1. 06 7月, 2018 13 次提交
    • W
      arm64: errata: Don't define type field twice for arm64_errata[] entries · 178909a6
      Will Deacon 提交于
      The ERRATA_MIDR_REV_RANGE macro assigns ARM64_CPUCAP_LOCAL_CPU_ERRATUM
      to the '.type' field of the 'struct arm64_cpu_capabilities', so there's
      no need to assign it explicitly as well.
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      178909a6
    • C
      arm64: Implement page table free interfaces · ec28bb9c
      Chintan Pandya 提交于
      arm64 requires break-before-make. Originally, before
      setting up new pmd/pud entry for huge mapping, in few
      cases, the modifying pmd/pud entry was still valid
      and pointing to next level page table as we only
      clear off leaf PTE in unmap leg.
      
       a) This was resulting into stale entry in TLBs (as few
          TLBs also cache intermediate mapping for performance
          reasons)
       b) Also, modifying pmd/pud was the only reference to
          next level page table and it was getting lost without
          freeing it. So, page leaks were happening.
      
      Implement pud_free_pmd_page() and pmd_free_pte_page() to
      enforce BBM and also free the leaking page tables.
      
      Implementation requires,
       1) Clearing off the current pud/pmd entry
       2) Invalidation of TLB
       3) Freeing of the un-used next level page tables
      Reviewed-by: NWill Deacon <will.deacon@arm.com>
      Signed-off-by: NChintan Pandya <cpandya@codeaurora.org>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      ec28bb9c
    • C
      arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable · 05f2d2f8
      Chintan Pandya 提交于
      Add an interface to invalidate intermediate page tables
      from TLB for kernel.
      Acked-by: NWill Deacon <will.deacon@arm.com>
      Signed-off-by: NChintan Pandya <cpandya@codeaurora.org>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      05f2d2f8
    • W
      Merge branch 'x86/mm' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip... · f3551520
      Will Deacon 提交于
      Merge branch 'x86/mm' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into aarch64/for-next/core
      
      Pull in core ioremap changes from -tip, since we depend on these for
      re-enabling huge I/O mappings on arm64.
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      f3551520
    • W
      arm64: insn: Don't fallback on nosync path for general insn patching · 693350a7
      Will Deacon 提交于
      Patching kernel instructions at runtime requires other CPUs to undergo
      a context synchronisation event via an explicit ISB or an IPI in order
      to ensure that the new instructions are visible. This is required even
      for "hotpatch" instructions such as NOP and BL, so avoid optimising in
      this case and always go via stop_machine() when performing general
      patching.
      
      ftrace isn't quite as strict, so it can continue to call the nosync
      code directly.
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      693350a7
    • W
      arm64: IPI each CPU after invalidating the I-cache for kernel mappings · 3b8c9f1c
      Will Deacon 提交于
      When invalidating the instruction cache for a kernel mapping via
      flush_icache_range(), it is also necessary to flush the pipeline for
      other CPUs so that instructions fetched into the pipeline before the
      I-cache invalidation are discarded. For example, if module 'foo' is
      unloaded and then module 'bar' is loaded into the same area of memory,
      a CPU could end up executing instructions from 'foo' when branching into
      'bar' if these instructions were fetched into the pipeline before 'foo'
      was unloaded.
      
      Whilst this is highly unlikely to occur in practice, particularly as
      any exception acts as a context-synchronizing operation, following the
      letter of the architecture requires us to execute an ISB on each CPU
      in order for the new instruction stream to be visible.
      Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      3b8c9f1c
    • M
      arm64: remove unused COMPAT_PSR definitions · 7373fed2
      Mark Rutland 提交于
      Now that users have been migrated to PSR_AA32, kill the unused
      COMPAT_PSR definitions.
      
      The only difference we need a definition for is COMPAT_PSR_DIT_BIT,
      which differs from PSR_AA32_DIT_BIT.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      7373fed2
    • M
      kvm/arm: use PSR_AA32 definitions · 256c0960
      Mark Rutland 提交于
      Some code cares about the SPSR_ELx format for exceptions taken from
      AArch32 to inspect or manipulate the SPSR_ELx value, which is already in
      the SPSR_ELx format, and not in the AArch32 PSR format.
      
      To separate these from cases where we care about the AArch32 PSR format,
      migrate these cases to use the PSR_AA32_* definitions rather than
      COMPAT_PSR_*.
      
