lists.infradead.org
      Cc: stable@vger.kernel.org
      Fixes: 2a51fe08 ("arch/x86: Handle non enumerated CPU after physical hotplug")
      Link: http://lkml.kernel.org/r/1477102684-5092-1-git-send-email-ville.syrjala@linux.intel.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      ff856051
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · dcd4693c
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "Fixes marked for stable:
         - Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
         - cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)
      
        Fixes for code merged this cycle:
         - Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
         - Drop dump_numa_memory_topology() (Michael Ellerman)
         - Fix numa topology console print (Aneesh Kumar K.V)
         - Ignore the pkey system calls for now (Stephen Rothwell)"
      
      * tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc: Ignore the pkey system calls for now
        powerpc: Fix numa topology console print
        powerpc/mm: Drop dump_numa_memory_topology()
        cxl: Prevent adapter reset if an active context exists
        powerpc/boot: Fix boot on systems with uncompressed kernel image
        powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
      dcd4693c
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · a23b27ae
      Linus Torvalds authored
      Pull KVM fixes from Radim Krčmář:
       "ARM:
         - avoid livelock when walking guest page tables
         - fix HYP mode static keys without CC_HAVE_ASM_GOTO
      
        MIPS:
         - fix a build error without TRACEPOINTS_ENABLED
      
        s390:
         - reject a malformed userspace configuration
      
        x86:
         - suppress a warning without CONFIG_CPU_FREQ
         - initialize whole irq_eoi array"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        arm/arm64: KVM: Map the BSS at HYP
        arm64: KVM: Take S1 walks into account when determining S2 write faults
        KVM: s390: reject invalid modes for runtime instrumentation
        kvm: x86: memset whole irq_eoi
        kvm/x86: Fix unused variable warning in kvm_timer_init()
        KVM: MIPS: Add missing uaccess.h include
      a23b27ae
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs · 02593ac6
      Linus Torvalds authored
      Pull NFS client bugfixes from Anna Schumaker:
       "Just two bugfixes this time:
      
        Stable bugfix:
         - Fix last_write_offset incorrectly set to page boundary
      
        Other bugfix:
         - Fix missing-braces warning"
      
      * tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
        nfs4: fix missing-braces warning
        pnfs/blocklayout: fix last_write_offset incorrectly set to page boundary
      02593ac6
  6. 21 Oct, 2016 12 commits
    • Linus Torvalds's avatar
      Merge tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 43ef55da
      Linus Torvalds authored
      Pull ACPI fixes from Rafael Wysocki:
       "These fix an issue related to system resume in the new WDAT-based
        watchdog driver and a return value of a stub function in the ACPI CPPC
        framework.
      
        Specifics:
      
         - Update the ACPI WDAT-based watchdog driver to ping the hardware
           during system resume to prevent a reset from occurring after the
           resume is complete (Mika Westerberg).
      
         - Fix the return value of the pcc_mbox_request_channel() stub for
           CONFIG_PCC unset (Hoan Tran)"
      
      * tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        watchdog: wdat_wdt: Ping the watchdog on resume
        mailbox: PCC: Fix return value of pcc_mbox_request_channel()
      43ef55da
    • Rafael J. Wysocki's avatar
      Merge branches 'acpi-wdat' and 'acpi-cppc' · 956c8974
      Rafael J. Wysocki authored
      * acpi-wdat:
        watchdog: wdat_wdt: Ping the watchdog on resume
      
      * acpi-cppc:
        mailbox: PCC: Fix return value of pcc_mbox_request_channel()
      956c8974
    • Thomas Gleixner's avatar
      Merge tag 'gic-fixes-for-4.9-rc2' of... · a442950d
      Thomas Gleixner authored
      Merge tag 'gic-fixes-for-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
      
      Pull GIC updates from Marc Zyngier:
      
       - Fix for 32bit accesses that should be 64bit on 64bit machines
       - Fix for a field decoding macro
       - Beautify a warning message
      a442950d
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 6edc51a8
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Five small fixes.
      
        Some of these, like the nested spinlock overwriting saved flags and
        the Kasan use after free look serious, but they seem not to have been
        picked up in testing or seen in the field.
      
        The biggest user visible issue is probably the wrong device handler
        for Clariion, which means that alua doesn't bind to the array like it
        should"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: ipr: Fix async error WARN_ON
        scsi: zfcp: spin_lock_irqsave() is not nestable
        scsi: Remove one useless stack variable
        scsi: Fix use-after-free
        scsi: Replace wrong device handler name for CLARiiON arrays
      6edc51a8
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · ecd06f28
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A set of fixes that missed the merge window, mostly due to me being
        away around that time.
      
        Nothing major here, a mix of nvme cleanups and fixes, and one fix for
        the badblocks handling"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        nvmet: use symbolic constants for CNS values
        nvme: use symbolic constants for CNS values
        nvme.h: add an enum for cns values
        nvme.h: don't use uuid_be
        nvme.h: resync with nvme-cli
        nvme: Add tertiary number to NVME_VS
        nvme : Add sysfs entry for NVMe CMBs when appropriate
        nvme: don't schedule multiple resets
        nvme: Delete created IO queues on reset
        nvme: Stop probing a removed device
        badblocks: fix overlapping check for clearing
      ecd06f28
    • Linus Torvalds's avatar
      Merge tag 'pci-v4.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · e59f30b4
      Linus Torvalds authored
      Pull PCI fixes from Bjorn Helgaas:
       "This includes:
      
         - Fix for a Layerscape driver issue that causes a use-before-set
           crash
      
