SYS_APGAKEYHI_EL1 40 arch/arm64/include/asm/kvm_ptrauth.h mrs_s \reg2, SYS_APGAKEYHI_EL1 SYS_APGAKEYHI_EL1 59 arch/arm64/include/asm/kvm_ptrauth.h msr_s SYS_APGAKEYHI_EL1, \reg2