x86/bugs: Add attack vector controls for L1TF
authorDavid Kaplan <david.kaplan@amd.com>
Mon, 7 Jul 2025 18:33:11 +0000 (13:33 -0500)
committerBorislav Petkov (AMD) <bp@alien8.de>
Fri, 11 Jul 2025 15:56:41 +0000 (17:56 +0200)
commit2f970a526975f4437bdc9a4ba550ecc7e66d861d
treec081fcd3cfc8101531e13fc7ec03b42a733a5f01
parentfdf99228e2f4e0486dc629e87fcece42abfe3f9c
x86/bugs: Add attack vector controls for L1TF

Use attack vector controls to determine if L1TF mitigation is required.

Disable SMT if cross-thread protection is desired.

Signed-off-by: David Kaplan <david.kaplan@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250707183316.1349127-17-david.kaplan@amd.com
arch/x86/kernel/cpu/bugs.c