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Commit 4941b8cb authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: x86: rename argument to kvm_set_tsc_khz 



This refers to the desired (scaled) frequency, which is called
user_tsc_khz in the rest of the file.

Reviewed-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 6f05485d

arch/x86/kvm/x86.c

+7 −7
Original line number Diff line number Diff line
@@ -1290,23 +1290,23 @@ static int set_tsc_khz(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale) 
	return 0;

}



static int kvm_set_tsc_khz(struct kvm_vcpu *vcpu, u32 this_tsc_khz)

static int kvm_set_tsc_khz(struct kvm_vcpu *vcpu, u32 user_tsc_khz)

{

	u32 thresh_lo, thresh_hi;

	int use_scaling = 0;



	/* tsc_khz can be zero if TSC calibration fails */

	if (this_tsc_khz == 0) {

	if (user_tsc_khz == 0) {

		/* set tsc_scaling_ratio to a safe value */

		vcpu->arch.tsc_scaling_ratio = kvm_default_tsc_scaling_ratio;

		return -1;

	}



	/* Compute a scale to convert nanoseconds in TSC cycles */

	kvm_get_time_scale(this_tsc_khz, NSEC_PER_SEC / 1000,

	kvm_get_time_scale(user_tsc_khz, NSEC_PER_SEC / 1000,

			   &vcpu->arch.virtual_tsc_shift,

			   &vcpu->arch.virtual_tsc_mult);

	vcpu->arch.virtual_tsc_khz = this_tsc_khz;

	vcpu->arch.virtual_tsc_khz = user_tsc_khz;



	/*

	 * Compute the variation in TSC rate which is acceptable
@@ -1316,11 +1316,11 @@ static int kvm_set_tsc_khz(struct kvm_vcpu *vcpu, u32 this_tsc_khz) 
	 */

	thresh_lo = adjust_tsc_khz(tsc_khz, -tsc_tolerance_ppm);

	thresh_hi = adjust_tsc_khz(tsc_khz, tsc_tolerance_ppm);

	if (this_tsc_khz < thresh_lo || this_tsc_khz > thresh_hi) {

		pr_debug("kvm: requested TSC rate %u falls outside tolerance [%u,%u]\n", this_tsc_khz, thresh_lo, thresh_hi);

	if (user_tsc_khz < thresh_lo || user_tsc_khz > thresh_hi) {

		pr_debug("kvm: requested TSC rate %u falls outside tolerance [%u,%u]\n", user_tsc_khz, thresh_lo, thresh_hi);

		use_scaling = 1;

	}

	return set_tsc_khz(vcpu, this_tsc_khz, use_scaling);

	return set_tsc_khz(vcpu, user_tsc_khz, use_scaling);

}



static u64 compute_guest_tsc(struct kvm_vcpu *vcpu, s64 kernel_ns)