MIPS: Loongson64: SMP: Fix up play_dead jump indicator

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In play_dead function, the whole 64-bit PC mailbox was used as a indicator
to determine if the master core had written boot jump information.

However, after we introduced CSR mailsend, the hardware will not guarante
an atomic write for the 64-bit PC mailbox. Thus we have to use the lower
32-bit which is written at the last as the jump indicator instead.

Signed-off-by: Lu Zeng <zenglu@loongson.cn>
Signed-off-by: Jun Yi <yijun@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

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Tiezhu Yang 2020-11-03 15:12:04 +08:00 • committed by Thomas Bogendoerfer

parent fed4955f30

commit 381ad3843b

1 changed files with 2 additions and 1 deletions

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arch/mips/loongson64/smp.c

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