tree 030efd9b19604201a4a42e10dd44357e5c2de1bd
parent 0785249f8b93836986e9d1bdeefd2a2c13f160af
parent e6f8b6c12f03818baacc5f504fe83fa5e20771d6
author Linus Torvalds <torvalds@linux-foundation.org> 1586711836 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1586711836 -0700
mergetag object e6f8b6c12f03818baacc5f504fe83fa5e20771d6
 type commit
 tag x86-urgent-2020-04-12
 tagger Thomas Gleixner <tglx@linutronix.de> 1586697939 +0200
 
 A set of three patches to fix the fallout of the newly added split lock
 detection feature.
 
 It addressed the case where a KVM guest triggers a split lock #AC and KVM
 reinjects it into the guest which is not prepared to handle it.
 
 Adds proper sanity checks which prevent the unconditional injection into
 the guest and handles the #AC on the host side in the same way as user
 space detections are handled. Depending on the detection mode it either
 warns and disables detection for the task or kills the task if the mode is
 set to fatal.
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Merge tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A set of three patches to fix the fallout of the newly added split
  lock detection feature.

  It addressed the case where a KVM guest triggers a split lock #AC and
  KVM reinjects it into the guest which is not prepared to handle it.

  Add proper sanity checks which prevent the unconditional injection
  into the guest and handles the #AC on the host side in the same way as
  user space detections are handled. Depending on the detection mode it
  either warns and disables detection for the task or kills the task if
  the mode is set to fatal"

* tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest
  KVM: x86: Emulate split-lock access as a write in emulator
  x86/split_lock: Provide handle_guest_split_lock()