1. 02 Mar, 2018 1 commit
    • Michael Ellerman's avatar
      selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailable · cd4a6f3a
      Michael Ellerman authored
      The subpage_prot syscall is only functional when the system is using
      the Hash MMU. Since commit 5b2b8071 ("powerpc/mm: Invalidate
      subpage_prot() system call on radix platforms") it returns ENOENT when
      the Radix MMU is active. Currently this just makes the test fail.
      
      Additionally the syscall is not available if the kernel is built with
      4K pages, or if CONFIG_PPC_SUBPAGE_PROT=n, in which case it returns
      ENOSYS because the syscall is missing entirely.
      
      So check explicitly for ENOENT and ENOSYS and skip if we see either of
      those.
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      cd4a6f3a
  2. 28 Feb, 2018 2 commits
    • Michael Ellerman's avatar
      selftests/powerpc: Fix missing clean of pmu/lib.o · b7abbd5a
      Michael Ellerman authored
      The tm-resched-dscr test links against pmu/lib.o, but we don't have a
      rule to clean pmu/lib.o. This can lead to a build break if you build
      for big endian and then little, or vice versa.
      
      Fix it by making tm-resched-dscr depend on pmu/lib.c, causing the code
      to be built directly in, meaning no .o is generated.
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      b7abbd5a
    • Guenter Roeck's avatar
      powerpc/boot: Fix random libfdt related build errors · 64c3f648
      Guenter Roeck authored
      Once in a while I see build errors similar to the following
      when building images from a clean tree.
      
        Building powerpc:virtex-ml507:44x/virtex5_defconfig ... failed
        ------------
        Error log:
        arch/powerpc/boot/treeboot-akebono.c:37:20: fatal error:
        	libfdt.h: No such file or directory
      
        Building powerpc:bamboo:smpdev:44x/bamboo_defconfig ... failed
        ------------
        Error log:
        arch/powerpc/boot/treeboot-akebono.c:37:20: fatal error:
        	libfdt.h: No such file or directory
      
        arch/powerpc/boot/treeboot-currituck.c:35:20: fatal error:
             libfdt.h: No such file or directory
      
      Rebuilds will succeed.
      
      Turns out that several source files in arch/powerpc/boot/ include
      libfdt.h, but Makefile dependencies are incomplete. Let's fix that.
      Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      64c3f648
  3. 26 Feb, 2018 1 commit
  4. 23 Feb, 2018 3 commits
  5. 22 Feb, 2018 3 commits
    • Mark Lord's avatar
      powerpc/bpf/jit: Fix 32-bit JIT for seccomp_data access · 083b2090
      Mark Lord authored
      I am using SECCOMP to filter syscalls on a ppc32 platform, and noticed
      that the JIT compiler was failing on the BPF even though the
      interpreter was working fine.
      
      The issue was that the compiler was missing one of the instructions
      used by SECCOMP, so here is a patch to enable JIT for that
      instruction.
      
      Fixes: eb84bab0 ("ppc: Kconfig: Enable BPF JIT on ppc32")
      Signed-off-by: default avatarMark Lord <mlord@pobox.com>
      Acked-by: default avatarNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      083b2090
    • Michael Bringmann's avatar
      powerpc/pseries: Revert support for ibm,drc-info devtree property · c7a3275e
      Michael Bringmann authored
      This reverts commit 02ef6dd8.
      
      The earlier patch tried to enable support for a new property
      "ibm,drc-info" on powerpc systems.
      
      Unfortunately, some errors in the associated patch set break things
      in some of the DLPAR operations.  In particular when attempting to
      hot-add a new CPU or set of CPUs, the original patch failed to
      properly calculate the available resources, and aborted the operation.
      In addition, the original set missed several opportunities to compress
      and reuse common code.
      
      As the associated patch set was meant to provide an optimization of
      storage and performance of a set of device-tree properties for future
      systems with large amounts of resources, reverting just restores
      the previous behavior for existing systems.  It seems unnecessary
      to enable this feature and introduce the consequent problems in the
      field that it will cause at this time, so please revert it for now
      until testing of the corrections are finished properly.
      
