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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-02-19 00:51:43 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-05-23 01:15:23 +0300 |
| commit | 5a9c3df41fd8337f34b5e6eaf4ceb02c79c3055d (patch) | |
| tree | 5d390337a1e203a84053f6d1153ea4384b3b24a7 /drivers | |
| parent | 5fe37cecb4d2a8dec7b4de8ccae3059f326de9a9 (diff) | |
| download | linux-5a9c3df41fd8337f34b5e6eaf4ceb02c79c3055d.tar.xz | |
x86/speculation/mds: Add sysfs reporting for MDS
commit 8a4b06d391b0a42a373808979b5028f5c84d9c6a upstream.
Add the sysfs reporting file for MDS. It exposes the vulnerability and
mitigation state similar to the existing files for the other speculative
hardware vulnerabilities.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 3.16:
- Test x86_hyper instead of using hypervisor_is_type()
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/cpu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index c55acc37fef2..2f22e8960d8a 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -450,11 +450,18 @@ ssize_t __weak cpu_show_l1tf(struct device *dev, return sprintf(buf, "Not affected\n"); } +ssize_t __weak cpu_show_mds(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 struct attribute *cpu_root_vulnerabilities_attrs[] = { &dev_attr_meltdown.attr, @@ -462,6 +469,7 @@ static struct attribute *cpu_root_vulnerabilities_attrs[] = { &dev_attr_spectre_v2.attr, &dev_attr_spec_store_bypass.attr, &dev_attr_l1tf.attr, + &dev_attr_mds.attr, NULL }; |