      There should be no functional change as a result of this patch.
      
      Note that arm64 KVM does not support a compat KVM API, and always uses
      the SPSR_ELx format, even for AArch32 guests.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Acked-by: NChristoffer Dall <christoffer.dall@arm.com>
      Acked-by: NMarc Zyngier <marc.zyngier@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      256c0960
    • M
      arm64: use PSR_AA32 definitions · d64567f6
      Mark Rutland 提交于
      Some code cares about the SPSR_ELx format for exceptions taken from
      AArch32 to inspect or manipulate the SPSR_ELx value, which is already in
      the SPSR_ELx format, and not in the AArch32 PSR format.
      
      To separate these from cases where we care about the AArch32 PSR format,
      migrate these cases to use the PSR_AA32_* definitions rather than
      COMPAT_PSR_*.
      
      There should be no functional change as a result of this patch.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      d64567f6
    • M
      arm64: ptrace: map SPSR_ELx<->PSR for compat tasks · 76fc52bd
      Mark Rutland 提交于
      The SPSR_ELx format for exceptions taken from AArch32 is slightly
      different to the AArch32 PSR format.
      
      Map between the two in the compat ptrace code.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Fixes: 7206dc93 ("arm64: Expose Arm v8.4 features")
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Suzuki Poulose <suzuki.poulose@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      76fc52bd
    • M
      arm64: compat: map SPSR_ELx<->PSR for signals · 25dc2c80
      Mark Rutland 提交于
      The SPSR_ELx format for exceptions taken from AArch32 differs from the
      AArch32 PSR format. Thus, we must translate between the two when setting
      up a compat sigframe, or restoring context from a compat sigframe.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Fixes: 7206dc93 ("arm64: Expose Arm v8.4 features")
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Suzuki Poulose <suzuki.poulose@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      25dc2c80
    • M
      arm64: don't zero DIT on signal return · 12651321
      Mark Rutland 提交于
      Currently valid_user_regs() treats SPSR_ELx.DIT as a RES0 bit, causing
      it to be zeroed upon exception return, rather than preserved. Thus, code
      relying on DIT will not function as expected, and may expose an
      unexpected timing sidechannel.
      
      Let's remove DIT from the set of RES0 bits, such that it is preserved.
      At the same time, the related comment is updated to better describe the
      situation, and to take into account the most recent documentation of
      SPSR_ELx, in ARM DDI 0487C.a.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Fixes: 7206dc93 ("arm64: Expose Arm v8.4 features")
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      12651321
    • M
      arm64: add PSR_AA32_* definitions · 25086263
      Mark Rutland 提交于
      The AArch32 CPSR/SPSR format is *almost* identical to the AArch64
      SPSR_ELx format for exceptions taken from AArch32, but the two have
      diverged with the addition of DIT, and we need to treat the two as
      logically distinct.
      
      This patch adds new definitions for the SPSR_ELx format for exceptions
      taken from AArch32, with a consistent PSR_AA32_ prefix. The existing
      COMPAT_PSR_ definitions will be used for the PSR format as seen from
      AArch32.
      
      Definitions of DIT are provided for both, and inline functions are
      provided to map between the two formats. Note that for SPSR_ELx, the
      (RES0) J bit has been re-allocated as the DIT bit.
      
      Once users of the COMPAT_PSR definitions have been migrated over to the
      PSR_AA32 definitions, the (majority of) the former will be removed, so
      no efforts is made to avoid duplication until then.
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Christoffer Dall <christoffer.dall@arm.com>
      Cc: Marc Zyngier <marc.zyngier@arm.com>
      Cc: Suzuki Poulose <suzuki.poulose@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      25086263
  2. 05 7月, 2018 10 次提交
    • S
      arm64: Handle mismatched cache type · 314d53d2
      Suzuki K Poulose 提交于
      Track mismatches in the cache type register (CTR_EL0), other
      than the D/I min line sizes and trap user accesses if there are any.
      
      Fixes: be68a8aa ("arm64: cpufeature: Fix CTR_EL0 field definitions")
      Cc: <stable@vger.kernel.org>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      314d53d2
    • S
      arm64: Fix mismatched cache line size detection · 4c4a39dd
      Suzuki K Poulose 提交于
      If there is a mismatch in the I/D min line size, we must
      always use the system wide safe value both in applications
      and in the kernel, while performing cache operations. However,
      we have been checking more bits than just the min line sizes,
      which triggers false negatives. We may need to trap the user
      accesses in such cases, but not necessarily patch the kernel.
      
