From 5b15706dbf5bdf0c9708ca9bb1f37e95e315daf2 Mon Sep 17 00:00:00 2001 From: Jim Mattson Date: Fri, 22 Dec 2017 12:11:12 -0800 Subject: [PATCH] kvm: vmx: Introduce VMCS12_MAX_FIELD_INDEX MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Paolo Bonzini Signed-off-by: Radim Krčmář --- arch/x86/kvm/vmx.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) 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 @@ -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; } /*