1 files changed, 50 insertions, 1 deletions

diff --git a/arch/x86/kvm/debugfs.c b/arch/x86/kvm/debugfs.c
index bb5e9f635dde..c19c7ede9bd6 100644
--- a/arch/x86/kvm/debugfs.c
+++ b/arch/x86/kvm/debugfs.c
@@ -8,13 +8,62 @@
  *
  */
 #include <linux/kvm_host.h>
+#include <linux/debugfs.h>
 
 bool kvm_arch_has_vcpu_debugfs(void)
 {
-        return false;
+        return true;
 }
 
+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");
+
 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
 {
+        struct dentry *ret;
+
+        ret = debugfs_create_file("tsc-offset", 0444,
+                                                        vcpu->debugfs_dentry,
+                                                        vcpu, &vcpu_tsc_offset_fops);
+        if (!ret)
+                return -ENOMEM;
+
+        if (kvm_has_tsc_control) {
+                ret = debugfs_create_file("tsc-scaling-ratio", 0444,
+                                                        vcpu->debugfs_dentry,
+                                                        vcpu, &vcpu_tsc_scaling_fops);
+                if (!ret)
+                        return -ENOMEM;
+                ret = debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
+                                                        vcpu->debugfs_dentry,
+                                                        vcpu, &vcpu_tsc_scaling_frac_fops);
+                if (!ret)
+                        return -ENOMEM;
+
+        }
+
         return 0;
 }