      This patch fixes the check to do the right thing as advertised.
      A new capability will be added to check mismatches in other
      fields and ensure we trap the CTR accesses.
      
      Fixes: be68a8aa ("arm64: cpufeature: Fix CTR_EL0 field definitions")
      Cc: <stable@vger.kernel.org>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Reported-by: NWill Deacon <will.deacon@arm.com>
      Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      4c4a39dd
    • W
      arm64: kconfig: Ensure spinlock fastpaths are inlined if !PREEMPT · 5d168964
      Will Deacon 提交于
      When running with CONFIG_PREEMPT=n, the spinlock fastpaths fit inside
      64 bytes, which typically coincides with the L1 I-cache line size.
      
      Inline the spinlock fastpaths, like we do already for rwlocks.
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      5d168964
    • W
      arm64: locking: Replace ticket lock implementation with qspinlock · c1109047
      Will Deacon 提交于
      It's fair to say that our ticket lock has served us well over time, but
      it's time to bite the bullet and start using the generic qspinlock code
      so we can make use of explicit MCS queuing and potentially better PV
      performance in future.
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      c1109047
    • W
      arm64: barrier: Implement smp_cond_load_relaxed · 598865c5
      Will Deacon 提交于
      We can provide an implementation of smp_cond_load_relaxed using READ_ONCE
      and __cmpwait_relaxed.
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      598865c5
    • T
      x86/mm: Add TLB purge to free pmd/pte page interfaces · 5e0fb5df
      Toshi Kani 提交于
      ioremap() calls pud_free_pmd_page() / pmd_free_pte_page() when it creates
      a pud / pmd map.  The following preconditions are met at their entry.
       - All pte entries for a target pud/pmd address range have been cleared.
       - System-wide TLB purges have been peformed for a target pud/pmd address
         range.
      
      The preconditions assure that there is no stale TLB entry for the range.
      Speculation may not cache TLB entries since it requires all levels of page
      entries, including ptes, to have P & A-bits set for an associated address.
      However, speculation may cache pud/pmd entries (paging-structure caches)
      when they have P-bit set.
      
      Add a system-wide TLB purge (INVLPG) to a single page after clearing
      pud/pmd entry's P-bit.
      
      SDM 4.10.4.1, Operation that Invalidate TLBs and Paging-Structure Caches,
      states that:
        INVLPG invalidates all paging-structure caches associated with the
        current PCID regardless of the liner addresses to which they correspond.
      
      Fixes: 28ee90fe ("x86/mm: implement free pmd/pte page interfaces")
      Signed-off-by: NToshi Kani <toshi.kani@hpe.com>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Cc: mhocko@suse.com
      Cc: akpm@linux-foundation.org
      Cc: hpa@zytor.com
      Cc: cpandya@codeaurora.org
      Cc: linux-mm@kvack.org
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: Joerg Roedel <joro@8bytes.org>
      Cc: stable@vger.kernel.org
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: <stable@vger.kernel.org>
      Link: https://lkml.kernel.org/r/20180627141348.21777-4-toshi.kani@hpe.com
      5e0fb5df
    • C
      ioremap: Update pgtable free interfaces with addr · 785a19f9
      Chintan Pandya 提交于
      The following kernel panic was observed on ARM64 platform due to a stale
      TLB entry.
      
       1. ioremap with 4K size, a valid pte page table is set.
       2. iounmap it, its pte entry is set to 0.
       3. ioremap the same address with 2M size, update its pmd entry with
          a new value.
       4. CPU may hit an exception because the old pmd entry is still in TLB,
          which leads to a kernel panic.
      
      Commit b6bdb751 ("mm/vmalloc: add interfaces to free unmapped page
      table") has addressed this panic by falling to pte mappings in the above
      case on ARM64.
      
      To support pmd mappings in all cases, TLB purge needs to be performed
      in this case on ARM64.
      
      Add a new arg, 'addr', to pud_free_pmd_page() and pmd_free_pte_page()
      so that TLB purge can be added later in seprate patches.
      
