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  1. 30 Jun, 2017 2 commits
  3. 29 Jun, 2017 1 commit
    • Thomas Gleixner's avatar
      sched/numa: Hide numa_wake_affine() from UP build · ff801b71
      Thomas Gleixner authored 
      Stephen reported the following build warning in UP:

kernel/sched/fair.c:2657:9: warning: 'struct sched_domain' declared inside
parameter list
         ^
/home/sfr/next/next/kernel/sched/fair.c:2657:9: warning: its scope is only this
definition or declaration, which is probably not what you want

Hide the numa_wake_affine() inline stub on UP builds to get rid of it.

Fixes: 3fed382b ("sched/numa: Implement NUMA node level wake_affine()")
Reported-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
      ff801b71
  5. 24 Jun, 2017 13 commits
  7. 23 Jun, 2017 16 commits
  9. 22 Jun, 2017 8 commits
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · a38371cb
      Linus Torvalds authored 
      Pull cifs fixes from Steve French:
 "Various small fixes for stable"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix some return values in case of error in 'crypt_message'
  cifs: remove redundant return in cifs_creation_time_get
  CIFS: Improve readdir verbosity
  CIFS: check if pages is null rather than bv for a failed allocation
  CIFS: Set ->should_dirty in cifs_user_readv()
      a38371cb
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 3f7ba7e1
      Linus Torvalds authored 
      Pull KVM fixes from Radim Krčmář:
 "MIPS:
   - Fix build with KVM, DYNAMIC_DEBUG and JUMP_LABEL.

  PPC:
   - Fix host crashes/hangs on POWER9.
   - Properly restore userspace state after KVM_RUN ioctl.

  s390:
   - Fix address translation in odd-ball cases (real-space designation
     ASCEs).

  x86:
   - Fix privilege escalation in 64-bit Windows guests

  All patches are for stable and the x86 also has a CVE"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: fix singlestepping over syscall
  KVM: s390: gaccess: fix real-space designation asce handling for gmap shadows
  KVM: MIPS: Fix maybe-uninitialized build failure
  KVM: PPC: Book3S HV: Ignore timebase offset on POWER9 DD1
  KVM: PPC: Book3S HV: Save/restore host values of debug registers
  KVM: PPC: Book3S HV: Preserve userspace HTM state properly
  KVM: PPC: Book3S HV: Restore critical SPRs to host values on guest exit
  KVM: PPC: Book3S HV: Context-switch EBB registers properly
  KVM: PPC: Book3S HV: Cope with host using large decrementer mode
      3f7ba7e1
    • Linus Torvalds's avatar
      Merge tag 'mfd-fixes-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd · 4f92f0e2
      Linus Torvalds authored 
      Pull MFD fixes from Lee Jones:

 - arizona: use address passed in, rather than hard coded value

 - correct STM32 clock-names value in DT binding documentation

* tag 'mfd-fixes-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  dt-bindings: mfd: Update STM32 timers clock names
  mfd: arizona: Fix typo using hard-coded register
      4f92f0e2
    • Paolo Bonzini's avatar
      KVM: x86: fix singlestepping over syscall · c8401dda
      Paolo Bonzini authored 
      TF is handled a bit differently for syscall and sysret, compared
to the other instructions: TF is checked after the instruction completes,
so that the OS can disable #DB at a syscall by adding TF to FMASK.
When the sysret is executed the #DB is taken "as if" the syscall insn
just completed.

KVM emulates syscall so that it can trap 32-bit syscall on Intel processors.
Fix the behavior, otherwise you could get #DB on a user stack which is not
nice.  This does not affect Linux guests, as they use an IST or task gate
for #DB.

This fixes CVE-2017-7518.

Cc: stable@vger.kernel.org
Reported-by: default avatarAndy Lutomirski <luto@kernel.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
      c8401dda
    • Radim Krčmář's avatar
      Merge tag 'kvm-s390-master-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux · d6aa07c1
      Radim Krčmář authored 
      KVM: s390: fix shadow table handling for nested guests

Some odd-ball cases (real-space designation ASCEs) are handled wrong
for the shadow page tables. Fix it.
      d6aa07c1
    • Alistair Popple's avatar
      powerpc/powernv/npu-dma: Add explicit flush when sending an ATSD · bbd5ff50
      Alistair Popple authored 
      NPU2 requires an extra explicit flush to an active GPU PID when
sending address translation shoot downs (ATSDs) to reliably flush the
GPU TLB. This patch adds just such a flush at the end of each sequence
of ATSDs.

We can safely use PID 0 which is always reserved and active on the
GPU. PID 0 is only used for init_mm which will never be a user mm on
the GPU. To enforce this we add a check in pnv_npu2_init_context()
just in case someone tries to use PID 0 on the GPU.
Signed-off-by: default avatarAlistair Popple <alistair@popple.id.au>
[mpe: Use true/false for bool literals]
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      bbd5ff50
    • Heiko Carstens's avatar
      KVM: s390: gaccess: fix real-space designation asce handling for gmap shadows · addb63c1
      Heiko Carstens authored 
      For real-space designation asces the asce origin part is only a token.
The asce token origin must not be used to generate an effective
address for storage references. This however is erroneously done
within kvm_s390_shadow_tables().

Furthermore within the same function the wrong parts of virtual
addresses are used to generate a corresponding real address
(e.g. the region second index is used as region first index).

Both of the above can result in incorrect address translations. Only
for real space designations with a token origin of zero and addresses
below one megabyte the translation was correct.

Furthermore replace a "!asce.r" statement with a "!*fake" statement to
make it more obvious that a specific condition has nothing to do with
the architecture, but with the fake handling of real space designations.

Fixes: 3218f709 ("s390/mm: support real-space for gmap shadows")
Cc: David Hildenbrand <david@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
      addb63c1
    • Frederic Weisbecker's avatar
      sched/fair: Spare idle load balancing on nohz_full CPUs · 387bc8b5
      Frederic Weisbecker authored 
      Although idle load balancing obviously only concerns idle CPUs, it can
be a disturbance on a busy nohz_full CPU. Indeed a CPU can only get rid
of an idle load balancing duty once a tick fires while it runs a task
and this can take a while on a nohz_full CPU.

We could fix that and escape the idle load balancing duty from the very
idle exit path but that would bring unecessary overhead. Lets just not
bother and leave that job to housekeeping CPUs (those outside nohz_full
range). The nohz_full CPUs simply don't want any disturbance.
Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1497838322-10913-4-git-send-email-fweisbec@gmail.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      387bc8b5
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