sched_smt_active() ? "vulnerable" : "disabled");
}
+static ssize_t tsx_async_abort_show_state(char *buf)
+{
+ if ((taa_mitigation == TAA_MITIGATION_TSX_DISABLED) ||
+ (taa_mitigation == TAA_MITIGATION_OFF))
+ return sprintf(buf, "%s\n", taa_strings[taa_mitigation]);
+
+ if (boot_cpu_has(X86_FEATURE_HYPERVISOR)) {
+ return sprintf(buf, "%s; SMT Host state unknown\n",
+ taa_strings[taa_mitigation]);
+ }
+
+ return sprintf(buf, "%s; SMT %s\n", taa_strings[taa_mitigation],
+ sched_smt_active() ? "vulnerable" : "disabled");
+}
+
static char *stibp_state(void)
{
if (spectre_v2_enabled == SPECTRE_V2_IBRS_ENHANCED)
case X86_BUG_MDS:
return mds_show_state(buf);
+ case X86_BUG_TAA:
+ return tsx_async_abort_show_state(buf);
+
default:
break;
}
{
return cpu_show_common(dev, attr, buf, X86_BUG_MDS);
}
+
+ssize_t cpu_show_tsx_async_abort(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return cpu_show_common(dev, attr, buf, X86_BUG_TAA);
+}
#endif
return sprintf(buf, "Not affected\n");
}
+ssize_t __weak cpu_show_tsx_async_abort(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "Not affected\n");
+}
+
static DEVICE_ATTR(meltdown, 0444, cpu_show_meltdown, NULL);
static DEVICE_ATTR(spectre_v1, 0444, cpu_show_spectre_v1, NULL);
static DEVICE_ATTR(spectre_v2, 0444, cpu_show_spectre_v2, NULL);
static DEVICE_ATTR(spec_store_bypass, 0444, cpu_show_spec_store_bypass, NULL);
static DEVICE_ATTR(l1tf, 0444, cpu_show_l1tf, NULL);
static DEVICE_ATTR(mds, 0444, cpu_show_mds, NULL);
+static DEVICE_ATTR(tsx_async_abort, 0444, cpu_show_tsx_async_abort, NULL);
static struct attribute *cpu_root_vulnerabilities_attrs[] = {
&dev_attr_meltdown.attr,
&dev_attr_spec_store_bypass.attr,
&dev_attr_l1tf.attr,
&dev_attr_mds.attr,
+ &dev_attr_tsx_async_abort.attr,
NULL
};
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_mds(struct device *dev,
struct device_attribute *attr, char *buf);
+extern ssize_t cpu_show_tsx_async_abort(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
extern __printf(4, 5)
struct device *cpu_device_create(struct device *parent, void *drvdata,