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[Qemu-devel] [PATCH 2/9] target-i386: kvm: Enable all supported KVM feat
From: |
Eduardo Habkost |
Subject: |
[Qemu-devel] [PATCH 2/9] target-i386: kvm: Enable all supported KVM features for -cpu host |
Date: |
Fri, 4 Jan 2013 13:37:37 -0200 |
When using -cpu host, we don't need to use the kvm_default_features
variable, as the user is explicitly asking QEMU to enable all feature
supported by the host.
This changes the kvm_cpu_fill_host() code to use GET_SUPPORTED_CPUID to
initialize the kvm_features field, so we get all host KVM features
enabled.
This will also allow use to properly check/enforce KVM features inside
kvm_check_features_against_host() later. For example, we will be able to
make this:
$ qemu-system-x86_64 -cpu ...,+kvm_pv_eoi,enforce
refuse to start if kvm_pv_eoi is not supported by the host (after we fix
kvm_check_features_against_host() to check KVM flags as well).
Signed-off-by: Eduardo Habkost <address@hidden>
---
Changes v2:
- Coding style (indentation) fix
Cc: Gleb Natapov <address@hidden>
Cc: Michael S. Tsirkin <address@hidden>
Cc: Marcelo Tosatti <address@hidden>
Cc: address@hidden
---
target-i386/cpu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 649cfb2..4e26b11 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -909,6 +909,8 @@ static void kvm_cpu_fill_host(x86_def_t *x86_cpu_def)
/* Other KVM-specific feature fields: */
x86_cpu_def->svm_features =
kvm_arch_get_supported_cpuid(s, 0x8000000A, 0, R_EDX);
+ x86_cpu_def->kvm_features =
+ kvm_arch_get_supported_cpuid(s, KVM_CPUID_FEATURES, 0, R_EAX);
#endif /* CONFIG_KVM */
}
--
1.7.11.7
- [Qemu-devel] [PATCH 0/9] target-i386: make "enforce" flag work as it should, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 2/9] target-i386: kvm: Enable all supported KVM features for -cpu host,
Eduardo Habkost <=
- [Qemu-devel] [PATCH 4/9] target-i386: check/enforce: Do not ignore "hypervisor" flag, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 5/9] target-i386: check/enforce: Check all CPUID.80000001H.EDX bits, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 8/9] target-i386: Call kvm_check_features_against_host() only if CONFIG_KVM is set, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 6/9] target-i386: check/enforce: Check SVM flag support as well, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 7/9] target-i386: check/enforce: Eliminate check_feat field, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 9/9] target-i386: check/enforce: Check all feature words, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 1/9] target-i386: kvm: -cpu host: Use GET_SUPPORTED_CPUID for SVM features, Eduardo Habkost, 2013/01/04
- [Qemu-devel] [PATCH 3/9] target-i386: check/enforce: Fix CPUID leaf numbers on error messages, Eduardo Habkost, 2013/01/04
- Message not available