diff options
| author | David Kaplan <david.kaplan@amd.com> | 2025-07-07 13:33:05 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-07-11 17:56:41 +0200 |
| commit | 8c7261abcb7ad1df493773fd52ff3ddce37a25e6 (patch) | |
| tree | bd65f3bfa5a0b54f2162c3693381ed8b348f2208 | |
| parent | 71dc301c26e9503350cf4e736022cc1eb8e986a7 (diff) | |
x86/bugs: Add attack vector controls for GDS
Use attack vector controls to determine if GDS mitigation is required.
Signed-off-by: David Kaplan <david.kaplan@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250707183316.1349127-11-david.kaplan@amd.com
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index de0b5efb0652..e9227e4a9773 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -1030,12 +1030,15 @@ static void __init gds_select_mitigation(void) return; } - if (cpu_mitigations_off()) - gds_mitigation = GDS_MITIGATION_OFF; /* Will verify below that mitigation _can_ be disabled */ - - if (gds_mitigation == GDS_MITIGATION_AUTO) - gds_mitigation = GDS_MITIGATION_FULL; + if (gds_mitigation == GDS_MITIGATION_AUTO) { + if (should_mitigate_vuln(X86_BUG_GDS)) + gds_mitigation = GDS_MITIGATION_FULL; + else { + gds_mitigation = GDS_MITIGATION_OFF; + return; + } + } /* No microcode */ if (!(x86_arch_cap_msr & ARCH_CAP_GDS_CTRL)) { |