[PATCH 45/60] kvm: x86: Update state for all plane VCPUs after CPUID update

[Jörg Rödel]

From: Joerg Roedel <joerg.roedel@xxxxxxx>

Make sure to update CPUID dependent state for all VCPUs of a given
plane when CPUID state is updated.

Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
 arch/x86/kvm/cpuid.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 27e2f7e25038..fab075bb6fdc 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -513,6 +513,8 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2,
 {
 	struct kvm_vcpu_common *common = vcpu->common;
 	u32 vcpu_caps[NR_KVM_CPU_CAPS];
+	struct kvm_vcpu *v;
+	unsigned i;
 	int r;
 
 	/*
@@ -562,9 +564,11 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2,
 
 #ifdef CONFIG_KVM_HYPERV
 	if (kvm_cpuid_has_hyperv(vcpu)) {
-		r = kvm_hv_vcpu_init(vcpu);
-		if (r)
-			goto err;
+		vcpu_for_each_plane(common, i, v) {
+			r = kvm_hv_vcpu_init(vcpu);
+			if (r)
+				goto err;
+		}
 	}
 #endif
 
@@ -572,10 +576,12 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2,
 	if (r)
 		goto err;
 
+	vcpu_for_each_plane(vcpu->common, i, v) {
 #ifdef CONFIG_KVM_XEN
-	vcpu->arch.xen.cpuid = kvm_get_hypervisor_cpuid(vcpu, XEN_SIGNATURE);
+		v->arch.xen.cpuid = kvm_get_hypervisor_cpuid(vcpu, XEN_SIGNATURE);
 #endif
-	kvm_vcpu_after_set_cpuid(vcpu);
+		kvm_vcpu_after_set_cpuid(v);
+	}
 
 success:
 	kvfree(e2);
-- 
2.53.0