      Fixes: 02ef6dd8 ("powerpc: Enable support for ibm,drc-info devtree property")
      Signed-off-by: default avatarMichael W. Bringmann <mwb@linux.vnet.ibm.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      c7a3275e
    • Michael Ellerman's avatar
      powerpc/pseries: Fix duplicate firmware feature for DRC_INFO · 5539d31a
      Michael Ellerman authored
      We had a mid-air collision between two new firmware features, DRMEM_V2
      and DRC_INFO, and they ended up with the same value.
      
      No one's actually reported any problems, presumably because the new
      firmware that supports both properties is not widely available, and
      the two properties tend to be enabled together.
      
      Still if we ever had one enabled but not the other, the bugs that
      could result are many and varied. So fix it.
      
      Fixes: 3f38000e ("powerpc/firmware: Add definitions for new drc-info firmware feature")
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Reviewed-by: default avatarTyrel Datwyler <tyreld@linux.vnet.ibm.com>
      5539d31a
  6. 21 Feb, 2018 2 commits
  7. 19 Feb, 2018 1 commit
  8. 18 Feb, 2018 4 commits
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0e06fb5b
      Linus Torvalds authored
      Pull x86 Kconfig fixes from Thomas Gleixner:
       "Three patchlets to correct HIGHMEM64G and CMPXCHG64 dependencies in
        Kconfig when CPU selections are explicitely set to M586 or M686"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/Kconfig: Explicitly enumerate i686-class CPUs in Kconfig
        x86/Kconfig: Exclude i586-class CPUs lacking PAE support from the HIGHMEM64G Kconfig group
        x86/Kconfig: Add missing i586-class CPUs to the X86_CMPXCHG64 Kconfig group
      0e06fb5b
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 9ca2c16f
      Linus Torvalds authored
      Pull perf updates from Thomas Gleixner:
       "Perf tool updates and kprobe fixes:
      
         - perf_mmap overwrite mode fixes/overhaul, prep work to get 'perf
           top' using it, making it bearable to use it in large core count
           systems such as Knights Landing/Mill Intel systems (Kan Liang)
      
         - s/390 now uses syscall.tbl, just like x86-64 to generate the
           syscall table id -> string tables used by 'perf trace' (Hendrik
           Brueckner)
      
         - Use strtoull() instead of home grown function (Andy Shevchenko)
      
         - Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar)
      
         - Document missing 'perf data --force' option (Sangwon Hong)
      
         - Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William
           Cohen)
      
         - Improve error handling and error propagation of ftrace based
           kprobes so failures when installing kprobes are not silently
           ignored and create disfunctional tracepoints"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
        kprobes: Propagate error from disarm_kprobe_ftrace()
        kprobes: Propagate error from arm_kprobe_ftrace()
        Revert "tools include s390: Grab a copy of arch/s390/include/uapi/asm/unistd.h"
        perf s390: Rework system call table creation by using syscall.tbl
        perf s390: Grab a copy of arch/s390/kernel/syscall/syscall.tbl
        tools/headers: Synchronize kernel ABI headers, v4.16-rc1
        perf test: Fix test trace+probe_libc_inet_pton.sh for s390x
        perf data: Document missing --force option
        perf tools: Substitute yet another strtoull()
        perf top: Check the latency of perf_top__mmap_read()
        perf top: Switch default mode to overwrite mode
        perf top: Remove lost events checking
        perf hists browser: Add parameter to disable lost event warning
        perf top: Add overwrite fall back
        perf evsel: Expose the perf_missing_features struct
        perf top: Check per-event overwrite term
        perf mmap: Discard legacy interface for mmap read
        perf test: Update mmap read functions for backward-ring-buffer test
        perf mmap: Introduce perf_mmap__read_event()
        perf mmap: Introduce perf_mmap__read_done()
        ...
      9ca2c16f
    • Linus Torvalds's avatar
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 2d6c4e40
      Linus Torvalds authored
      Pull irq updates from Thomas Gleixner:
       "A small set of updates mostly for irq chip drivers:
      
