diff options
| author | Borislav Petkov <bp@kernel.org> | 2025-07-15 15:37:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-17 19:28:00 +0300 |
| commit | 78192f511f401af644e6ccb7c02bc1ce39092851 (patch) | |
| tree | 89d84807da89ad586136a6575e3c3d03f8686ca0 /drivers/base | |
| parent | b9d08aebbe1859bbca5600fd1220b2ffa703df29 (diff) | |
| download | linux-78192f511f401af644e6ccb7c02bc1ce39092851.tar.xz | |
x86/bugs: Add a Transient Scheduler Attacks mitigation
From: "Borislav Petkov (AMD)" <bp@alien8.de>
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')
| -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 0b238634d462..377d8837e2b1 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -603,6 +603,11 @@ 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); @@ -618,6 +623,7 @@ 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, @@ -635,6 +641,7 @@ 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 }; |