diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-06-03 08:41:39 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-17 00:09:08 +1000 |
| commit | 863771a28e27dc9eaeaa88cea300370d032f0e0f (patch) | |
| tree | a2b744fc7635c80ff653043735b35dea37c63dff /arch/powerpc/include/asm/book3s | |
| parent | 7235bb3593781ed022d0714a73c2c0d8eb8a835f (diff) | |
powerpc/32s: Convert switch_mmu_context() to C
switch_mmu_context() does things that can easily be done in C.
For updating user segments, we have update_user_segments().
As mentionned in commit b5efec00b671 ("powerpc/32s: Move KUEP
locking/unlocking in C"), update_user_segments() has the loop
unrolled which is a significant performance gain.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/05c0875ad8220c03452c3a334946e207c6ca04d6.1622708530.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/book3s')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/32/kup.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/kup.h b/arch/powerpc/include/asm/book3s/32/kup.h index 83aa0dde50d6..618ffc8e4ee9 100644 --- a/arch/powerpc/include/asm/book3s/32/kup.h +++ b/arch/powerpc/include/asm/book3s/32/kup.h @@ -7,6 +7,11 @@ #ifndef __ASSEMBLY__ +static __always_inline bool kuap_is_disabled(void) +{ + return !IS_ENABLED(CONFIG_PPC_KUAP); +} + static __always_inline bool kuep_is_disabled(void) { return !IS_ENABLED(CONFIG_PPC_KUEP); |