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| author | Josh Poimboeuf <[email protected]> | 2023-08-25 00:01:36 -0700 |
|---|---|---|
| committer | Sean Christopherson <[email protected]> | 2023-10-04 15:19:32 -0700 |
| commit | e47d86083c66525b89c7fc66cdd64d5937725563 (patch) | |
| tree | c7a2a4b5ef893299a54ced0955ac5406f6011777 /lib/test_fortify/write_overflow-strncpy.c | |
| parent | 6f0f23ef76be11bc6ace10df5e807f3542da8772 (diff) | |
KVM: x86: Add SBPB support
Add support for the AMD Selective Branch Predictor Barrier (SBPB) by
advertising the CPUID bit and handling PRED_CMD writes accordingly.
Note, like SRSO_NO and IBPB_BRTYPE before it, advertise support for SBPB
even if it's not enumerated by in the raw CPUID. Some CPUs that gained
support via a uCode patch don't report SBPB via CPUID (the kernel forces
the flag).
Signed-off-by: Josh Poimboeuf <[email protected]>
Link: https://lore.kernel.org/r/a4ab1e7fe50096d50fde33e739ed2da40b41ea6a.1692919072.git.jpoimboe@kernel.org
Co-developed-by: Sean Christopherson <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy.c')
0 files changed, 0 insertions, 0 deletions