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| author | Borislav Petkov (AMD) <bp@alien8.de> | 2024-09-11 10:53:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-10 15:59:54 +0200 |
| commit | d12145e8454fbd1de168af57d444b943e4300dc1 (patch) | |
| tree | b2597b7748fb9d01836e6934e9ed84bd28368bab /drivers/base/cpu.c | |
| parent | 3893cd05fcf60c239a35c833a6677783ec18dfc5 (diff) | |
| download | linux-d12145e8454fbd1de168af57d444b943e4300dc1.tar.gz linux-d12145e8454fbd1de168af57d444b943e4300dc1.tar.bz2 linux-d12145e8454fbd1de168af57d444b943e4300dc1.zip | |
x86/bugs: Add a Transient Scheduler Attacks mitigation
commit d8010d4ba43e9f790925375a7de100604a5e2dba upstream.
Add the required features detection glue to bugs.c et all in order to
support the TSA mitigation.
Co-developed-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/cpu.c')
| -rw-r--r-- | drivers/base/cpu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 27aff2503765..d68c60f35764 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -601,6 +601,11 @@ ssize_t __weak cpu_show_indirect_target_selection(struct device *dev, return sysfs_emit(buf, "Not affected\n"); } +ssize_t __weak cpu_show_tsa(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sysfs_emit(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); @@ -616,6 +621,7 @@ static DEVICE_ATTR(gather_data_sampling, 0444, cpu_show_gds, NULL); static DEVICE_ATTR(spec_rstack_overflow, 0444, cpu_show_spec_rstack_overflow, NULL); static DEVICE_ATTR(reg_file_data_sampling, 0444, cpu_show_reg_file_data_sampling, NULL); static DEVICE_ATTR(indirect_target_selection, 0444, cpu_show_indirect_target_selection, NULL); +static DEVICE_ATTR(tsa, 0444, cpu_show_tsa, NULL); static struct attribute *cpu_root_vulnerabilities_attrs[] = { &dev_attr_meltdown.attr, @@ -633,6 +639,7 @@ static struct attribute *cpu_root_vulnerabilities_attrs[] = { &dev_attr_spec_rstack_overflow.attr, &dev_attr_reg_file_data_sampling.attr, &dev_attr_indirect_target_selection.attr, + &dev_attr_tsa.attr, NULL }; |