On Wed, Jun 19, 2019 at 4:54 PM Julien Grall <[email protected]> wrote: > > > > On 6/19/19 9:07 AM, Guo Ren wrote: > > Hi Julien, > > Hi, > > > > > You forgot CCing C-SKY folks :P > > I wasn't aware you could be interested :). > > > > > Move arm asid allocator code in a generic one is a agood idea, I've > > made a patchset for C-SKY and test is on processing, See: > > https://lore.kernel.org/linux-csky/[email protected]/ > > > > If you plan to seperate it into generic one, I could co-work with you. > > Was the ASID allocator work out of box on C-Sky? Almost done, but one question: arm64 remove the code in switch_mm: cpumask_clear_cpu(cpu, mm_cpumask(prev)); cpumask_set_cpu(cpu, mm_cpumask(next));
Why? Although arm64 cache operations could affect all harts with CTC method of interconnect, I think we should keep these code for primitive integrity in linux. Because cpu_bitmap is in mm_struct instead of mm->context. In current csky's patches I've also removed the codes the same as arm64, but I'll add it back at next version. > If so, I can easily move the code in a generic place (maybe lib/asid.c). I think it's OK. Best Regards Guo Ren
