From a3c43649600bdbe075597247c4b5017c3d3563b7 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Wed, 12 Jan 2022 18:01:31 +0100 Subject: [PATCH] KVM: nVMX: eVMCS: Filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER [ Upstream commit 7a601e2cf61558dfd534a9ecaad09f5853ad8204 ] Enlightened VMCS v1 doesn't have VMX_PREEMPTION_TIMER_VALUE field, PIN_BASED_VMX_PREEMPTION_TIMER is also filtered out already so it makes sense to filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER too. Note, none of the currently existing Windows/Hyper-V versions are known to enable 'save VMX-preemption timer value' when eVMCS is in use, the change is aimed at making the filtering future proof. Signed-off-by: Vitaly Kuznetsov Message-Id: <20220112170134.1904308-3-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini Signed-off-by: Sasha Levin --- arch/x86/kvm/vmx/evmcs.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/evmcs.h b/arch/x86/kvm/vmx/evmcs.h index 152ab0a..b43976e 100644 --- a/arch/x86/kvm/vmx/evmcs.h +++ b/arch/x86/kvm/vmx/evmcs.h @@ -59,7 +59,9 @@ DECLARE_STATIC_KEY_FALSE(enable_evmcs); SECONDARY_EXEC_SHADOW_VMCS | \ SECONDARY_EXEC_TSC_SCALING | \ SECONDARY_EXEC_PAUSE_LOOP_EXITING) -#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL) +#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL \ + (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | \ + VM_EXIT_SAVE_VMX_PREEMPTION_TIMER) #define EVMCS1_UNSUPPORTED_VMENTRY_CTRL (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL) #define EVMCS1_UNSUPPORTED_VMFUNC (VMX_VMFUNC_EPTP_SWITCHING) -- 2.7.4