Searched hist:"6 ecb78ef56e08d2119d337ae23cb951a640dc52d" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/powerpc/platforms/powermac/ |
| H A D | sleep.S | diff 6ecb78ef56e08d2119d337ae23cb951a640dc52d Mon Jun 17 16:42:14 CDT 2019 Christophe Leroy <christophe.leroy@c-s.fr> 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>
|
| /openbmc/linux/arch/powerpc/kernel/ |
| H A D | swsusp_32.S | diff 6ecb78ef56e08d2119d337ae23cb951a640dc52d Mon Jun 17 16:42:14 CDT 2019 Christophe Leroy <christophe.leroy@c-s.fr> 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>
|