         - MIPS GIC fix for spurious, masked interrupts
      
         - fix for a subtle IPI bug in GICv3
      
         - do not probe GICv3 ITSs that are marked as disabled
      
         - multi-MSI support for GICv2m
      
         - various small cleanups"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        irqdomain: Re-use DEFINE_SHOW_ATTRIBUTE() macro
        irqchip/bcm: Remove hashed address printing
        irqchip/gic-v2m: Add PCI Multi-MSI support
        irqchip/gic-v3: Ignore disabled ITS nodes
        irqchip/gic-v3: Use wmb() instead of smb_wmb() in gic_raise_softirq()
        irqchip/gic-v3: Change pr_debug message to pr_devel
        irqchip/mips-gic: Avoid spuriously handling masked interrupts
      2d6c4e40
    • Linus Torvalds's avatar
      Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 59e47215
      Linus Torvalds authored
      Pull core fix from Thomas Gleixner:
       "A small fix which adds the missing for_each_cpu_wrap() stub for the UP
        case to avoid build failures"
      
      * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        cpumask: Make for_each_cpu_wrap() available on UP as well
      59e47215
  9. 17 Feb, 2018 11 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20180217' of git://git.kernel.dk/linux-block · c786427f
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request from Keith, with fixes all over the map for nvme.
         From various folks.
      
       - Classic polling fix, that avoids a latency issue where we still end
         up waiting for an interrupt in some cases. From Nitesh Shetty.
      
       - Comment typo fix from Minwoo Im.
      
      * tag 'for-linus-20180217' of git://git.kernel.dk/linux-block:
        block: fix a typo in comment of BLK_MQ_POLL_STATS_BKTS
        nvme-rdma: fix sysfs invoked reset_ctrl error flow
        nvmet: Change return code of discard command if not supported
        nvme-pci: Fix timeouts in connecting state
        nvme-pci: Remap CMB SQ entries on every controller reset
        nvme: fix the deadlock in nvme_update_formats
        blk: optimization for classic polling
        nvme: Don't use a stack buffer for keep-alive command
        nvme_fc: cleanup io completion
        nvme_fc: correct abort race condition on resets
        nvme: Fix discard buffer overrun
        nvme: delete NVME_CTRL_LIVE --> NVME_CTRL_CONNECTING transition
        nvme-rdma: use NVME_CTRL_CONNECTING state to mark init process
        nvme: rename NVME_CTRL_RECONNECTING state to NVME_CTRL_CONNECTING
      c786427f
    • Linus Torvalds's avatar
      Merge tag 'mmc-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc · fa2139ef
      Linus Torvalds authored
      Pull MMC fixes from Ulf Hansson:
      
       - meson-gx: Revert to earlier tuning process
      
       - bcm2835: Don't overwrite max frequency unconditionally
      
      * tag 'mmc-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
        mmc: bcm2835: Don't overwrite max frequency unconditionally
        Revert "mmc: meson-gx: include tx phase in the tuning process"
      fa2139ef
    • Linus Torvalds's avatar
      Merge tag 'mtd/fixes-for-4.16-rc2' of git://git.infradead.org/linux-mtd · 4b6415f9
      Linus Torvalds authored
      Pull mtd fixes from Boris Brezillon:
      
       - add missing dependency to NAND_MARVELL Kconfig entry
      
       - use the appropriate OOB layout in the VF610 driver
      
      * tag 'mtd/fixes-for-4.16-rc2' of git://git.infradead.org/linux-mtd:
        mtd: nand: MTD_NAND_MARVELL should depend on HAS_DMA
        mtd: nand: vf610: set correct ooblayout
      4b6415f9
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · ee78ad78
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "The main attraction is a fix for a bug in the new drmem code, which
        was causing an oops on boot on some versions of Qemu.
      
        There's also a fix for XIVE (Power9 interrupt controller) on KVM, as
        well as a few other minor fixes.
      
