arm64: Save and restore OSDLR_EL1 across suspend/resume

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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>

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Jean-Philippe Brucker 2019-04-08 18:17:19 +01:00 • committed by Will Deacon

parent 6fda41bf12

commit 827a108e35

1 changed files with 18 additions and 16 deletions

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arch/arm64/mm/proc.S

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