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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-26 15:20:16 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:48 -0400 |
| commit | 1e9dfbd748f37dfa51fcdc82a7afddde1cf8d0ed (patch) | |
| tree | b3853b68019dcfbdded1075fa7b763164f92bd56 /arch/x86/kvm/vmx/evmcs.c | |
| parent | 158a48ecf776d0ebc916befcb0dc0862f136a31f (diff) | |
| download | linux-1e9dfbd748f37dfa51fcdc82a7afddde1cf8d0ed.tar.gz | |
KVM: nVMX: Use '-1' in 'hv_evmcs_vmptr' to indicate that eVMCS is not in use
Instead of checking 'vmx->nested.hv_evmcs' use '-1' in 'vmx->nested.hv_evmcs_vmptr' to indicate 'evmcs is not in use' state. This matches how we check 'vmx->nested.current_vmptr'. Introduce EVMPTR_INVALID and evmptr_is_valid() and use it instead of raw '-1' check as a preparation to adding other 'special' values. No functional change intended. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210526132026.270394-2-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/evmcs.c')
| -rw-r--r-- | arch/x86/kvm/vmx/evmcs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c index 41f24661af04..896b2a50b4aa 100644 --- a/arch/x86/kvm/vmx/evmcs.c +++ b/arch/x86/kvm/vmx/evmcs.c @@ -319,6 +319,9 @@ bool nested_enlightened_vmentry(struct kvm_vcpu *vcpu, u64 *evmcs_gpa) if (unlikely(!assist_page.enlighten_vmentry)) return false; + if (unlikely(!evmptr_is_valid(assist_page.current_nested_vmcs))) + return false; + *evmcs_gpa = assist_page.current_nested_vmcs; return true; |