      [toshi.kani@hpe.com: merge changes, rewrite patch description]
      Fixes: 28ee90fe ("x86/mm: implement free pmd/pte page interfaces")
      Signed-off-by: NChintan Pandya <cpandya@codeaurora.org>
      Signed-off-by: NToshi Kani <toshi.kani@hpe.com>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Cc: mhocko@suse.com
      Cc: akpm@linux-foundation.org
      Cc: hpa@zytor.com
      Cc: linux-mm@kvack.org
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Joerg Roedel <joro@8bytes.org>
      Cc: stable@vger.kernel.org
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: <stable@vger.kernel.org>
      Link: https://lkml.kernel.org/r/20180627141348.21777-3-toshi.kani@hpe.com
      785a19f9
    • T
      x86/mm: Disable ioremap free page handling on x86-PAE · f967db0b
      Toshi Kani 提交于
      ioremap() supports pmd mappings on x86-PAE.  However, kernel's pmd
      tables are not shared among processes on x86-PAE.  Therefore, any
      update to sync'd pmd entries need re-syncing.  Freeing a pte page
      also leads to a vmalloc fault and hits the BUG_ON in vmalloc_sync_one().
      
      Disable free page handling on x86-PAE.  pud_free_pmd_page() and
      pmd_free_pte_page() simply return 0 if a given pud/pmd entry is present.
      This assures that ioremap() does not update sync'd pmd entries at the
      cost of falling back to pte mappings.
      
      Fixes: 28ee90fe ("x86/mm: implement free pmd/pte page interfaces")
      Reported-by: NJoerg Roedel <joro@8bytes.org>
      Signed-off-by: NToshi Kani <toshi.kani@hpe.com>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Cc: mhocko@suse.com
      Cc: akpm@linux-foundation.org
      Cc: hpa@zytor.com
      Cc: cpandya@codeaurora.org
      Cc: linux-mm@kvack.org
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: stable@vger.kernel.org
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: <stable@vger.kernel.org>
      Link: https://lkml.kernel.org/r/20180627141348.21777-2-toshi.kani@hpe.com
      f967db0b
    • M
      arm64: kexec: always reset to EL2 if present · 76f4e2da
      Mark Rutland 提交于
      Currently machine_kexec() doesn't reset to EL2 in the case of a
      crashdump kernel. This leaves potentially dodgy state active at EL2, and
      means that if the crashdump kernel attempts to online secondary CPUs,
      these will be booted as mismatched ELs.
      
      Let's reset to EL2, as we do in all other cases, and simplify things. If
      EL2 state is corrupt, things are already sufficiently bad that kdump is
      unlikely to work, and it's best-effort regardless.
      
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: James Morse <james.morse@arm.com>
      Acked-by: NMarc Zyngier <marc.zyngier@arm.com>
      Signed-off-by: NMark Rutland <mark.rutland@arm.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      76f4e2da
    • M
      arm64: fix infinite stacktrace · 7e7df71f
      Mikulas Patocka 提交于
      I've got this infinite stacktrace when debugging another problem:
      [  908.795225] INFO: rcu_preempt detected stalls on CPUs/tasks:
      [  908.796176]  1-...!: (1 GPs behind) idle=952/1/4611686018427387904 softirq=1462/1462 fqs=355
      [  908.797692]  2-...!: (1 GPs behind) idle=f42/1/4611686018427387904 softirq=1550/1551 fqs=355
      [  908.799189]  (detected by 0, t=2109 jiffies, g=130, c=129, q=235)
      [  908.800284] Task dump for CPU 1:
      [  908.800871] kworker/1:1     R  running task        0    32      2 0x00000022
      [  908.802127] Workqueue: writecache-writeabck writecache_writeback [dm_writecache]
      [  908.820285] Call trace:
      [  908.824785]  __switch_to+0x68/0x90
      [  908.837661]  0xfffffe00603afd90
      [  908.844119]  0xfffffe00603afd90
      [  908.850091]  0xfffffe00603afd90
      [  908.854285]  0xfffffe00603afd90
      [  908.863538]  0xfffffe00603afd90
      [  908.865523]  0xfffffe00603afd90
      