        Thanks to: Corentin Labbe, Cyril Bur, Cédric Le Goater, Daniel Black,
        Nathan Fontenot, Nicholas Piggin"
      
      * tag 'powerpc-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/pseries: Check for zero filled ibm,dynamic-memory property
        powerpc/pseries: Add empty update_numa_cpu_lookup_table() for NUMA=n
        powerpc/powernv: IMC fix out of bounds memory access at shutdown
        powerpc/xive: Use hw CPU ids when configuring the CPU queues
        powerpc: Expose TSCR via sysfs only on powernv
      ee78ad78
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · 74688a02
      Linus Torvalds authored
      Pull arm64 fixes from Catalin Marinas:
       "The bulk of this is the pte accessors annotation to READ/WRITE_ONCE
        (we tried to avoid pushing this during the merge window to avoid
        conflicts)
      
         - Updated the page table accessors to use READ/WRITE_ONCE and prevent
           compiler transformation that could lead to an apparent loss of
           coherency
      
         - Enabled branch predictor hardening for the Falkor CPU
      
         - Fix interaction between kpti enabling and KASan causing the
           recursive page table walking to take a significant time
      
         - Fix some sparse warnings"
      
      * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
        arm64: cputype: Silence Sparse warnings
        arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
        arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
        arm64: Add missing Falkor part number for branch predictor hardening
      74688a02
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.16a-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · f73f047d
      Linus Torvalds authored
      Pull xen fixes from Juergen Gross:
      
       - fixes for the Xen pvcalls frontend driver
      
       - fix for booting Xen pv domains
      
       - fix for the xenbus driver user interface
      
      * tag 'for-linus-4.16a-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        pvcalls-front: wait for other operations to return when release passive sockets
        pvcalls-front: introduce a per sock_mapping refcount
        x86/xen: Calculate __max_logical_packages on PV domains
        xenbus: track caller request id
      f73f047d
    • Stefano Stabellini's avatar
      pvcalls-front: wait for other operations to return when release passive sockets · d1a75e08
      Stefano Stabellini authored
      Passive sockets can have ongoing operations on them, specifically, we
      have two wait_event_interruptable calls in pvcalls_front_accept.
      
      Add two wake_up calls in pvcalls_front_release, then wait for the
      potential waiters to return and release the sock_mapping refcount.
      Signed-off-by: default avatarStefano Stabellini <stefano@aporeto.com>
      Acked-by: default avatarJuergen Gross <jgross@suse.com>
      Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
      d1a75e08
    • Stefano Stabellini's avatar
      pvcalls-front: introduce a per sock_mapping refcount · 64d68718
      Stefano Stabellini authored
      Introduce a per sock_mapping refcount, in addition to the existing
      global refcount. Thanks to the sock_mapping refcount, we can safely wait
      for it to be 1 in pvcalls_front_release before freeing an active socket,
      instead of waiting for the global refcount to be 1.
      Signed-off-by: default avatarStefano Stabellini <stefano@aporeto.com>
      Acked-by: default avatarJuergen Gross <jgross@suse.com>
      Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
      64d68718
    • Prarit Bhargava's avatar
      x86/xen: Calculate __max_logical_packages on PV domains · 63e708f8
      Prarit Bhargava authored
      The kernel panics on PV domains because native_smp_cpus_done() is
      only called for HVM domains.
      
      Calculate __max_logical_packages for PV domains.
      
      Fixes: b4c0a732 ("x86/smpboot: Fix __max_logical_packages estimate")
      Signed-off-by: default avatarPrarit Bhargava <prarit@redhat.com>
      Tested-and-reported-by: default avatarSimon Gaiser <simon@invisiblethingslab.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: x86@kernel.org
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
      Cc: xen-devel@lists.xenproject.org
      Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
      Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
      63e708f8
    • Joao Martins's avatar
      xenbus: track caller request id · 29fee6ee
      Joao Martins authored
      Commit fd8aa909 ("xen: optimize xenbus driver for multiple concurrent
      xenstore accesses") optimized xenbus concurrent accesses but in doing so
      broke UABI of /dev/xen/xenbus. Through /dev/xen/xenbus applications are in
      charge of xenbus message exchange with the correct header and body. Now,
      after the mentioned commit the replies received by application will no
      longer have the header req_id echoed back as it was on request (see
      specification below for reference), because that particular field is being
      overwritten by kernel.
      
