我正在当前处于aarcH32 EL2状态的Cortex A53上使用GICV3。
当我尝试读取ICC_HSRE时，得到一条未定义的指令，并且系统崩溃。
我正在使用的指令是
mrc p15, 4, r7, c12, c9, 5 @ ICC_HSRE
Any idea what is wrong here, and why I get an undefined instruction.
In aarch32 EL2, I am pretty sure this is the register that should be used to access the GIC System Register Enable Register?