         - Maintainer update for the Synopsis prototyping device driver"
      
      * tag 'pci-v4.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        PCI: designware-plat: Update author email address
        PCI: layerscape: Fix drvdata usage before assignment
        PCI: designware-plat: Change maintainer to Jose Abreu
      e59f30b4
    • Radim Krčmář's avatar
      Merge tag 'kvm-arm-for-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm · 658f7c4b
      Radim Krčmář authored
      KVM/ARM updates for 4.9-rc2
      
      - Handle faults generated by the page table walker as being writes
      - Map the BSS at EL2
      658f7c4b
    • Marc Zyngier's avatar
      arm/arm64: KVM: Map the BSS at HYP · c8ea0395
      Marc Zyngier authored
      When used with a compiler that doesn't implement "asm goto"
      (such as the AArch64 port of GCC 4.8), jump labels generate a
      memory access to find out about the value of the key (instead
      of just patching the code). The key itself is likely to be
      stored in the BSS.
      
      This is perfectly fine, except that we don't map the BSS at HYP,
      leading to an exploding kernel at the first access. The obvious
      fix is simply to map the BSS there (which should have been done
      a long while ago, but hey...).
      Reported-by: default avatarEric Auger <eric.auger@redhat.com>
      Tested-by: default avatarEric Auger <eric.auger@redhat.com>
      Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      c8ea0395
    • Will Deacon's avatar
      arm64: KVM: Take S1 walks into account when determining S2 write faults · 60e21a0e
      Will Deacon authored
      The WnR bit in the HSR/ESR_EL2 indicates whether a data abort was
      generated by a read or a write instruction. For stage 2 data aborts
      generated by a stage 1 translation table walk (i.e. the actual page
      table access faults at EL2), the WnR bit therefore reports whether the
      instruction generating the walk was a load or a store, *not* whether the
      page table walker was reading or writing the entry.
      
      For page tables marked as read-only at stage 2 (e.g. due to KSM merging
      them with the tables from another guest), this could result in livelock,
      where a page table walk generated by a load instruction attempts to
      set the access flag in the stage 1 descriptor, but fails to trigger
      CoW in the host since only a read fault is reported.
      
      This patch modifies the arm64 kvm_vcpu_dabt_iswrite function to
      take into account stage 2 faults in stage 1 walks. Since DBM cannot be
      disabled at EL2 for CPUs that implement it, we assume that these faults
      are always causes by writes, avoiding the livelock situation at the
      expense of occasional, spurious CoWs.
      
      We could, in theory, do a bit better by checking the guest TCR
      configuration and inspecting the page table to see why the PTE faulted.
      However, I doubt this is measurable in practice, and the threat of
      livelock is real.
      
      Cc: <stable@vger.kernel.org>
      Cc: Julien Grall <julien.grall@arm.com>
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Reviewed-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      60e21a0e
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-v4.9-rc2-part2' of git://people.freedesktop.org/~airlied/linux · ec366cd1
      Linus Torvalds authored
      Pull more drm fixes from Dave Airlie:
       "Mainly some vmwgfx fixes, but also some fixes for armada, etnaviv and
        fsl-dcu"
      
      * tag 'drm-fixes-for-v4.9-rc2-part2' of git://people.freedesktop.org/~airlied/linux:
        drm/fsl-dcu: enable pixel clock when enabling CRTC
        drm/fsl-dcu: do not transfer registers in mode_set_nofb
        drm/fsl-dcu: do not transfer registers on plane init
        drm/fsl-dcu: enable TCON bypass mode by default
        drm/vmwgfx: Adjust checks for null pointers in 13 functions
        drm/vmwgfx: Use memdup_user() rather than duplicating its implementation
        drm/vmwgfx: Use kmalloc_array() in vmw_surface_define_ioctl()
        drm/vmwgfx: Avoid validating views on view destruction
        drm/vmwgfx: Limit the user-space command buffer size
        drm/vmwgfx: Remove a leftover debug printout
        drm/vmwgfx: Allow resource relocations on byte boundaries
        drm/vmwgfx: Enable SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
        drm/vmwgfx: Remove call to reservation_object_test_signaled_rcu before wait
        drm/vmwgfx: Replace numeric parameter like 0444 with macro
        drm/etnaviv: block 64K of address space behind each cmdstream
        drm/etnaviv: ensure write caches are flushed at end of user cmdstream
        drm/armada: fix clock counts
      ec366cd1
    • Joao Pinto's avatar
      PCI: designware-plat: Update author email address · 02a1b8f4
      Joao Pinto authored
      Although I am leaving Synopsys, I would like to keep working with the linux
      kernel community and help in what you might find useful.  For that I am
      sending this patch to change my contact e-mail.
      Signed-off-by: default avatarJoao Pinto <jpinto@synopsys.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      02a1b8f4
    • Javier Martinez Canillas's avatar
      gpio: ts4800: Fix module autoload · 91f1551a
      Javier Martinez Canillas authored
      If the driver is built as a module, autoload won't work because the module
      alias information is not filled. So user-space can't match the registered
      device with the corresponding module.
      
      Export the module alias information using the MODULE_DEVICE_TABLE() macro.
      
      Before this patch:
      
      $ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
      $
      
      After this patch:
      
      $ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
      alias:          of:N*T*Ctechnologic,ts4800-gpioC*
      alias:          of:N*T*Ctechnologic,ts4800-gpio
      Signed-off-by: default avatarJavier Martinez Canillas <javier@osg.samsung.com>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      91f1551a