      The machine just locked up and kept on printing the same line over and
      over again. This patch fixes it.
      Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      7e7df71f
  3. 02 7月, 2018 8 次提交
    • P
      ARM64: dump: Convert to use DEFINE_SHOW_ATTRIBUTE macro · 90aff8d0
      Peng Donglin 提交于
      Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
      Signed-off-by: NPeng Donglin <dolinux.peng@gmail.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      90aff8d0
    • L
      Linux 4.18-rc3 · 021c9179
      Linus Torvalds 提交于
      021c9179
    • L
      Merge tag 'for-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · d3bc0e67
      Linus Torvalds 提交于
      Pull btrfs fixes from David Sterba:
       "We have a few regression fixes for qgroup rescan status tracking and
        the vm_fault_t conversion that mixed up the error values"
      
      * tag 'for-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        Btrfs: fix mount failure when qgroup rescan is in progress
        Btrfs: fix regression in btrfs_page_mkwrite() from vm_fault_t conversion
        btrfs: quota: Set rescan progress to (u64)-1 if we hit last leaf
      d3bc0e67
    • L
      Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 4a770e63
      Linus Torvalds 提交于
      Pull vfs fix from Al Viro:
       "Followup to procfs-seq_file series this window"
      
      This fixes a memory leak by making sure that proc seq files release any
      private data on close.  The 'proc_seq_open' has to be properly paired
      with 'proc_seq_release' that releases the extra private data.
      
      * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        proc: add proc_seq_release
      4a770e63
    • L
      Merge tag 'staging-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · d7563ca5
      Linus Torvalds 提交于
      Pull staging/IIO fixes from Greg KH:
       "Here are a few small staging and IIO driver fixes for 4.18-rc3.
      
        Nothing major or big, all just fixes for reported problems since
        4.18-rc1. All of these have been in linux-next this week with no
        reported problems"
      
      * tag 'staging-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: android: ion: Return an ERR_PTR in ion_map_kernel
        staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write()
        iio: imu: inv_mpu6050: Fix probe() failure on older ACPI based machines
        iio: buffer: fix the function signature to match implementation
        iio: mma8452: Fix ignoring MMA8452_INT_DRDY
        iio: tsl2x7x/tsl2772: avoid potential division by zero
        iio: pressure: bmp280: fix relative humidity unit
      d7563ca5
    • L
      Merge tag 'tty-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · 652788a9
      Linus Torvalds 提交于
      Pull tty/serial fixes from Greg KH:
       "Here are five fixes for the tty core and some serial drivers.
      
        The tty core ones fix some security and other issues reported by the
        syzbot that I have taken too long in responding to (sorry Tetsuo!).
      
        The 8350 serial driver fix resolves an issue of devices that used to
        work properly stopping working as they shouldn't have been added to a
        blacklist.
      
        All of these have been in linux-next for a few days with no reported
        issues"
      
      * tag 'tty-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        vt: prevent leaking uninitialized data to userspace via /dev/vcs*
        serdev: fix memleak on module unload
        serial: 8250_pci: Remove stalled entries in blacklist
        n_tty: Access echo_* variables carefully.
        n_tty: Fix stall at n_tty_receive_char_special().
      652788a9
    • L
      Merge tag 'usb-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · c2aee376
      Linus Torvalds 提交于
      Pull USB fixes from Greg KH:
       "Here is a number of USB gadget and other driver fixes for 4.18-rc3.
      
        There's a bunch of them here, most of them being gadget driver and
        xhci host controller fixes for reported issues (as normal), but there
        are also some new device ids, and some fixes for the typec code.
      
        There is an acpi core patch in here that was acked by the acpi
        maintainer as it is needed for the typec fixes in order to properly
        solve a problem in that driver.
      
        All of these have been in linux-next this week with no reported
        issues"
      
      * tag 'usb-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
        usb: chipidea: host: fix disconnection detect issue
        usb: typec: tcpm: fix logbuffer index is wrong if _tcpm_log is re-entered
        typec: tcpm: Fix a msecs vs jiffies bug
        NFC: pn533: Fix wrong GFP flag usage
        usb: cdc_acm: Add quirk for Uniden UBC125 scanner
        staging/typec: fix tcpci_rt1711h build errors
        usb: typec: ucsi: Fix for incorrect status data issue
        usb: typec: ucsi: acpi: Workaround for cache mode issue
        acpi: Add helper for deactivating memory region
        usb: xhci: increase CRS timeout value
        usb: xhci: tegra: fix runtime PM error handling
        usb: xhci: remove the code build warning
        xhci: Fix kernel oops in trace_xhci_free_virt_device
        xhci: Fix perceived dead host due to runtime suspend race with event handler
        dwc2: gadget: Fix ISOC IN DDMA PID bitfield value calculation
        usb: gadget: dwc2: fix memory leak in gadget_init()
        usb: gadget: composite: fix delayed_status race condition when set_interface
        usb: dwc2: fix isoc split in transfer with no data
        usb: dwc2: alloc dma aligned buffer for isoc split in
        usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub
        ...
      c2aee376
    • L
      Merge tag 'dma-mapping-4.18-2' of git://git.infradead.org/users/hch/dma-mapping · c350d6d1
      Linus Torvalds 提交于
      Pull dma mapping fixlet from Christoph Hellwig:
       "Add a missing export required by riscv and unicore"
      
