Messages in this thread | | | Date | Thu, 12 Oct 2023 13:53:47 -0700 | Subject | Re: [PATCH v2 0/4] Introduce %rip-relative addressing to PER_CPU_VAR macro | From | Dave Hansen <> |
| |
On 10/12/23 13:12, Uros Bizjak wrote: > The last patch introduces (%rip) suffix and uses it for x86_64 target, > resulting in a small code size decrease: text data bss dec hex filename > 25510677 4386685 808388 30705750 1d48856 vmlinux-new.o 25510629 4386685 > 808388 30705702 1d48826 vmlinux-old.o
I feel like I'm missing some of the motivation here.
50 bytes is great and all, but it isn't without the cost of changing some rules and introducing potential PER_CPU_ARG() vs. PER_CPU_VAR() confusion.
Are there some other side benefits? What else does this enable?
| |