Kan Liang 50f408d96d x86/fpu/xstate: Add helpers for LBR dynamic supervisor feature ... The perf subsystem will only need to save/restore the LBR state. However, the existing helpers save all supported supervisor states to a kernel buffer, which will be unnecessary. Two helpers are introduced to only save/restore requested dynamic supervisor states. The supervisor features in XFEATURE_MASK_SUPERVISOR_SUPPORTED and XFEATURE_MASK_SUPERVISOR_UNSUPPORTED mask cannot be saved/restored using these helpers. The helpers will be used in the following patch. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dave Hansen <dave.hansen@intel.com> Link: https://lkml.kernel.org/r/1593780569-62993-22-git-send-email-kan.liang@linux.intel.com		2020-07-08 11:38:56 +02:00
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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: Use proper mask to replace full instruction mask	2020-07-08 11:38:56 +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	x86/fpu/xstate: Add helpers for LBR dynamic supervisor feature	2020-07-08 11:38:56 +02:00