]> git.baikalelectronics.ru Git - kernel.git/commit
arm64: smp: Handle errors reported by the firmware
authorSuzuki K Poulose <Suzuki.Poulose@arm.com>
Mon, 10 Dec 2018 18:07:33 +0000 (18:07 +0000)
committerWill Deacon <will.deacon@arm.com>
Mon, 10 Dec 2018 18:42:18 +0000 (18:42 +0000)
commit7af61241b74aa875a483f809650b508f33622c52
tree6a9aecc9726b7bb1b56d71201874f59ebfa70da9
parentb0c482daf1f389c6f07ea08fdacb20293c3afe56
arm64: smp: Handle errors reported by the firmware

The __cpu_up() routine ignores the errors reported by the firmware
for a CPU bringup operation and looks for the error status set by the
booting CPU. If the CPU never entered the kernel, we could end up
in assuming stale error status, which otherwise would have been
set/cleared appropriately by the booting CPU.

Reported-by: Steve Capper <steve.capper@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
arch/arm64/kernel/smp.c