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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-07-07 17:08:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-07-07 17:08:36 -0700 |
| commit | 6e9128ff9d8113ef208e5ec82573b96ead100072 (patch) | |
| tree | e797347f1e721f8b3893ed2a2af44265e6c6ba9f /drivers/base | |
| parent | d7b8f8e20813f0179d8ef519541a3527e7661d3a (diff) | |
| parent | 8e786a85c0a3c0fffae6244733fb576eeabd9dec (diff) | |
| download | linux-6e9128ff9d8113ef208e5ec82573b96ead100072.tar.gz linux-6e9128ff9d8113ef208e5ec82573b96ead100072.tar.bz2 linux-6e9128ff9d8113ef208e5ec82573b96ead100072.zip | |
Merge tag 'tsa_x86_bugs_for_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU speculation fixes from Borislav Petkov:
"Add the mitigation logic for Transient Scheduler Attacks (TSA)
TSA are new aspeculative side channel attacks related to the execution
timing of instructions under specific microarchitectural conditions.
In some cases, an attacker may be able to use this timing information
to infer data from other contexts, resulting in information leakage.
Add the usual controls of the mitigation and integrate it into the
existing speculation bugs infrastructure in the kernel"
* tag 'tsa_x86_bugs_for_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/process: Move the buffer clearing before MONITOR
x86/microcode/AMD: Add TSA microcode SHAs
KVM: SVM: Advertise TSA CPUID bits to guests
x86/bugs: Add a Transient Scheduler Attacks mitigation
x86/bugs: Rename MDS machinery to something more generic
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/cpu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 7779ab0ca7ce..efc575a00edd 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -602,6 +602,7 @@ CPU_SHOW_VULN_FALLBACK(reg_file_data_sampling); CPU_SHOW_VULN_FALLBACK(ghostwrite); CPU_SHOW_VULN_FALLBACK(old_microcode); CPU_SHOW_VULN_FALLBACK(indirect_target_selection); +CPU_SHOW_VULN_FALLBACK(tsa); static DEVICE_ATTR(meltdown, 0444, cpu_show_meltdown, NULL); static DEVICE_ATTR(spectre_v1, 0444, cpu_show_spectre_v1, NULL); @@ -620,6 +621,7 @@ static DEVICE_ATTR(reg_file_data_sampling, 0444, cpu_show_reg_file_data_sampling static DEVICE_ATTR(ghostwrite, 0444, cpu_show_ghostwrite, NULL); static DEVICE_ATTR(old_microcode, 0444, cpu_show_old_microcode, 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, @@ -639,6 +641,7 @@ static struct attribute *cpu_root_vulnerabilities_attrs[] = { &dev_attr_ghostwrite.attr, &dev_attr_old_microcode.attr, &dev_attr_indirect_target_selection.attr, + &dev_attr_tsa.attr, NULL }; |