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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-10-19 09:29:23 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-12-09 12:41:19 +0100 |
| commit | 937fb7003ee1f37faed1f1a4ece46e8a14863d92 (patch) | |
| tree | f75e83e40cf99ba19d199c20002671aefdcb745b /arch/powerpc/include/asm/nohash/32 | |
| parent | powerpc/kuap: Remove __kuap_assert_locked() (diff) | |
| download | linux-937fb7003ee1f37faed1f1a4ece46e8a14863d92.tar.xz linux-937fb7003ee1f37faed1f1a4ece46e8a14863d92.zip | |
powerpc/kuap: Add kuap_lock()
Add kuap_lock() and call it when entering interrupts from user.
It is called kuap_lock() as it is similar to kuap_save_and_lock()
without the save.
However book3s/32 already have a kuap_lock(). Rename it
kuap_lock_addr().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4437e2deb9f6f549f7089d45e9c6f96a7e77905a.1634627931.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/nohash/32')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/32/kup-8xx.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/kup-8xx.h b/arch/powerpc/include/asm/nohash/32/kup-8xx.h index 37fe4b32b658..c44d97751723 100644 --- a/arch/powerpc/include/asm/nohash/32/kup-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/kup-8xx.h @@ -20,6 +20,10 @@ static __always_inline bool kuap_is_disabled(void) return static_branch_unlikely(&disable_kuap_key); } +static inline void __kuap_lock(void) +{ +} + static inline void __kuap_save_and_lock(struct pt_regs *regs) { regs->kuap = mfspr(SPRN_MD_AP); |