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x86/fpu: Use using_compacted_format() instead of open coded X86_FEATURE_XSAVES

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Signed-off-by: Eric Biggers <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Eric Biggers <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Kevin Hao <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Michael Halcrow <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Wanpeng Li <[email protected]>
Cc: Yu-cheng Yu <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Eric Biggers 2017-09-24 12:59:13 +02:00 • committed by Ingo Molnar
commit 738f48cb5f
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/fpu/regset.c
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@ -134,7 +134,7 @@ int xstateregs_set(struct task_struct *target, const struct user_regset *regset,
fpu__prepare_write(fpu);
if (boot_cpu_has(X86_FEATURE_XSAVES)) {
if (using_compacted_format()) {
if (kbuf)
ret = copy_kernel_to_xstate(xsave, kbuf);
else