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(parent: e291b6d) | patch
powerpc/32: Prepare for Kernel Userspace Access Protection
authorChristophe Leroy <christophe.leroy@c-s.fr>
Mon, 11 Mar 2019 08:30:31 +0000 (08:30 +0000)
committerMichael Ellerman <mpe@ellerman.id.au>
Sun, 21 Apr 2019 13:11:46 +0000 (23:11 +1000)
commite2fb9f5444312fd01627c84a3e018c1fe8ac6ebb
treed199c5ba49c2e30fff0d9722a4522b28c5f6959ftree | snapshot
parente291b6d575bc6e4d1d36961b081be521a6c800d6commit | diff
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>
arch/powerpc/include/asm/kup.h diff | blob | history
arch/powerpc/kernel/entry_32.S diff | blob | history
arch/powerpc/platforms/Kconfig.cputype diff | blob | history
Domain: System / Kernel;