arm64: irqflags: Use ICC_PMR_EL1 for interrupt masking

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Instead disabling interrupts by setting the PSR.I bit, use a priority
higher than the one used for interrupts to mask them via PMR.

When using PMR to disable interrupts, the value of PMR will be used
instead of PSR.[DAIF] for the irqflags.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

This commit is contained in:

Julien Thierry 2019-01-31 14:58:50 +00:00 • committed by Catalin Marinas

parent 13b210ddf4

commit 4a503217ce

2 changed files with 83 additions and 28 deletions

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11

arch/arm64/include/asm/efi.h

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100

arch/arm64/include/asm/irqflags.h

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