arm64: Switch to PMR masking when starting CPUs

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Once the boot CPU has been prepared or a new secondary CPU has been
brought up, use ICC_PMR_EL1 to mask interrupts on that CPU and clear
PSR.I bit.

Since ICC_PMR_EL1 is initialized at CPU bringup, avoid overwriting
it in the GICv3 driver.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

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Julien Thierry 2019-01-31 14:58:55 +00:00 • committed by Catalin Marinas

parent b5cf607370

commit e793218838

2 changed files with 33 additions and 1 deletions

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26

arch/arm64/kernel/smp.c

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8

drivers/irqchip/irq-gic-v3.c

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