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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 15:50:47 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 05:22:10 +0300 |
| commit | b5efec00b671c5d7e9cb9e73a1d4925dd6ce8dcd (patch) | |
| tree | 99a5ab07a508cab6ee4943fd8b8d689b7c7c8e1a /arch/powerpc/include/asm/kup.h | |
| parent | a2b3e09ae41c71d27d9b8da9baf31e0d9a97b864 (diff) | |
| download | linux-b5efec00b671c5d7e9cb9e73a1d4925dd6ce8dcd.tar.xz | |
powerpc/32s: Move KUEP locking/unlocking in C
This can be done in C, do it.
Unrolling the loop gains approx. 15% performance.
From now on, prepare_transfer_to_handler() is only for
interrupts from kernel.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4eadd873927e9a73c3d1dfe2f9497353465514cf.1615552867.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/kup.h')
| -rw-r--r-- | arch/powerpc/include/asm/kup.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kup.h b/arch/powerpc/include/asm/kup.h index 7ec21af49a45..25671f711ec2 100644 --- a/arch/powerpc/include/asm/kup.h +++ b/arch/powerpc/include/asm/kup.h @@ -55,6 +55,14 @@ void setup_kuep(bool disabled); static inline void setup_kuep(bool disabled) { } #endif /* CONFIG_PPC_KUEP */ +#if defined(CONFIG_PPC_KUEP) && defined(CONFIG_PPC_BOOK3S_32) +void kuep_lock(void); +void kuep_unlock(void); +#else +static inline void kuep_lock(void) { } +static inline void kuep_unlock(void) { } +#endif + #ifdef CONFIG_PPC_KUAP void setup_kuap(bool disabled); #else |