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| author | Mikhail Paulyshka <[email protected]> | 2025-05-24 14:53:19 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2025-07-08 19:33:26 +0000 |
| commit | 5b937a1ed64ebeba8876e398110a5790ad77407c (patch) | |
| tree | c1c451cb4fb65e10c4fbe32a1c0c76a3ada54b1a /lib/crypto/mpi/mpicoder.c | |
| parent | Linux 6.16-rc5 (diff) | |
| download | kernel-5b937a1ed64ebeba8876e398110a5790ad77407c.tar.gz kernel-5b937a1ed64ebeba8876e398110a5790ad77407c.zip | |
x86/rdrand: Disable RDSEED on AMD Cyan Skillfish
AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an error that
causes RDSEED to always return 0xffffffff, while RDRAND works correctly.
Mask the RDSEED cap for this CPU so that both /proc/cpuinfo and direct CPUID
read report RDSEED as unavailable.
[ bp: Move to amd.c, massage. ]
Signed-off-by: Mikhail Paulyshka <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Cc: <[email protected]>
Link: https://lore.kernel.org/[email protected]
Diffstat (limited to 'lib/crypto/mpi/mpicoder.c')
0 files changed, 0 insertions, 0 deletions