diff options
| author |   Eric Biggers <ebiggers@google.com> | 2017-09-24 12:59:13 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-09-26 09:43:48 +0200 |
| commit | 738f48cb5fdd5878d11934f1898aa2bcf1578289 (patch) | |
| tree | eaf5fcfed9da32dbbe4078fa869f05194c534a1c /arch | |
| parent | x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_user_to_xstate() (diff) | |
| download | linux-dev-738f48cb5fdd5878d11934f1898aa2bcf1578289.tar.xz linux-dev-738f48cb5fdd5878d11934f1898aa2bcf1578289.zip | |
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 <ebiggers@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Hao <haokexin@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Halcrow <mhalcrow@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: kernel-hardening@lists.openwall.com
Link: http://lkml.kernel.org/r/20170924105913.9157-11-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/fpu/regset.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c index b831d5b9de99..3ea151372389 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 |