如何在 aarch64 gicv3 中读取中断状态（活动，挂起，活动挂起，..）？
how to read interrupt status (active, pending, active-pending, ..) in aarch64 gicv3?
如何读取 aarch64 中特定 INTID 的中断状态？
我想知道 FIQ 中断（例如 INT 208）的状态（inactive/active/pending/active-pending）。
有“ARM® 通用中断控制器，体系结构规范”文档。
描述了GIC的寄存器结构，里面有你要找的信息
The GICD_ICACTIVERs provide a Clear-active bit for each interrupt that
the GIC supports. Writing to a Clear-active bit Deactivates the
corresponding interrupt. These registers are used when preserving and
restoring GIC state.
[31:0] Clear-active bits For each bit:
Reads
0 The corresponding interrupt is not activea.
1 The corresponding interrupt is active. <--- here
Writes
0 Has no effect.
1 Deactivates the corresponding interrupt, if
the interrupt is active. If the interrupt is already deactivated, the
write has no effect. After a write of 1 to this bit, a subsequent read
of the bit returns the value 0.
如何读取 aarch64 中特定 INTID 的中断状态？ 我想知道 FIQ 中断（例如 INT 208）的状态（inactive/active/pending/active-pending）。
有“ARM® 通用中断控制器，体系结构规范”文档。
描述了GIC的寄存器结构，里面有你要找的信息
The GICD_ICACTIVERs provide a Clear-active bit for each interrupt that the GIC supports. Writing to a Clear-active bit Deactivates the corresponding interrupt. These registers are used when preserving and restoring GIC state.
[31:0] Clear-active bits For each bit:
Reads
0 The corresponding interrupt is not activea.
1 The corresponding interrupt is active. <--- here
Writes
0 Has no effect.
1 Deactivates the corresponding interrupt, if the interrupt is active. If the interrupt is already deactivated, the write has no effect. After a write of 1 to this bit, a subsequent read of the bit returns the value 0.