      struct xsd_sockmsg
      {
        uint32_t type;  /* XS_??? */
        uint32_t req_id;/* Request identifier, echoed in daemon's response.  */
        uint32_t tx_id; /* Transaction id (0 if not related to a transaction). */
        uint32_t len;   /* Length of data following this. */
      
        /* Generally followed by nul-terminated string(s). */
      };
      
      Before there was only one request at a time so req_id could simply be
      forwarded back and forth. To allow simultaneous requests we need a
      different req_id for each message thus kernel keeps a monotonic increasing
      counter for this field and is written on every request irrespective of
      userspace value.
      
      Forwarding again the req_id on userspace requests is not a solution because
      we would open the possibility of userspace-generated req_id colliding with
      kernel ones. So this patch instead takes another route which is to
      artificially keep user req_id while keeping the xenbus logic as is. We do
      that by saving the original req_id before xs_send(), use the private kernel
      counter as req_id and then once reply comes and was validated, we restore
      back the original req_id.
      
      Cc: <stable@vger.kernel.org> # 4.11
      Fixes: fd8aa909 ("xen: optimize xenbus driver for multiple concurrent xenstore accesses")
      Reported-by: default avatarBhavesh Davda <bhavesh.davda@oracle.com>
      Signed-off-by: default avatarJoao Martins <joao.m.martins@oracle.com>
      Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
      Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
      29fee6ee
    • Robin Murphy's avatar
      arm64: cputype: Silence Sparse warnings · e1a50de3
      Robin Murphy authored
      Sparse makes a fair bit of noise about our MPIDR mask being implicitly
      long - let's explicitly describe it as such rather than just relying on
      the value forcing automatic promotion.
      Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
      Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      e1a50de3
  10. 16 Feb, 2018 12 commits
    • Linus Torvalds's avatar
      Merge tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping · 1e3510b2
      Linus Torvalds authored
      Pull dma-mapping fixes from Christoph Hellwig:
       "A few dma-mapping fixes for the fallout from the changes in rc1"
      
      * tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping:
        powerpc/macio: set a proper dma_coherent_mask
        dma-mapping: fix a comment typo
        dma-direct: comment the dma_direct_free calling convention
        dma-direct: mark as is_phys
        ia64: fix build failure with CONFIG_SWIOTLB
      1e3510b2
    • Will Deacon's avatar
      arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables · 20a004e7
      Will Deacon authored
      In many cases, page tables can be accessed concurrently by either another
      CPU (due to things like fast gup) or by the hardware page table walker
      itself, which may set access/dirty bits. In such cases, it is important
      to use READ_ONCE/WRITE_ONCE when accessing page table entries so that
      entries cannot be torn, merged or subject to apparent loss of coherence
      due to compiler transformations.
      
      Whilst there are some scenarios where this cannot happen (e.g. pinned
      kernel mappings for the linear region), the overhead of using READ_ONCE
      /WRITE_ONCE everywhere is minimal and makes the code an awful lot easier
      to reason about. This patch consistently uses these macros in the arch
      code, as well as explicitly namespacing pointers to page table entries
      from the entries themselves by using adopting a 'p' suffix for the former
      (as is sometimes used elsewhere in the kernel source).
      Tested-by: default avatarYury Norov <ynorov@caviumnetworks.com>
      Tested-by: default avatarRichard Ruigrok <rruigrok@codeaurora.org>
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
      20a004e7
    • Arnd Bergmann's avatar
      mm: hide a #warning for COMPILE_TEST · af27d940
      Arnd Bergmann authored
      We get a warning about some slow configurations in randconfig kernels:
      
        mm/memory.c:83:2: error: #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. [-Werror=cpp]
      
      The warning is reasonable by itself, but gets in the way of randconfig
      build testing, so I'm hiding it whenever CONFIG_COMPILE_TEST is set.
      
