From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/x86/kvm/debugfs.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 arch/x86/kvm/debugfs.c (limited to 'arch/x86/kvm/debugfs.c') diff --git a/arch/x86/kvm/debugfs.c b/arch/x86/kvm/debugfs.c new file mode 100644 index 000000000..7e818d64b --- /dev/null +++ b/arch/x86/kvm/debugfs.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Kernel-based Virtual Machine driver for Linux + * + * Copyright 2016 Red Hat, Inc. and/or its affiliates. + */ +#include +#include +#include "lapic.h" + +static int vcpu_get_timer_advance_ns(void *data, u64 *val) +{ + struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; + *val = vcpu->arch.apic->lapic_timer.timer_advance_ns; + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(vcpu_timer_advance_ns_fops, vcpu_get_timer_advance_ns, NULL, "%llu\n"); + +static int vcpu_get_tsc_offset(void *data, u64 *val) +{ + struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; + *val = vcpu->arch.tsc_offset; + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_offset_fops, vcpu_get_tsc_offset, NULL, "%lld\n"); + +static int vcpu_get_tsc_scaling_ratio(void *data, u64 *val) +{ + struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; + *val = vcpu->arch.tsc_scaling_ratio; + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_fops, vcpu_get_tsc_scaling_ratio, NULL, "%llu\n"); + +static int vcpu_get_tsc_scaling_frac_bits(void *data, u64 *val) +{ + *val = kvm_tsc_scaling_ratio_frac_bits; + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bits, NULL, "%llu\n"); + +void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry) +{ + debugfs_create_file("tsc-offset", 0444, debugfs_dentry, vcpu, + &vcpu_tsc_offset_fops); + + if (lapic_in_kernel(vcpu)) + debugfs_create_file("lapic_timer_advance_ns", 0444, + debugfs_dentry, vcpu, + &vcpu_timer_advance_ns_fops); + + if (kvm_has_tsc_control) { + debugfs_create_file("tsc-scaling-ratio", 0444, + debugfs_dentry, vcpu, + &vcpu_tsc_scaling_fops); + debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444, + debugfs_dentry, vcpu, + &vcpu_tsc_scaling_frac_fops); + } +} -- cgit v1.2.3