On Tue, Aug 25, 2020 at 6:44 AM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > On Fri, Aug 21 2020 at 11:35, Brian Gerst wrote: > > On Fri, Aug 21, 2020 at 10:22 AM Sean Christopherson > >> > .macro GET_PERCPU_BASE reg:req > >> > - ALTERNATIVE \ > >> > - "LOAD_CPU_AND_NODE_SEG_LIMIT \reg", \ > >> > - "RDPID \reg", \ > >> > >> This was the only user of the RDPID macro, I assume we want to yank that out > >> as well? > > > > No. That one should be kept until the minimum binutils version is > > raised to one that supports the RDPID opcode. > > The macro is unused and nothing in the kernel can use RDPID as we just > established. It is opencoded in vdso_read_cpunode(), but the RDPID macro can't be used there. So you are correct, it can be removed. -- Brian Gerst
