Commit 3b013a29 authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini

KVM: nVMX: Always sync GUEST_BNDCFGS when it comes from vmcs01

If L1 does not set VM_ENTRY_LOAD_BNDCFGS, then L1's BNDCFGS value must
be propagated to vmcs02 since KVM always runs with VM_ENTRY_LOAD_BNDCFGS
when MPX is supported.  Because the value effectively comes from vmcs01,
vmcs02 must be updated even if vmcs12 is clean.

Fixes: 62cf9bd8 ("KVM: nVMX: Fix emulation of VM_ENTRY_LOAD_BNDCFGS")
Cc: stable@vger.kernel.org
Cc: Liran Alon <liran.alon@oracle.com>
Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d28f4290
...@@ -2228,13 +2228,9 @@ static void prepare_vmcs02_rare(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12) ...@@ -2228,13 +2228,9 @@ static void prepare_vmcs02_rare(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
set_cr4_guest_host_mask(vmx); set_cr4_guest_host_mask(vmx);
if (kvm_mpx_supported()) { if (kvm_mpx_supported() && vmx->nested.nested_run_pending &&
if (vmx->nested.nested_run_pending &&
(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS)) (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS))
vmcs_write64(GUEST_BNDCFGS, vmcs12->guest_bndcfgs); vmcs_write64(GUEST_BNDCFGS, vmcs12->guest_bndcfgs);
else
vmcs_write64(GUEST_BNDCFGS, vmx->nested.vmcs01_guest_bndcfgs);
}
} }
/* /*
...@@ -2266,6 +2262,9 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, ...@@ -2266,6 +2262,9 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
kvm_set_dr(vcpu, 7, vcpu->arch.dr7); kvm_set_dr(vcpu, 7, vcpu->arch.dr7);
vmcs_write64(GUEST_IA32_DEBUGCTL, vmx->nested.vmcs01_debugctl); vmcs_write64(GUEST_IA32_DEBUGCTL, vmx->nested.vmcs01_debugctl);
} }
if (kvm_mpx_supported() && (!vmx->nested.nested_run_pending ||
!(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS)))
vmcs_write64(GUEST_BNDCFGS, vmx->nested.vmcs01_guest_bndcfgs);
vmx_set_rflags(vcpu, vmcs12->guest_rflags); vmx_set_rflags(vcpu, vmcs12->guest_rflags);
/* EXCEPTION_BITMAP and CR0_GUEST_HOST_MASK should basically be the /* EXCEPTION_BITMAP and CR0_GUEST_HOST_MASK should basically be the
......
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