SYS_APIAKEYLO_EL1 27 arch/arm64/include/asm/kvm_ptrauth.h mrs_s \reg1, SYS_APIAKEYLO_EL1 SYS_APIAKEYLO_EL1 46 arch/arm64/include/asm/kvm_ptrauth.h msr_s SYS_APIAKEYLO_EL1, \reg1