From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sheng Yang Subject: [PATCH] qemu: Enable XSAVE related CPUID Date: Thu, 27 May 2010 17:50:06 +0800 Message-ID: <1274953806-5316-1-git-send-email-sheng@linux.intel.com> Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org, Sheng Yang To: Avi Kivity , Marcelo Tosatti , Anthony Liguori Return-path: Received: from mga11.intel.com ([192.55.52.93]:42132 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751978Ab0E0JtS (ORCPT ); Thu, 27 May 2010 05:49:18 -0400 Sender: kvm-owner@vger.kernel.org List-ID: We can support it in KVM now. The initial values are the minimal requirement of XSAVE capable processor. Signed-off-by: Sheng Yang --- target-i386/cpuid.c | 32 ++++++++++++++++++++++++++++++++ 1 files changed, 32 insertions(+), 0 deletions(-) diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c index eebf038..cbf5595 100644 --- a/target-i386/cpuid.c +++ b/target-i386/cpuid.c @@ -1067,6 +1067,38 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, *ecx = 0; *edx = 0; break; + case 0xD: + /* Processor Extended State */ + if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) { + *eax = 0; + *ebx = 0; + *ecx = 0; + *edx = 0; + break; + } + if (count == 0) { + *eax = 0x7; /* FP | SSE | YMM */ + *ebx = 0x340; /* FP + SSE + YMM size */ + *ecx = 0x340; /* FP + SSE + YMM size */ + *edx = 0; + } else if (count == 1) { + /* eax = 1, so we can continue with others */ + *eax = 1; + *ebx = 0; + *ecx = 0; + *edx = 0; + } else if (count == 2) { + *eax = 0x100; /* YMM size */ + *ebx = 0x240; /* YMM offset */ + *ecx = 0; + *edx = 0; + } else { + *eax = 0; + *ebx = 0; + *ecx = 0; + *edx = 0; + } + break; case 0x80000000: *eax = env->cpuid_xlevel; *ebx = env->cpuid_vendor1; -- 1.7.0.1