Commit-ID: 14cddfd5308b0880abd6e58b6660f5cc8e8020f9 Gitweb: http://git.kernel.org/tip/14cddfd5308b0880abd6e58b6660f5cc8e8020f9 Author: Yazen Ghannam <yazen.ghan...@amd.com> AuthorDate: Wed, 11 May 2016 14:58:27 +0200 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 12 May 2016 09:08:22 +0200
x86/mce: Update AMD mcheck init to use cpu_has() facilities Use cpu_has() facilities to find available RAS features rather than directly reading CPUID 0x80000007_EBX. Signed-off-by: Yazen Ghannam <yazen.ghan...@amd.com> [ Use the struct cpuinfo_x86 ptr instead. ] Signed-off-by: Borislav Petkov <b...@suse.de> Cc: Andy Lutomirski <l...@amacapital.net> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Tony Luck <tony.l...@intel.com> Cc: linux-edac <linux-e...@vger.kernel.org> Link: http://lkml.kernel.org/r/1462971509-3856-6-git-send-email...@alien8.de Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/kernel/cpu/mcheck/mce.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index aeda446..92e5e37 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1683,11 +1683,9 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) break; case X86_VENDOR_AMD: { - u32 ebx = cpuid_ebx(0x80000007); - - mce_flags.overflow_recov = !!(ebx & BIT(0)); - mce_flags.succor = !!(ebx & BIT(1)); - mce_flags.smca = !!(ebx & BIT(3)); + mce_flags.overflow_recov = !!cpu_has(c, X86_FEATURE_OVERFLOW_RECOV); + mce_flags.succor = !!cpu_has(c, X86_FEATURE_SUCCOR); + mce_flags.smca = !!cpu_has(c, X86_FEATURE_SMCA); /* * Install proper ops for Scalable MCA enabled processors
