diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-06-17 21:42:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-04 09:34:52 +0200 |
| commit | 0e13274bcb81c06f537ba2c13e7fce3ba46a780c (patch) | |
| tree | bac451d712df113c890abcde0c9a4a5d7fe64456 /include/linux/timerqueue.h | |
| parent | ce41b6472bf3d24c338253fd970677214c82b1f8 (diff) | |
powerpc/32s: fix suspend/resume when IBATs 4-7 are used
commit 6ecb78ef56e08d2119d337ae23cb951a640dc52d upstream.
Previously, only IBAT1 and IBAT2 were used to map kernel linear mem.
Since commit 63b2bc619565 ("powerpc/mm/32s: Use BATs for
STRICT_KERNEL_RWX"), we may have all 8 BATs used for mapping
kernel text. But the suspend/restore functions only save/restore
BATs 0 to 3, and clears BATs 4 to 7.
Make suspend and restore functions respectively save and reload
the 8 BATs on CPUs having MMU_FTR_USE_HIGH_BATS feature.
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/timerqueue.h')
0 files changed, 0 insertions, 0 deletions