diff options
| -rw-r--r-- | arch/arm64/include/asm/ptrace.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h index fce22c4b2f73..8b131bc8984d 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -25,6 +25,18 @@ #define CurrentEL_EL1 (1 << 2) #define CurrentEL_EL2 (2 << 2) +/* + * PMR values used to mask/unmask interrupts. + * + * GIC priority masking works as follows: if an IRQ's priority is a higher value + * than the value held in PMR, that IRQ is masked. Lowering the value of PMR + * means masking more IRQs (or at least that the same IRQs remain masked). + * + * To mask interrupts, we clear the most significant bit of PMR. + */ +#define GIC_PRIO_IRQON 0xf0 +#define GIC_PRIO_IRQOFF (GIC_PRIO_IRQON & ~0x80) + /* Additional SPSR bits not exposed in the UABI */ #define PSR_IL_BIT (1 << 20) |