      * tag 'dma-mapping-4.18-2' of git://git.infradead.org/users/hch/dma-mapping:
        swiotlb: export swiotlb_dma_ops
      c350d6d1
  4. 01 7月, 2018 7 次提交
    • L
      Merge branch 'parisc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux · 883c9ab9
      Linus Torvalds 提交于
      Pull parisc fixes and cleanups from Helge Deller:
       "Nothing exiting in this patchset, just
      
         - small cleanups of header files
      
         - default to 4 CPUs when building a SMP kernel
      
         - mark 16kB and 64kB page sizes broken
      
         - addition of the new io_pgetevents syscall"
      
      * 'parisc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
        parisc: Build kernel without -ffunction-sections
        parisc: Reduce debug output in unwind code
        parisc: Wire up io_pgetevents syscall
        parisc: Default to 4 SMP CPUs
        parisc: Convert printk(KERN_LEVEL) to pr_lvl()
        parisc: Mark 16kB and 64kB page sizes BROKEN
        parisc: Drop struct sigaction from not exported header file
      883c9ab9
    • L
      Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 08af78d7
      Linus Torvalds 提交于
      Pull ARM SoC fixes from Olof Johansson:
       "A smaller batch for the end of the week (let's see if I can keep the
        weekly cadence going for once).
      
        All medium-grade fixes here, nothing worrisome:
      
         - Fixes for some fairly old bugs around SD card write-protect
           detection and GPIO interrupt assignments on Davinci.
      
         - Wifi module suspend fix for Hikey.
      
         - Minor DT tweaks to fix inaccuracies for Amlogic platforms, one
           of which solves booting with third-party u-boot"
      
      * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        arm64: dts: hikey960: Define wl1837 power capabilities
        arm64: dts: hikey: Define wl1835 power capabilities
        ARM64: dts: meson-gxl: fix Mali GPU compatible string
        ARM64: dts: meson-axg: fix ethernet stability issue
        ARM64: dts: meson-gx: fix ATF reserved memory region
        ARM64: dts: meson-gxl-s905x-p212: Add phy-supply for usb0
        ARM64: dts: meson: fix register ranges for SD/eMMC
        ARM64: dts: meson: disable sd-uhs modes on the libretech-cc
        ARM: dts: da850: Fix interrups property for gpio
        ARM: davinci: board-da850-evm: fix WP pin polarity for MMC/SD
      08af78d7
    • L
      Merge tag 'kbuild-fixes-v4.18' of... · 22d3e0c3
      Linus Torvalds 提交于
      Merge tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - introduce __diag_* macros and suppress -Wattribute-alias warnings
         from GCC 8
      
