Merge tag 'x86-fpu-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
authorLinus Torvalds <torvalds@linux-foundation.org>
Mon, 1 Jun 2020 21:09:26 +0000 (14:09 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 1 Jun 2020 21:09:26 +0000 (14:09 -0700)
commit0a319ef75d931de0b21882ec17d8d70ece0aa871
tree80e9a3a5effe197646a30b0a016b5788bb778d3e
parenteff5ddadab04dc7ae8c4588dd3eef2ecad770fd7
parent55e00fb66fd5048f4a3ee357018fd26fc527abca
Merge tag 'x86-fpu-2020-06-01' of git://git./linux/kernel/git/tip/tip

Pull x86 FPU updates from Ingo Molnar:
 "Most of the changes here related to 'XSAVES supervisor state' support,
  which is a feature that allows kernel-only data to be automatically
  saved/restored by the FPU context switching code.

  CPU features that can be supported this way are Intel PT, 'PASID' and
  CET features"

* tag 'x86-fpu-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu/xstate: Restore supervisor states for signal return
  x86/fpu/xstate: Preserve supervisor states for the slow path in __fpu__restore_sig()
  x86/fpu: Introduce copy_supervisor_to_kernel()
  x86/fpu/xstate: Update copy_kernel_to_xregs_err() for supervisor states
  x86/fpu/xstate: Update sanitize_restored_xstate() for supervisor xstates
  x86/fpu/xstate: Define new functions for clearing fpregs and xstates
  x86/fpu/xstate: Introduce XSAVES supervisor states
  x86/fpu/xstate: Separate user and supervisor xfeatures mask
  x86/fpu/xstate: Define new macros for supervisor and user xstates
  x86/fpu/xstate: Rename validate_xstate_header() to validate_user_xstate_header()
arch/x86/kernel/fpu/xstate.c
arch/x86/kernel/process.c