diff options
| author |   Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2021-10-06 01:55:24 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-10-07 19:52:58 +1100 |
| commit | 030905920f32e91a52794937f67434ac0b3ea41a (patch) | |
| tree | ccb93be5254bdac578b6f9a21194f61757a1a197 /arch/powerpc/include/asm | |
| parent | powerpc/bpf: Fix BPF_SUB when imm == 0x80000000 (diff) | |
| download | linux-dev-030905920f32e91a52794937f67434ac0b3ea41a.tar.xz linux-dev-030905920f32e91a52794937f67434ac0b3ea41a.zip | |
powerpc/security: Add a helper to query stf_barrier type
Add a helper to return the stf_barrier type for the current processor.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/3bd5d7f96ea1547991ac2ce3137dc2b220bae285.1633464148.git.naveen.n.rao@linux.vnet.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/security_features.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/security_features.h b/arch/powerpc/include/asm/security_features.h index 792eefaf230b..27574f218b37 100644 --- a/arch/powerpc/include/asm/security_features.h +++ b/arch/powerpc/include/asm/security_features.h @@ -39,6 +39,11 @@ static inline bool security_ftr_enabled(u64 feature) return !!(powerpc_security_features & feature); } +#ifdef CONFIG_PPC_BOOK3S_64 +enum stf_barrier_type stf_barrier_type_get(void); +#else +static inline enum stf_barrier_type stf_barrier_type_get(void) { return STF_BARRIER_NONE; } +#endif // Features indicating support for Spectre/Meltdown mitigations |