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kvm: vmx: Introduce VMCS12_MAX_FIELD_INDEX

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This is the highest index value used in any supported VMCS12 field
encoding. It is used to populate the IA32_VMX_VMCS_ENUM MSR.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Jim Mattson 2017-12-22 12:11:12 -08:00 committed by Radim Krčmář
parent 44900ba65e
commit 5b15706dbf
1 changed files with 7 additions and 1 deletions
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8
arch/x86/kvm/vmx.c
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@ -407,6 +407,12 @@ struct __packed vmcs12 {
*/
#define VMCS12_SIZE 0x1000
/*
* VMCS12_MAX_FIELD_INDEX is the highest index value used in any
* supported VMCS12 field encoding.
*/
#define VMCS12_MAX_FIELD_INDEX 0x17
/*
* The nested_vmx structure is part of vcpu_vmx, and holds information we need
* for correct emulation of VMX (i.e., nested VMX) on this vcpu.
@ -2923,7 +2929,7 @@ static void nested_vmx_setup_ctls_msrs(struct vcpu_vmx *vmx)
rdmsrl(MSR_IA32_VMX_CR4_FIXED1, vmx->nested.nested_vmx_cr4_fixed1);
/* highest index: VMX_PREEMPTION_TIMER_VALUE */
vmx->nested.nested_vmx_vmcs_enum = 0x2e;
vmx->nested.nested_vmx_vmcs_enum = VMCS12_MAX_FIELD_INDEX << 1;
}
/*