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(parent: 6728b54) | patch
arm64: Save and restore OSDLR_EL1 across suspend/resume
authorJean-Philippe Brucker <jean-philippe.brucker@arm.com>
Mon, 8 Apr 2019 17:17:19 +0000 (18:17 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 21 May 2019 16:50:14 +0000 (18:50 +0200)
commitdffad3e47c5ae36046b8275f158bad959a27d534
treeea21eaf77145f13acd23fcd68aef3ed0470caff6tree | snapshot (tar.gz zip)
parent6728b5409e1f35ec371a9eac21ca13fe86fa6056commit | diff
arm64: Save and restore OSDLR_EL1 across suspend/resume

commit 827a108e354db633698f0b4a10c1ffd2b1f8d1d0 upstream.

When the CPU comes out of suspend, the firmware may have modified the OS
Double Lock Register. Save it in an unused slot of cpu_suspend_ctx, and
restore it on resume.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm64/mm/proc.S diff | blob | blame | history