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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-06-17 21:42:14 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-06-19 20:05:07 +1000 |
| commit | 6ecb78ef56e08d2119d337ae23cb951a640dc52d (patch) | |
| tree | a5109e328f20f64875532139afa527abef650e8d /arch/powerpc/mm | |
| parent | 8d0f1e05ab16c4bd628ddaefd20b94ffb36d799c (diff) | |
| download | linux-6ecb78ef56e08d2119d337ae23cb951a640dc52d.tar.bz2 | |
powerpc/32s: fix suspend/resume when IBATs 4-7 are used
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>
Diffstat (limited to 'arch/powerpc/mm')
0 files changed, 0 insertions, 0 deletions