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| author | David Kaplan <david.kaplan@amd.com> | 2025-06-25 10:58:05 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-06-26 13:32:31 +0200 |
| commit | 98b5dab4d22181c931f2bf63c060416badbb49ab (patch) | |
| tree | 8837530b7a6d4f0c0286f50a55b476a7ae7b7eea /rust/helpers/wait.c | |
| parent | ff54ae7314962699749869a3475da7a702ae991a (diff) | |
x86/bugs: Clean up SRSO microcode handling
SRSO microcode only exists for Zen3/Zen4 CPUs. For those CPUs, the microcode
is required for any mitigation other than Safe-RET to be effective. Safe-RET
can still protect user->kernel and guest->host attacks without microcode.
Clarify this in the code and ensure that SRSO_MITIGATION_UCODE_NEEDED is
selected for any mitigation besides Safe-RET if the required microcode isn't
present.
Signed-off-by: David Kaplan <david.kaplan@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250625155805.600376-4-david.kaplan@amd.com
Diffstat (limited to 'rust/helpers/wait.c')
0 files changed, 0 insertions, 0 deletions