From eceb9973d908cb327372bf0d04f2d1ee0b27bff5 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 13 Jun 2019 16:16:39 +0200 Subject: [PATCH] KVM: nVMX: shadow pin based execution controls The VMX_PREEMPTION_TIMER flag may be toggled frequently, though not *very* frequently. Since it does not affect KVM's dirty logic, e.g. the preemption timer value is loaded from vmcs12 even if vmcs12 is "clean", there is no need to mark vmcs12 dirty when L1 writes pin controls, and shadowing the field achieves that. Reviewed-by: Paolo Bonzini Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx/vmcs_shadow_fields.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/vmx/vmcs_shadow_fields.h b/arch/x86/kvm/vmx/vmcs_shadow_fields.h index 4cea018ba285..eb1ecd16fd22 100644 --- a/arch/x86/kvm/vmx/vmcs_shadow_fields.h +++ b/arch/x86/kvm/vmx/vmcs_shadow_fields.h @@ -47,6 +47,7 @@ SHADOW_FIELD_RO(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code) SHADOW_FIELD_RO(GUEST_CS_AR_BYTES, guest_cs_ar_bytes) SHADOW_FIELD_RO(GUEST_SS_AR_BYTES, guest_ss_ar_bytes) SHADOW_FIELD_RW(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control) +SHADOW_FIELD_RW(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control) SHADOW_FIELD_RW(EXCEPTION_BITMAP, exception_bitmap) SHADOW_FIELD_RW(VM_ENTRY_EXCEPTION_ERROR_CODE, vm_entry_exception_error_code) SHADOW_FIELD_RW(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field)