diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-07-11 17:59:16 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-02 22:22:17 +1000 |
| commit | 6b289911c80d45fd8da3d24ea14706361381b78d (patch) | |
| tree | 4330e49e89da137fadd76346ba80bad19e3e5c0f /arch/powerpc/include/asm/feature-fixups.h | |
| parent | 38bb171b958480b484e8e980be76c7d3656881ea (diff) | |
powerpc/features: Add capability to update mmu features later
On powerpc32, features fixup is performed very early and that's too
early to read the cmdline and take into account 'nosmap' parameter.
On the other hand, no userspace access is performed that early and
KUAP feature fixup can be performed later.
Add a function to update mmu features. The function is passed a
mask with the features that can be updated.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/31b27ee2c9d338f4f82cd8cd69d6bff979495290.1689091022.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/feature-fixups.h')
| -rw-r--r-- | arch/powerpc/include/asm/feature-fixups.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h index ac605fc369c4..77824bd289a3 100644 --- a/arch/powerpc/include/asm/feature-fixups.h +++ b/arch/powerpc/include/asm/feature-fixups.h @@ -292,6 +292,7 @@ extern long __start___barrier_nospec_fixup, __stop___barrier_nospec_fixup; extern long __start__btb_flush_fixup, __stop__btb_flush_fixup; void apply_feature_fixups(void); +void update_mmu_feature_fixups(unsigned long mask); void setup_feature_keys(void); #endif |