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hv: add a cache register for VMX_PROC_VM_EXEC_CONTROLS

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This patch adds a cache register for VMX_PROC_VM_EXEC_CONTROLS
to avoid the frequent VMCS access.

Tracked-On: #5605
Signed-off-by: Jie Deng <jie.deng@intel.com>
This commit is contained in:
Jie Deng 2020-12-28 14:17:21 +08:00 committed by acrnsi-robot
parent f291997811
commit 27d5711b62
4 changed files with 15 additions and 29 deletions
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27
hypervisor/arch/x86/guest/virq.c
View File

@ -311,17 +311,14 @@ void vcpu_inject_ss(struct acrn_vcpu *vcpu)
int32_t interrupt_window_vmexit_handler(struct acrn_vcpu *vcpu)
{
uint32_t value32;
TRACE_2L(TRACE_VMEXIT_INTERRUPT_WINDOW, 0UL, 0UL);
/* Disable interrupt-window exiting first.
* acrn_handle_pending_request will continue handle for this vcpu
*/
vcpu->arch.irq_window_enabled = false;
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
value32 &= ~(VMX_PROCBASED_CTLS_IRQ_WIN);
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
vcpu->arch.proc_vm_exec_ctrls &= ~(VMX_PROCBASED_CTLS_IRQ_WIN);
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, vcpu->arch.proc_vm_exec_ctrls);
vcpu_retain_rip(vcpu);
return 0;
@ -363,7 +360,6 @@ int32_t acrn_handle_pending_request(struct acrn_vcpu *vcpu)
{
bool injected = false;
int32_t ret = 0;
uint32_t tmp;
struct acrn_vcpu_arch *arch = &vcpu->arch;
uint64_t *pending_req_bits = &arch->pending_req;
@ -462,9 +458,8 @@ int32_t acrn_handle_pending_request(struct acrn_vcpu *vcpu)
if (bitmap_test(ACRN_REQUEST_EXTINT, pending_req_bits) ||
bitmap_test(ACRN_REQUEST_NMI, pending_req_bits) ||
vlapic_has_pending_delivery_intr(vcpu)) {
tmp = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
tmp |= VMX_PROCBASED_CTLS_IRQ_WIN;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, tmp);
vcpu->arch.proc_vm_exec_ctrls |= VMX_PROCBASED_CTLS_IRQ_WIN;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, vcpu->arch.proc_vm_exec_ctrls);
arch->irq_window_enabled = true;
}
}
@ -554,7 +549,6 @@ static int32_t emulate_splitlock(struct acrn_vcpu *vcpu, uint32_t exception_vect
uint8_t inst[1];
uint32_t err_code = 0U;
uint64_t fault_addr;
uint32_t value32;
/* Queue the exception by default if the exception cannot be handled. */
*queue_exception = true;
@ -595,10 +589,8 @@ static int32_t emulate_splitlock(struct acrn_vcpu *vcpu, uint32_t exception_vect
vcpu->arch.inst_len = 1U;
if (vcpu->vm->hw.created_vcpus > 1U) {
/* Enable MTF to start single-stepping execution */
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
value32 |= VMX_PROCBASED_CTLS_MON_TRAP;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
vcpu->arch.proc_vm_exec_ctrls |= VMX_PROCBASED_CTLS_MON_TRAP;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, vcpu->arch.proc_vm_exec_ctrls);
vcpu->arch.emulating_lock = true;
}
@ -716,15 +708,12 @@ int32_t exception_vmexit_handler(struct acrn_vcpu *vcpu)
int32_t nmi_window_vmexit_handler(struct acrn_vcpu *vcpu)
{
uint32_t value32;
/*
* Disable NMI-window exiting here. We will process
* the pending request in acrn_handle_pending_request later
*/
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
value32 &= ~VMX_PROCBASED_CTLS_NMI_WINEXIT;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
vcpu->arch.proc_vm_exec_ctrls &= ~VMX_PROCBASED_CTLS_NMI_WINEXIT;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, vcpu->arch.proc_vm_exec_ctrls);
vcpu_retain_rip(vcpu);

9
hypervisor/arch/x86/guest/vmcs.c
View File

@ -288,7 +288,7 @@ static void init_exec_ctrl(struct acrn_vcpu *vcpu)
* Enable VM_EXIT for rdpmc execution.
*/
value32 |= VMX_PROCBASED_CTLS_RDPMC;
vcpu->arch.proc_vm_exec_ctrls = value32;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
pr_dbg("VMX_PROC_VM_EXEC_CONTROLS: 0x%x ", value32);
@ -595,10 +595,9 @@ void switch_apicv_mode_x2apic(struct acrn_vcpu *vcpu)
value32 &= ~VMX_EXIT_CTLS_ACK_IRQ;
exec_vmwrite32(VMX_EXIT_CONTROLS, value32);
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
value32 &= ~VMX_PROCBASED_CTLS_TPR_SHADOW;
value32 &= ~VMX_PROCBASED_CTLS_HLT;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
vcpu->arch.proc_vm_exec_ctrls &= ~VMX_PROCBASED_CTLS_TPR_SHADOW;
vcpu->arch.proc_vm_exec_ctrls &= ~VMX_PROCBASED_CTLS_HLT;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, vcpu->arch.proc_vm_exec_ctrls);
exec_vmwrite32(VMX_TPR_THRESHOLD, 0U);

7
hypervisor/arch/x86/guest/vmexit.c
View File

@ -292,11 +292,8 @@ static void vcpu_complete_split_lock_emulation(struct acrn_vcpu *cur_vcpu)
/* MTF is currently only used for split-lock emulation */
static int32_t mtf_vmexit_handler(struct acrn_vcpu *vcpu)
{
uint32_t value32;
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
value32 &= ~(VMX_PROCBASED_CTLS_MON_TRAP);
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
vcpu->arch.proc_vm_exec_ctrls &= ~(VMX_PROCBASED_CTLS_MON_TRAP);
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, vcpu->arch.proc_vm_exec_ctrls);
vcpu_retain_rip(vcpu);

1
hypervisor/include/arch/x86/guest/vcpu.h
View File

@ -244,6 +244,7 @@ struct acrn_vcpu_arch {
uint32_t exit_reason;
uint32_t idt_vectoring_info;
uint64_t exit_qualification;
uint32_t proc_vm_exec_ctrls;
uint32_t inst_len;
/* Information related to secondary / AP VCPU start-up */