| From | Julien Thierry <> | Subject | [PATCH v6 06/24] arm64: ptrace: Provide definitions for PMR values | Date | Mon, 12 Nov 2018 11:56:57 +0000 |
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Introduce fixed values for PMR that are going to be used to mask and unmask interrupts by priority. These values are chosent in such a way that a single bit (GIC_PMR_UNMASKED_BIT) encodes the information whether interrupts are masked or not.
Signed-off-by: Julien Thierry <julien.thierry@arm.com> Suggested-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> --- arch/arm64/include/asm/ptrace.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h index fce22c4..ce6998c 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -25,6 +25,12 @@ #define CurrentEL_EL1 (1 << 2) #define CurrentEL_EL2 (2 << 2) +/* PMR values used to mask/unmask interrupts */ +#define GIC_PRIO_IRQON 0xf0 +#define GIC_PRIO_STATUS_SHIFT 6 +#define GIC_PRIO_STATUS_BIT (1 << GIC_PRIO_STATUS_SHIFT) +#define GIC_PRIO_IRQOFF (GIC_PRIO_IRQON ^ GIC_PRIO_STATUS_BIT) + /* Additional SPSR bits not exposed in the UABI */ #define PSR_IL_BIT (1 << 20) -- 1.9.1
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