       - fix stack protector test script for x86_64
      
       - fix line number handling in Kconfig
      
       - document that '#' starts a comment in Kconfig
      
       - handle P_SYMBOL property in dump debugging of Kconfig
      
       - correct help message of LD_DEAD_CODE_DATA_ELIMINATION
      
       - fix occasional segmentation faults in Kconfig
      
      * tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kconfig: loop boundary condition fix
        kbuild: reword help of LD_DEAD_CODE_DATA_ELIMINATION
        kconfig: handle P_SYMBOL in print_symbol()
        kconfig: document Kconfig source file comments
        kconfig: fix line numbers for if-entries in menu tree
        stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
        powerpc: Remove -Wattribute-alias pragmas
        disable -Wattribute-alias warning for SYSCALL_DEFINEx()
        kbuild: add macro for controlling warnings to linux/compiler.h
      22d3e0c3
    • L
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0fbc4aea
      Linus Torvalds 提交于
      Pull x86 fixes from Ingo Molnar:
       "The biggest diffstat comes from self-test updates, plus there's entry
        code fixes, 5-level paging related fixes, console debug output fixes,
        and misc fixes"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/mm: Clean up the printk()s in show_fault_oops()
        x86/mm: Drop unneeded __always_inline for p4d page table helpers
        x86/efi: Fix efi_call_phys_epilog() with CONFIG_X86_5LEVEL=y
        selftests/x86/sigreturn: Do minor cleanups
        selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
        x86/entry/64/compat: Fix "x86/entry/64/compat: Preserve r8-r11 in int $0x80"
        x86/mm: Don't free P4D table when it is folded at runtime
        x86/entry/32: Add explicit 'l' instruction suffix
        x86/mm: Get rid of KERN_CONT in show_fault_oops()
      0fbc4aea
    • L
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · d7d53886
      Linus Torvalds 提交于
      Pull perf fixes from Ingo Molnar:
       "Tooling fixes mostly, plus a build warning fix"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
        perf/core: Move inline keyword at the beginning of declaration
        tools/headers: Pick up latest kernel ABIs
        perf tools: Fix crash caused by accessing feat_ops[HEADER_LAST_FEATURE]
        perf script: Fix crash because of missing evsel->priv
        perf script: Add missing output fields in a hint
        perf bench: Fix numa report output code
        perf stat: Remove duplicate event counting
        perf alias: Rebuild alias expression string to make it comparable
        perf alias: Remove trailing newline when reading sysfs files
        perf tools: Fix a clang 7.0 compilation error
        tools include uapi: Synchronize bpf.h with the kernel
        tools include uapi: Update if_link.h to pick IFLA_{BRPORT_ISOLATED,VXLAN_TTL_INHERIT}
        tools include powerpc: Update arch/powerpc/include/uapi/asm/unistd.h copy to get 'rseq' syscall
        perf tools: Update x86's syscall_64.tbl, adding 'io_pgetevents' and 'rseq'
        tools headers uapi: Synchronize drm/drm.h
        perf intel-pt: Fix packet decoding of CYC packets
        perf tests: Add valid callback for parse-events test
        perf tests: Add event parsing error handling to parse events test
        perf report powerpc: Fix crash if callchain is empty
        perf test session topology: Fix test on s390
        ...
      d7d53886
    • L
      Merge tag 'selinux-pr-20180629' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux · 34a484d5
      Linus Torvalds 提交于
      Pull selinux fix from Paul Moore:
       "One fairly straightforward patch to fix a longstanding issue where a
        process could stall while accessing files in selinuxfs and block
        everyone else due to a held mutex.
      
        The patch passes all our tests and looks to apply cleanly to your
        current tree"
      
      * tag 'selinux-pr-20180629' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
        selinux: move user accesses in selinuxfs out of locked regions
      34a484d5
    • L
      Merge tag 'for-linus-20180629' of git://git.kernel.dk/linux-block · e6e5bec4
      Linus Torvalds 提交于
      Pull block fixes from Jens Axboe:
       "Small set of fixes for this series. Mostly just minor fixes, the only
        oddball in here is the sg change.
      
        The sg change came out of the stall fix for NVMe, where we added a
        mempool and limited us to a single page allocation. CONFIG_SG_DEBUG
        sort-of ruins that, since we'd need to account for that. That's
        actually a generic problem, since lots of drivers need to allocate SG
        lists. So this just removes support for CONFIG_SG_DEBUG, which I added
        back in 2007 and to my knowledge it was never useful.
      
        Anyway, outside of that, this pull contains:
      
         - clone of request with special payload fix (Bart)
      
         - drbd discard handling fix (Bart)
      
         - SATA blk-mq stall fix (me)
      
         - chunk size fix (Keith)
      
         - double free nvme rdma fix (Sagi)"
      
      * tag 'for-linus-20180629' of git://git.kernel.dk/linux-block:
        sg: remove ->sg_magic member
        drbd: Fix drbd_request_prepare() discard handling
        blk-mq: don't queue more if we get a busy return
        block: Fix cloning of requests with a special payload
        nvme-rdma: fix possible double free of controller async event buffer
        block: Fix transfer when chunk sectors exceeds max
      e6e5bec4
  5. 30 6月, 2018 2 次提交