Commit 3e3f5026 authored by Luiz Capitulino's avatar Luiz Capitulino Committed by Paolo Bonzini
Browse files

kvm: x86: drop read_tsc_offset() 



The TSC offset can now be read directly from struct kvm_arch_vcpu.

Signed-off-by: default avatarLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent a545ab6a

arch/x86/include/asm/kvm_host.h

+0 −1
Original line number Diff line number Diff line
@@ -954,7 +954,6 @@ struct kvm_x86_ops { 


	bool (*has_wbinvd_exit)(void);



	u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);

	void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);



	u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);

arch/x86/kvm/svm.c

+0 −8
Original line number Diff line number Diff line
@@ -1119,13 +1119,6 @@ static void init_sys_seg(struct vmcb_seg *seg, uint32_t type) 
	seg->base = 0;

}



static u64 svm_read_tsc_offset(struct kvm_vcpu *vcpu)

{

	struct vcpu_svm *svm = to_svm(vcpu);



	return svm->vmcb->control.tsc_offset;

}



static void svm_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)

{

	struct vcpu_svm *svm = to_svm(vcpu);
@@ -5427,7 +5420,6 @@ static struct kvm_x86_ops svm_x86_ops = { 


	.has_wbinvd_exit = svm_has_wbinvd_exit,



	.read_tsc_offset = svm_read_tsc_offset,

	.write_tsc_offset = svm_write_tsc_offset,

	.adjust_tsc_offset_guest = svm_adjust_tsc_offset_guest,

	.read_l1_tsc = svm_read_l1_tsc,

arch/x86/kvm/vmx.c

+0 −6
Original line number Diff line number Diff line
@@ -2609,11 +2609,6 @@ static u64 vmx_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc) 
	return host_tsc + tsc_offset;

}



static u64 vmx_read_tsc_offset(struct kvm_vcpu *vcpu)

{

	return vmcs_read64(TSC_OFFSET);

}



/*

 * writes 'offset' into guest's timestamp counter offset register

 */
@@ -11286,7 +11281,6 @@ static struct kvm_x86_ops vmx_x86_ops = { 


	.has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,



	.read_tsc_offset = vmx_read_tsc_offset,

	.write_tsc_offset = vmx_write_tsc_offset,

	.adjust_tsc_offset_guest = vmx_adjust_tsc_offset_guest,

	.read_l1_tsc = vmx_read_l1_tsc,

arch/x86/kvm/x86.c

+1 −1
Original line number Diff line number Diff line
@@ -1367,7 +1367,7 @@ static void kvm_track_tsc_matching(struct kvm_vcpu *vcpu) 


static void update_ia32_tsc_adjust_msr(struct kvm_vcpu *vcpu, s64 offset)

{

	u64 curr_offset = kvm_x86_ops->read_tsc_offset(vcpu);

	u64 curr_offset = vcpu->arch.tsc_offset;

	vcpu->arch.ia32_tsc_adjust_msr += offset - curr_offset;

}