From fa97d7dba7538adf174c3984e726c0537ab553a4 Mon Sep 17 00:00:00 2001 From: Liran Alon Date: Wed, 18 Jul 2018 14:07:59 +0200 Subject: [PATCH] KVM: nVMX: Allow VMPTRLD for shadow VMCS if vCPU supports VMCS shadowing Signed-off-by: Liran Alon Signed-off-by: Jim Mattson Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 82b01b34a3a2..44e2b82f6519 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1720,6 +1720,12 @@ static inline bool nested_cpu_supports_monitor_trap_flag(struct kvm_vcpu *vcpu) CPU_BASED_MONITOR_TRAP_FLAG; } +static inline bool nested_cpu_has_vmx_shadow_vmcs(struct kvm_vcpu *vcpu) +{ + return to_vmx(vcpu)->nested.msrs.secondary_ctls_high & + SECONDARY_EXEC_SHADOW_VMCS; +} + static inline bool nested_cpu_has(struct vmcs12 *vmcs12, u32 bit) { return vmcs12->cpu_based_vm_exec_control & bit; @@ -8465,7 +8471,8 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) } new_vmcs12 = kmap(page); if (new_vmcs12->hdr.revision_id != VMCS12_REVISION || - new_vmcs12->hdr.shadow_vmcs) { + (new_vmcs12->hdr.shadow_vmcs && + !nested_cpu_has_vmx_shadow_vmcs(vcpu))) { kunmap(page); kvm_release_page_clean(page); nested_vmx_failValid(vcpu, -- GitLab