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Message-ID: <1283500988-32409-4-git-send-email-andre.przywara@amd.com> Date: Fri, 3 Sep 2010 10:03:07 +0200 From: Andre Przywara <andre.przywara@....com> To: <hpa@...or.com>, <tglx@...utronix.de>, <mingo@...e.hu> CC: <linux-kernel@...r.kernel.org>, Andre Przywara <andre.przywara@....com> Subject: [PATCH 3/4] x86: Fix allowed CPUID bits for KVM guests The AMD extension to AVX (FMA4, XOP) work on the same YMM register set as AVX, so they are safe for guests to use, as long as AVX itself is allowed. Signed-off-by: Andre Przywara <andre.przywara@....com> --- arch/x86/kvm/x86.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3a09c62..eb89e7b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1996,8 +1996,8 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, const u32 kvm_supported_word6_x86_features = F(LAHF_LM) | F(CMP_LEGACY) | F(SVM) | 0 /* ExtApicSpace */ | F(CR8_LEGACY) | F(ABM) | F(SSE4A) | F(MISALIGNSSE) | - F(3DNOWPREFETCH) | 0 /* OSVW */ | 0 /* IBS */ | F(SSE5) | - 0 /* SKINIT */ | 0 /* WDT */; + F(3DNOWPREFETCH) | 0 /* OSVW */ | 0 /* IBS */ | F(XOP) | + 0 /* SKINIT, WDT, LWP */ | F(FMA4) | F(TBM); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); -- 1.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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