      The warning was added in 2013 in commit 75980e97 ("mm: fold
      page->_last_nid into page->flags where possible").
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      af27d940
    • Linus Torvalds's avatar
      Merge tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips · 78352f18
      Linus Torvalds authored
      Pull MIPS fixes from James Hogan:
       "A few fixes for outstanding MIPS issues:
      
         - an __init section mismatch warning when brcmstb_pm is enabled
      
         - a regression handling multiple mem=X@Y arguments (4.11)
      
         - a USB Kconfig select warning, and related sparc cleanup (4.16)"
      
      * tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
        sparc,leon: Select USB_UHCI_BIG_ENDIAN_{MMIO,DESC}
        usb: Move USB_UHCI_BIG_ENDIAN_* out of USB_SUPPORT
        MIPS: Fix incorrect mem=X@Y handling
        MIPS: BMIPS: Fix section mismatch warning
      78352f18
    • Linus Torvalds's avatar
      Merge tag 'for-4.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · da370f1d
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "We have a few assorted fixes, some of them show up during fstests so I
        gave them more testing"
      
      * tag 'for-4.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: Fix use-after-free when cleaning up fs_devs with a single stale device
        Btrfs: fix null pointer dereference when replacing missing device
        btrfs: remove spurious WARN_ON(ref->count < 0) in find_parent_nodes
        btrfs: Ignore errors from btrfs_qgroup_trace_extent_post
        Btrfs: fix unexpected -EEXIST when creating new inode
        Btrfs: fix use-after-free on root->orphan_block_rsv
        Btrfs: fix btrfs_evict_inode to handle abnormal inodes correctly
        Btrfs: fix extent state leak from tree log
        Btrfs: fix crash due to not cleaning up tree log block's dirty bits
        Btrfs: fix deadlock in run_delalloc_nocow
      da370f1d
    • Linus Torvalds's avatar
      Merge tag 'for-4.16/dm-chained-bios-fix' of... · c85b0b14
      Linus Torvalds authored
      Merge tag 'for-4.16/dm-chained-bios-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
      
      Pull device mapper fix from Mike Snitzer:
       "Fix for DM core to properly propagate errors (avoids overriding
        non-zero error with 0). This is particularly important given DM core's
        increased use of chained bios"
      
      * tag 'for-4.16/dm-chained-bios-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
        dm: correctly handle chained bios in dec_pending()
      c85b0b14
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.16-4' of git://git.infradead.org/linux-platform-drivers-x86 · 5e8639b7
      Linus Torvalds authored
      Pull x86 platform driver fixes from Andy Shevchenko:
      
       - regression fix in keyboard support for Dell laptops
      
       - prevent out-of-boundary write in WMI bus driver
      
       - increase timeout to read functional key status on Lenovo laptops
      
      * tag 'platform-drivers-x86-v4.16-4' of git://git.infradead.org/linux-platform-drivers-x86:
        platform/x86: dell-laptop: Removed duplicates in DMI whitelist
        platform/x86: dell-laptop: fix kbd_get_state's request value
        platform/x86: ideapad-laptop: Increase timeout to wait for EC answer
        platform/x86: wmi: fix off-by-one write in wmi_dev_probe()
      5e8639b7
    • Linus Torvalds's avatar
      Merge tag 'sound-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 1a2a7d3e
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "A collection of usual suspects:
      
         - a handful USB-audio and HD-audio device-specific quirks
      
         - some trivial fixes for the new AC97 bus stuff
      
         - another race fix in ALSA sequencer core"
      
      * tag 'sound-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda/realtek: PCI quirk for Fujitsu U7x7
        ALSA: seq: Fix racy pool initializations
        ALSA: usb: add more device quirks for USB DSD devices
        ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute
        ALSA: ac97: Fix copy and paste typo in documentation
        ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204
        ALSA: ac97: kconfig: Remove select of undefined symbol AC97
        ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform
        ALSA: hda/realtek - Add headset mode support for Dell laptop
        ALSA: hda - Fix headset mic detection problem for two Dell machines
      1a2a7d3e
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-v4.16-rc2' of git://people.freedesktop.org/~airlied/linux · bad57539
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "One nouveau regression fix, one AMD quirk and a full set of i915
        fixes.
      
