diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-05-22 11:58:45 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-22 11:58:45 +0300 |
| commit | b54b4bbbf5e9313acc681129ab332e33a397cd13 (patch) | |
| tree | bc104fa7e0e21fb03b76953ee2b4aaab593f02cc /arch/x86/kvm/vmx.c | |
| parent | 6f56a8d024757e2f3bda8bf3bdf6aa1a21e6810b (diff) | |
| download | linux-b54b4bbbf5e9313acc681129ab332e33a397cd13.tar.xz | |
x86/fpu, crypto: Fix AVX2 feature tests
For some CPU models I broke the AVX2 feature detection in:
7bc371faa9cd ("x86/fpu, crypto x86/camellia_aesni_avx2: Simplify the camellia_aesni_init() xfeature checks")
534ff06e3929 ("x86/fpu, crypto x86/serpent_avx2: Simplify the init() xfeature checks")
... because I did not realize that it's possible for a CPU to support
the xstate necessary for AVX2 execution (XSTATE_YMM), but not have
the AVX2 instructions themselves.
Restore the necessary CPUID checks as well.
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
0 files changed, 0 insertions, 0 deletions