| commit | e2fb9f5444312fd01627c84a3e018c1fe8ac6ebb | [log] [tgz] |
|---|---|---|
| author | Christophe Leroy <christophe.leroy@c-s.fr> | Mon Mar 11 08:30:31 2019 +0000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Sun Apr 21 23:11:46 2019 +1000 |
| tree | d199c5ba49c2e30fff0d9722a4522b28c5f6959f | |
| parent | e291b6d575bc6e4d1d36961b081be521a6c800d6 [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>