From: Sean Christopherson <[email protected]> Prepare to shadow all major control fields on a per-VMCS basis, which allows KVM to avoid costly VMWRITEs when switching between vmcs01 and vmcs02.
Shadowing pin controls also allows a future patch to remove the per-VMCS 'hv_timer_armed' flag, as the shadow copy is a superset of said flag. Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> --- arch/x86/kvm/vmx/nested.c | 3 ++- arch/x86/kvm/vmx/vmx.c | 10 ++++------ arch/x86/kvm/vmx/vmx.h | 2 ++ 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index f5612b475393..0179ac083dd1 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -285,6 +285,7 @@ static void vmx_switch_vmcs(struct kvm_vcpu *vcpu, struct loaded_vmcs *vmcs) vm_entry_controls_reset_shadow(vmx); vm_exit_controls_reset_shadow(vmx); + pin_controls_reset_shadow(vmx); vmx_segment_cache_clear(vmx); } @@ -2026,7 +2027,7 @@ static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12) } else { exec_control &= ~PIN_BASED_POSTED_INTR; } - vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, exec_control); + pin_controls_init(vmx, exec_control); /* * EXEC CONTROLS diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 91e43c03144d..6eb4063d98fc 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -3844,7 +3844,7 @@ static void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); - vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_ctrl(vmx)); + pin_controls_set(vmx, vmx_pin_based_exec_ctrl(vmx)); if (cpu_has_secondary_exec_ctrls()) { if (kvm_vcpu_apicv_active(vcpu)) vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL, @@ -4042,7 +4042,7 @@ static void vmx_vcpu_setup(struct vcpu_vmx *vmx) vmcs_write64(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */ /* Control */ - vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_ctrl(vmx)); + pin_controls_init(vmx, vmx_pin_based_exec_ctrl(vmx)); vmx->hv_deadline_tsc = -1; vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, vmx_exec_control(vmx)); @@ -6366,8 +6366,7 @@ static void vmx_arm_hv_timer(struct vcpu_vmx *vmx, u32 val) { vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, val); if (!vmx->loaded_vmcs->hv_timer_armed) - vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL, - PIN_BASED_VMX_PREEMPTION_TIMER); + pin_controls_setbit(vmx, PIN_BASED_VMX_PREEMPTION_TIMER); vmx->loaded_vmcs->hv_timer_armed = true; } @@ -6396,8 +6395,7 @@ static void vmx_update_hv_timer(struct kvm_vcpu *vcpu) } if (vmx->loaded_vmcs->hv_timer_armed) - vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL, - PIN_BASED_VMX_PREEMPTION_TIMER); + pin_controls_clearbit(vmx, PIN_BASED_VMX_PREEMPTION_TIMER); vmx->loaded_vmcs->hv_timer_armed = false; } diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 0a1b37d69f13..3c0a8b01f1f0 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -88,6 +88,7 @@ struct pt_desc { struct vmx_controls_shadow { u32 vm_entry; u32 vm_exit; + u32 pin; }; /* @@ -423,6 +424,7 @@ static inline u8 vmx_get_rvi(void) } BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS) BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS) +BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL) static inline void vmx_segment_cache_clear(struct vcpu_vmx *vmx) { -- 1.8.3.1
