Hi Thomas, On Fri, 08 Dec 2023 10:31:20 +0100, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > On Thu, Dec 07 2023 at 20:54, Jacob Pan wrote: > > On Wed, 06 Dec 2023 17:33:28 +0100, Thomas Gleixner <tglx@xxxxxxxxxxxxx> > > wrote: > >> On Sat, Nov 11 2023 at 20:16, Jacob Pan wrote: > >> u32 rsvd[6]; > >> } __aligned(64); > >> > > It seems bit-fields cannot pass type check. I got these compile error. > > And why are you telling me that instead if simply fixing it? My point is that I am not sure this change is worthwhile unless I don't do the per CPU pointer check. gcc cannot take bit-field address afaik. So the problem is that with this bit-field change we don't have individual members anymore to check pointers. e.g. ./include/linux/percpu-defs.h:363:20: error: cannot take address of bit-field ‘nv’ 363 | __verify_pcpu_ptr(&(variable)); Thanks, Jacob
