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Commit 7ec36296 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Paolo Bonzini
Browse files

KVM: VMX: clean up bit operation on SECONDARY_VM_EXEC_CONTROL 



Use vmcs_set_bits() and vmcs_clear_bits() to clean up the code

Signed-off-by: default avatarXiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent feda805f

arch/x86/kvm/vmx.c

+6 −17
Original line number Diff line number Diff line
@@ -6636,7 +6636,6 @@ static int nested_vmx_check_permission(struct kvm_vcpu *vcpu) 


static inline void nested_release_vmcs12(struct vcpu_vmx *vmx)

{

	u32 exec_control;

	if (vmx->nested.current_vmptr == -1ull)

		return;
@@ -6649,9 +6648,8 @@ static inline void nested_release_vmcs12(struct vcpu_vmx *vmx) 
		   they were modified */

		copy_shadow_to_vmcs12(vmx);

		vmx->nested.sync_shadow_vmcs = false;

		exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);

		exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;

		vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);

		vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,

				SECONDARY_EXEC_SHADOW_VMCS);

		vmcs_write64(VMCS_LINK_POINTER, -1ull);

	}

	vmx->nested.posted_intr_nv = -1;
@@ -7047,7 +7045,6 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) 
{

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	gpa_t vmptr;

	u32 exec_control;



	if (!nested_vmx_check_permission(vcpu))

		return 1;
@@ -7079,9 +7076,8 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) 
		vmx->nested.current_vmcs12 = new_vmcs12;

		vmx->nested.current_vmcs12_page = page;

		if (enable_shadow_vmcs) {

			exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);

			exec_control |= SECONDARY_EXEC_SHADOW_VMCS;

			vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);

			vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,

				      SECONDARY_EXEC_SHADOW_VMCS);

			vmcs_write64(VMCS_LINK_POINTER,

				     __pa(vmx->nested.current_shadow_vmcs));

			vmx->nested.sync_shadow_vmcs = true;
@@ -7591,7 +7587,6 @@ static void vmx_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2) 
static int vmx_enable_pml(struct vcpu_vmx *vmx)

{

	struct page *pml_pg;

	u32 exec_control;



	pml_pg = alloc_page(GFP_KERNEL | __GFP_ZERO);

	if (!pml_pg)
@@ -7602,24 +7597,18 @@ static int vmx_enable_pml(struct vcpu_vmx *vmx) 
	vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));

	vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);



	exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);

	exec_control |= SECONDARY_EXEC_ENABLE_PML;

	vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);

	vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL, SECONDARY_EXEC_ENABLE_PML);



	return 0;

}



static void vmx_disable_pml(struct vcpu_vmx *vmx)

{

	u32 exec_control;



	ASSERT(vmx->pml_pg);

	__free_page(vmx->pml_pg);

	vmx->pml_pg = NULL;



	exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);

	exec_control &= ~SECONDARY_EXEC_ENABLE_PML;

	vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);

	vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL, SECONDARY_EXEC_ENABLE_PML);

}



static void vmx_flush_pml_buffer(struct kvm_vcpu *vcpu)