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| author | Jim Mattson <jmattson@google.com> | 2017-12-22 21:11:12 +0100 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2018-01-16 16:49:58 +0100 |
| commit | 5b15706dbf5bdf0c9708ca9bb1f37e95e315daf2 (patch) | |
| tree | 6b17f8a8e3b1c020a5659fab694bb62b6a84f222 /arch | |
| parent | KVM: VMX: optimize shadow VMCS copying (diff) | |
| download | linux-5b15706dbf5bdf0c9708ca9bb1f37e95e315daf2.tar.xz linux-5b15706dbf5bdf0c9708ca9bb1f37e95e315daf2.zip | |
kvm: vmx: Introduce VMCS12_MAX_FIELD_INDEX
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index bdd3f155efae..bbfbed714dec 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -408,6 +408,12 @@ 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; } /* |