irqchip/gic-v3: Switch to PMR masking before calling IRQ handler

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Mask the IRQ priority through PMR and re-enable IRQs at CPU level,
allowing only higher priority interrupts to be received during interrupt
handling.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
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 14:58:44 +00:00 • committed by Catalin Marinas

parent e99da7c6f5

commit 3f1f3234bc

3 changed files with 39 additions and 0 deletions

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17

arch/arm/include/asm/arch_gicv3.h

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17

arch/arm64/include/asm/arch_gicv3.h

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5

drivers/irqchip/irq-gic-v3.c

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