leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
6368558c37
linux/arch/x86/kernel/fpu
History
Linus Torvalds 0a319ef75d 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.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl7VMZgRHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1jmAQ/7BJpyAHUjFJdChtkvUmLcBgI2qnxP7rc8
 Eh/tSo4PKh484Uqb4WY6XAHIAPBzEt3rHJG3fdaavzlUl98YJCdD9tstfwMPcCQ4
 L4c2Ru+h+mPQCMOZUctOphPjDzGWPzR4IhceH6gqhoS4vg9EqgN4o158x4jW6KFN
 Jlocp9CMfIaGSmaMlRrIUZ4Dj3mgboqqHsuCaibtaKAMK6LqZQDViTEal4mNbESX
 KQPOFpKrhoq6Jtzzer7fLPY2qb6kkLrL03X5IUGFP5UxigSejnfrI9SZpAuPP9S0
 kdN04Jo0T2aBIAikBTVhDWdLMJk19qeu7YXBrFEVbyhZHl1HdDqOhMdWPOp1GH9W
 CtGUalbIvz/5FbXuUImiiNh/bw2FxYjHsrDguW96IvMVFteucrFg9QyL+taYb1cV
 WqWdpIC0VoMuQxQI5FBWu4Bb/cLNV9VCxWAZjZQ806kwmyDxldsw5mucMGmH3+bO
 LD6bwRShSMRzI9bzcJSG+Z3y7Fe8b5IGNjCjzgPb88ezffBEFHzIEKdCL6QTNlRF
 6UgSGbRs41SqXwNw5tdQQNwPpDO73p+KVRGoEzyMJvojLKRGTcOHHUDriGZ30MNX
 3oHvLf5+dNrLC/frbOqUmQ7doBQOplR5VxlZVwwqkdpPw13Jf5zn4ewzriTOmKCq
 mEHMQmbkyi4=
 =M+BC
 -----END PGP SIGNATURE-----

Merge tag 'x86-fpu-2020-06-01' of git://git.kernel.org/pub/scm/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()
2020-06-01 14:09:26 -07:00
..
bugs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
core.c x86/fpu/xstate: Define new functions for clearing fpregs and xstates 2020-05-13 13:41:50 +02:00
init.c x86/fpu/xstate: Define new macros for supervisor and user xstates 2020-05-12 20:34:38 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
regset.c x86/fpu/xstate: Rename validate_xstate_header() to validate_user_xstate_header() 2020-05-12 20:20:32 +02:00
signal.c x86/fpu/xstate: Restore supervisor states for signal return 2020-05-16 12:20:50 +02:00
xstate.c Most of the changes here related to 'XSAVES supervisor state' support, 2020-06-01 14:09:26 -07:00