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From d037664335efca55df79abcde79f4f2733ca535b Mon Sep 17 00:00:00 2001
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From: Eduardo Habkost <ehabkost@redhat.com>
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Date: Thu, 23 Feb 2017 14:29:42 +0100
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Subject: [PATCH 12/17] target-i386: Filter KVM and 0xC0000001 features on TCG
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Eduardo Habkost <ehabkost@redhat.com>
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Message-id: <20170223142945.17790-12-ehabkost@redhat.com>
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Patchwork-id: 74040
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O-Subject: [RHEL-7.4 qemu-kvm PATCH v2 11/14] target-i386: Filter KVM and 0xC0000001 features on TCG
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Bugzilla: 1382122
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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TCG doesn't support any of the feature flags on FEAT_KVM and
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FEAT_C000_0001_EDX feature words, so clear all bits on those feature
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words.
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Reviewed-by: Richard Henderson <rth@twiddle.net>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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(cherry picked from commit 84a6c6cd40687598c7e85d7de8095e08b5e636d7)
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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target-i386/cpu.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/target-i386/cpu.c b/target-i386/cpu.c
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index d424211..e6821b6 100644
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--- a/target-i386/cpu.c
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+++ b/target-i386/cpu.c
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@@ -501,7 +501,9 @@ typedef struct x86_def_t {
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CPUID_EXT2_PDPE1GB */
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#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
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CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
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+#define TCG_EXT4_FEATURES 0
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#define TCG_SVM_FEATURES 0
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+#define TCG_KVM_FEATURES 0
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#define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \
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CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX)
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/* missing:
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@@ -2644,6 +2646,8 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
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env->features[FEAT_8000_0001_EDX] &= TCG_EXT2_FEATURES;
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env->features[FEAT_8000_0001_ECX] &= TCG_EXT3_FEATURES;
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env->features[FEAT_SVM] &= TCG_SVM_FEATURES;
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+ env->features[FEAT_KVM] &= TCG_KVM_FEATURES;
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+ env->features[FEAT_C000_0001_EDX] &= TCG_EXT4_FEATURES;
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env->features[FEAT_XSAVE] = 0;
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env->features[FEAT_7_0_ECX] &= TCG_7_0_ECX_FEATURES;
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env->features[FEAT_7_0_EDX] &= TCG_7_0_EDX_FEATURES;
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--
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1.8.3.1
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