Commit-ID:  738f48cb5fdd5878d11934f1898aa2bcf1578289
Gitweb:     http://git.kernel.org/tip/738f48cb5fdd5878d11934f1898aa2bcf1578289
Author:     Eric Biggers <[email protected]>
AuthorDate: Sun, 24 Sep 2017 12:59:13 +0200
Committer:  Ingo Molnar <[email protected]>
CommitDate: Tue, 26 Sep 2017 09:43:48 +0200

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

This is the canonical method to use.

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]>
---
 arch/x86/kernel/fpu/regset.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c
index b831d5b..3ea1513 100644
--- a/arch/x86/kernel/fpu/regset.c
+++ b/arch/x86/kernel/fpu/regset.c
@@ -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

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