From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LMdOl-0004G2-S0 for qemu-devel@nongnu.org; Tue, 13 Jan 2009 02:09:15 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LMdOj-0004Ep-0q for qemu-devel@nongnu.org; Tue, 13 Jan 2009 02:09:15 -0500 Received: from [199.232.76.173] (port=34542 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LMdOi-0004Ek-Q0 for qemu-devel@nongnu.org; Tue, 13 Jan 2009 02:09:12 -0500 Received: from hera.kernel.org ([140.211.167.34]:45651) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LMdOi-0005dB-9y for qemu-devel@nongnu.org; Tue, 13 Jan 2009 02:09:12 -0500 From: Amit Shah Date: Tue, 13 Jan 2009 07:09:05 +0000 Message-Id: <1231830545-1788-3-git-send-email-amit.shah@redhat.com> In-Reply-To: <1231830545-1788-2-git-send-email-amit.shah@redhat.com> References: <1231830545-1788-1-git-send-email-amit.shah@redhat.com> <1231830545-1788-2-git-send-email-amit.shah@redhat.com> Subject: [Qemu-devel] [PATCH] KVM: Fetch sub-leaf cpuid values for functions 4, 0xb, 0xd. Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Amit Shah , aliguori@us.ibm.com, avi@redhat.com, kvm@vger.kernel.org CPUID functions 4, 0xb and 0xd have sub-leaf values which depend on the input value of ECX. Store these values as well. Signed-off-by: Amit Shah --- qemu/target-i386/kvm.c | 34 ++++++++++++++++++++++++++-------- 1 files changed, 26 insertions(+), 8 deletions(-) diff --git a/qemu/target-i386/kvm.c b/qemu/target-i386/kvm.c index bef3150..c17e58b 100644 --- a/qemu/target-i386/kvm.c +++ b/qemu/target-i386/kvm.c @@ -39,7 +39,7 @@ int kvm_arch_init_vcpu(CPUState *env) struct kvm_cpuid cpuid; struct kvm_cpuid_entry entries[100]; } __attribute__((packed)) cpuid_data; - uint32_t limit, i, cpuid_i; + uint32_t limit, i, j, cpuid_i; uint32_t eax, ebx, ecx, edx; cpuid_i = 0; @@ -50,14 +50,32 @@ int kvm_arch_init_vcpu(CPUState *env) for (i = 0; i <= limit; i++) { struct kvm_cpuid_entry *c = &cpuid_data.entries[cpuid_i++]; - cpu_x86_cpuid(env, i, 0, &eax, &ebx, &ecx, &edx); - c->function = i; - c->eax = eax; - c->ebx = ebx; - c->ecx = ecx; - c->edx = edx; + if (i == 4 || i == 0xb || i == 0xd) { + for (j = 0; ; j++) { + cpu_x86_cpuid(env, i, j, &eax, &ebx, &ecx, &edx); + c->function = i; + c->eax = eax; + c->ebx = ebx; + c->ecx = ecx; + c->edx = edx; + c = &cpuid_data.entries[++cpuid_i]; + + if (i == 4 && eax == 0) + break; + if (i == 0xb && !(ecx & 0xff00)) + break; + if (i == 0xd && eax == 0) + break; + } + } else { + cpu_x86_cpuid(env, i, 0, &eax, &ebx, &ecx, &edx); + c->function = i; + c->eax = eax; + c->ebx = ebx; + c->ecx = ecx; + c->edx = edx; + } } - cpu_x86_cpuid(env, 0x80000000, 0, &eax, &ebx, &ecx, &edx); limit = eax; -- 1.6.0.6