How to understand ARMv8 'SEVL' instruction in spin-lock?

hi experts, ARMv7 spin-lock use 'WFE' instruction to wait for lock release and use 'SEV' in spin-unlock to notify all cores. but ARMv8 use 'SEVL; WFE' instructions in spin-lock, and no...
How to understand ARMv8 'SEVL' instruction in spin-lock?

hi experts, ARMv7 spin-lock use 'WFE' instruction to wait for lock release and use 'SEV' in spin-unlock to notify all cores. but ARMv8 use 'SEVL; WFE' instructions in spin-lock, and no...
Understanding ARM NEON instruction

hi i am trying to understand ARM NEON instruction and encountered with vqrdmulh instruction. i am particularly interested in saturation case in instruction i am not getting any case with saturation ....
Understanding ARM NEON instruction

hi i am trying to understand ARM NEON instruction and encountered with vqrdmulh instruction. i am particularly interested in saturation case in instruction i am not getting any case with saturation ....
how to understand ARMv8 exception level1 secure/non-secure MMU?

Hi Experts , ARMv8 MMU TTBRn_ELx registers are banked by exception level. In "DDI0487A_b_armv8_arm.pdf" page 1640, the controlling register of secure EL1&0 stage1 is TTBR0_EL1 and Non-secure...