KVM: nVMX: Use '-1' in 'hv_evmcs_vmptr' to indicate that eVMCS is not in use

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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>

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This commit is contained in:

Vitaly Kuznetsov 2021-05-26 15:20:16 +02:00 • committed by Paolo Bonzini

parent 158a48ecf7

commit 1e9dfbd748

5 changed files with 40 additions and 28 deletions

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arch/x86/kvm/vmx/evmcs.c

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arch/x86/kvm/vmx/evmcs.h

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arch/x86/kvm/vmx/nested.c

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arch/x86/kvm/vmx/nested.h

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arch/x86/kvm/vmx/vmx.c

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