Re: [PATCH v2 11/14] powerpc/64s: Clear/restore caller gprs in syscall interrupt/return
From: Segher Boessenkool <hidden>
Date: 2022-08-11 15:15:40
Hi! On Mon, Jul 25, 2022 at 04:31:11PM +1000, Rohan McLure wrote:
+ /* + * Zero user registers to prevent influencing speculative execution + * state of kernel code. + */ + NULLIFY_GPRS(5, 12) + NULLIFY_NVGPRS()
"Nullify" means "invalidate", which is not what this does or is for :-( Segher