        The i915 fixes are mostly for things caught by their CI system, main
        ones being DSI panel fixes and GEM fixes"
      
      * tag 'drm-fixes-for-v4.16-rc2' of git://people.freedesktop.org/~airlied/linux:
        drm/nouveau: Make clock gate support conditional
        drm/i915: Fix DSI panels with v1 MIPI sequences without a DEASSERT sequence v3
        drm/i915: Free memdup-ed DSI VBT data structures on driver_unload
        drm/i915: Add intel_bios_cleanup() function
        drm/i915/vlv: Add cdclk workaround for DSI
        drm/i915/gvt: fix one typo of render_mmio trace
        drm/i915/gvt: Support BAR0 8-byte reads/writes
        drm/i915/gvt: add 0xe4f0 into gen9 render list
        drm/i915/pmu: Fix building without CONFIG_PM
        drm/i915/pmu: Fix sleep under atomic in RC6 readout
        drm/i915/pmu: Fix PMU enable vs execlists tasklet race
        drm/i915: Lock out execlist tasklet while peeking inside for busy-stats
        drm/i915/breadcrumbs: Ignore unsubmitted signalers
        drm/i915: Don't wake the device up to check if the engine is asleep
        drm/i915: Avoid truncation before clamping userspace's priority value
        drm/i915/perf: Fix compiler warning for string truncation
        drm/i915/perf: Fix compiler warning for string truncation
        drm/amdgpu: add new device to use atpx quirk
      bad57539
    • NeilBrown's avatar
      dm: correctly handle chained bios in dec_pending() · 8dd601fa
      NeilBrown authored
      dec_pending() is given an error status (possibly 0) to be recorded
      against a bio.  It can be called several times on the one 'struct
      dm_io', and it is careful to only assign a non-zero error to
      io->status.  However when it then assigned io->status to bio->bi_status,
      it is not careful and could overwrite a genuine error status with 0.
      
      This can happen when chained bios are in use.  If a bio is chained
      beneath the bio that this dm_io is handling, the child bio might
      complete and set bio->bi_status before the dm_io completes.
      
      This has been possible since chained bios were introduced in 3.14, and
      has become a lot easier to trigger with commit 18a25da8 ("dm: ensure
      bio submission follows a depth-first tree walk") as that commit caused
      dm to start using chained bios itself.
      
      A particular failure mode is that if a bio spans an 'error' target and a
      working target, the 'error' fragment will complete instantly and set the
      ->bi_status, and the other fragment will normally complete a little
      later, and will clear ->bi_status.
      
      The fix is simply to only assign io_error to bio->bi_status when
      io_error is not zero.
      Reported-and-tested-by: default avatarMilan Broz <gmazyland@gmail.com>
      Cc: stable@vger.kernel.org (v3.14+)
      Signed-off-by: default avatarNeilBrown <neilb@suse.com>
      Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
      8dd601fa
    • Thomas Gleixner's avatar
      Merge tag 'irqchip-4.16-2' of... · 6dee6ae9
      Thomas Gleixner authored
      Merge tag 'irqchip-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
      
      Pull irqchip updates for 4.16-rc2 from Marc Zyngier
      
       - A MIPS GIC fix for spurious, masked interrupts
       - A fix for a subtle IPI bug in GICv3
       - Do not probe GICv3 ITSs that are marked as disabled
       - Multi-MSI support for GICv2m
       - Various cleanups
      6dee6ae9
    • Andy Shevchenko's avatar
      irqdomain: Re-use DEFINE_SHOW_ATTRIBUTE() macro · 0b24a0bb
      Andy Shevchenko authored
      ...instead of open coding file operations followed by custom ->open()
      callbacks per each attribute.
      Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
      Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      0b24a0bb