tree ddde000d9e171f4cc86b4e49042774f4fa353427
parent 0898678c742ee913691d7f4a1606309825eee33b
parent 488e13a489e9707a7e81e1991fdd1f20c0f04689
author Linus Torvalds <torvalds@linux-foundation.org> 1621787560 -1000
committer Linus Torvalds <torvalds@linux-foundation.org> 1621787560 -1000
mergetag object 488e13a489e9707a7e81e1991fdd1f20c0f04689
 type commit
 tag perf-urgent-2021-05-23
 tagger Thomas Gleixner <tglx@linutronix.de> 1621776788 +0200
 
 Two perf fixes:
 
  - Do not check the LBR_TOS MSR when setting up unrelated LBR MSRs as this
    can cause malfunction when TOS is not supported.
 
  - Allocate the LBR XSAVE buffers along with the DS buffers upfront because
    allocating them when adding an event can deadlock.
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Merge tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "Two perf fixes:

   - Do not check the LBR_TOS MSR when setting up unrelated LBR MSRs as
     this can cause malfunction when TOS is not supported

   - Allocate the LBR XSAVE buffers along with the DS buffers upfront
     because allocating them when adding an event can deadlock"

* tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/lbr: Remove cpuc->lbr_xsave allocation from atomic context
  perf/x86: Avoid touching LBR_TOS MSR for Arch LBR