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Subject[PATCH 3/5] KVM: x86: Move call to update_exception_bitmap() into VMX code
Date
Now that vcpu_after_set_cpuid() and update_exception_bitmap() are called
back-to-back, subsume the exception bitmap update into the common CPUID
update. Drop the SVM invocation entirely as SVM's exception bitmap
doesn't vary with respect to guest CPUID.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
arch/x86/kvm/cpuid.c | 1 -
arch/x86/kvm/vmx/vmx.c | 3 +++
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 963bad7bc0ff..dd62156b8868 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -147,7 +147,6 @@ static void kvm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)

/* Invoke the vendor callback only after the above state is updated. */
kvm_x86_ops.vcpu_after_set_cpuid(vcpu);
- kvm_x86_ops.update_exception_bitmap(vcpu);
}

static int is_efer_nx(void)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 4551a7e80ebc..223e070c48b2 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7232,6 +7232,9 @@ static void vmx_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
vmx_set_guest_uret_msr(vmx, msr, enabled ? 0 : TSX_CTRL_RTM_DISABLE);
}
}
+
+ /* Refresh #PF interception to account for MAXPHYADDR changes. */
+ update_exception_bitmap(vcpu);
}

static __init void vmx_set_cpu_caps(void)
--
2.28.0
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