[5/6] KVM: X86: Move kvm_x86_ops.cpuid_update() into kvm_update_state_based_on_cpuid()

Commit Message

Xiaoyao Li May 29, 2020, 8:55 a.m. UTC

kvm_x86_ops.cpuid_update() is used to update vmx/svm settings based on
updated CPUID settings. So it's supposed to be called after CPUIDs are
fully updated, i.e., kvm_update_cpuid(), not in the middle stage.

Put it in kvm_update_state_based_on_cpuid() to make it clear that it's
to update vmx/svm specific states based on CPUID.

Signed-off-by: Xiaoyao Li <[e-mail]>
---
Should we rename kvm_x86_ops.cpuid_update to something like
kvm_x86_ops.update_state_based_on_cpuid?

cpuid_update is really confusing especially when kvm_x86_ops.update_cpuid()
is needed someday.
---
 arch/x86/kvm/cpuid.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index a4a2072f5253..5d4da8970940 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -136,6 +136,8 @@  void kvm_update_state_based_on_cpuid(struct kvm_vcpu *vcpu)
 		vcpu->arch.guest_supported_xcr0 =
 			(best->eax | ((u64)best->edx << 32)) & supported_xcr0;
 
+	kvm_x86_ops.cpuid_update(vcpu);
+
 	/* Note, maxphyaddr must be updated before tdp_level. */
 	vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);
 	vcpu->arch.tdp_level = kvm_x86_ops.get_tdp_level(vcpu);
@@ -227,7 +229,6 @@  int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
 
 	cpuid_fix_nx_cap(vcpu);
 	kvm_apic_set_version(vcpu);
-	kvm_x86_ops.cpuid_update(vcpu);
 	kvm_update_cpuid(vcpu);
 	kvm_update_state_based_on_cpuid(vcpu);
 
@@ -257,7 +258,6 @@  int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
 	}
 
 	kvm_apic_set_version(vcpu);
-	kvm_x86_ops.cpuid_update(vcpu);
 	kvm_update_cpuid(vcpu);
 	kvm_update_state_based_on_cpuid(vcpu);
 out: