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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-03-11 08:30:31 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-04-21 23:11:46 +1000 |
| commit | e2fb9f5444312fd01627c84a3e018c1fe8ac6ebb (patch) | |
| tree | d199c5ba49c2e30fff0d9722a4522b28c5f6959f /arch/powerpc/platforms/Kconfig.cputype | |
| parent | powerpc/32: Remove MSR_PR test when returning from syscall (diff) | |
| download | linux-dev-e2fb9f5444312fd01627c84a3e018c1fe8ac6ebb.tar.xz linux-dev-e2fb9f5444312fd01627c84a3e018c1fe8ac6ebb.zip | |
powerpc/32: Prepare for Kernel Userspace Access Protection
This patch adds ASM macros for saving, restoring and checking
the KUAP state, and modifies setup_32 to call them on exceptions
from kernel.
The macros are defined as empty by default for when CONFIG_PPC_KUAP
is not selected and/or for platforms which don't handle (yet) KUAP.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/Kconfig.cputype')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 5e53b9fd62aa..2e45a6e2bc99 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -373,7 +373,7 @@ config PPC_KUAP config PPC_KUAP_DEBUG bool "Extra debugging for Kernel Userspace Access Protection" - depends on PPC_HAVE_KUAP && PPC_RADIX_MMU + depends on PPC_HAVE_KUAP && (PPC_RADIX_MMU || PPC_32) help Add extra debugging for Kernel Userspace Access Protection (KUAP) If you're unsure, say N. |