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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 12:50:48 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 13:22:11 +1100 |
| commit | ad2d2344771dabc5f0f14d85d5e7d2ddc613f385 (patch) | |
| tree | 87747558238a0c82274b1f727d9c9f485142c1b7 /arch/powerpc/include/asm/kup.h | |
| parent | powerpc/32s: Move KUEP locking/unlocking in C (diff) | |
| download | linux-dev-ad2d2344771dabc5f0f14d85d5e7d2ddc613f385.tar.xz linux-dev-ad2d2344771dabc5f0f14d85d5e7d2ddc613f385.zip | |
powerpc/64s: Make kuap_check_amr() and kuap_get_and_check_amr() generic
In preparation of porting powerpc32 to C syscall entry/exit,
rename kuap_check_amr() and kuap_get_and_check_amr() as
kuap_assert_locked() and kuap_get_and_assert_locked(), and move in the
generic asm/kup.h the stub for when CONFIG_PPC_KUAP is not selected.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f82614d9b17b83abd739aa18fc08811815d0c2e3.1615552867.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/kup.h')
| -rw-r--r-- | arch/powerpc/include/asm/kup.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/kup.h b/arch/powerpc/include/asm/kup.h index 25671f711ec2..aa5f77459311 100644 --- a/arch/powerpc/include/asm/kup.h +++ b/arch/powerpc/include/asm/kup.h @@ -74,7 +74,15 @@ bad_kuap_fault(struct pt_regs *regs, unsigned long address, bool is_write) return false; } -static inline void kuap_check_amr(void) { } +static inline void kuap_assert_locked(void) { } +static inline void kuap_save_and_lock(struct pt_regs *regs) { } +static inline void kuap_user_restore(struct pt_regs *regs) { } +static inline void kuap_kernel_restore(struct pt_regs *regs, unsigned long amr) { } + +static inline unsigned long kuap_get_and_assert_locked(void) +{ + return 0; +} /* * book3s/64/kup-radix.h defines these functions for the !KUAP case to flush |