On Sun, Sep 10, 2023 at 5:16 PM Guo Ren <guoren@xxxxxxxxxx> wrote: > > On Sun, Sep 10, 2023 at 4:58 PM Conor Dooley <conor@xxxxxxxxxx> wrote: > > > > On Sun, Sep 10, 2023 at 04:28:54AM -0400, guoren@xxxxxxxxxx wrote: > > > > > Changlog: > > > V11: > > > - Based on Leonardo Bras's cmpxchg_small patches v5. > > > - Based on Guo Ren's Optimize arch_spin_value_unlocked patch v3. > > > - Remove abusing alternative framework and use jump_label instead. > > > > btw, I didn't say that using alternatives was the problem, it was > > abusing the errata framework to perform feature detection that I had > > a problem with. That's not changed in v11. > I've removed errata feature detection. The only related patches are: > - riscv: qspinlock: errata: Add ERRATA_THEAD_WRITE_ONCE fixup > - riscv: qspinlock: errata: Enable qspinlock for T-HEAD processors And this one: - riscv: Use Zicbop in arch_xchg when available > > Which one is your concern? Could you reply on the exact patch thread? Thx. > > > > > A stronger forward progress guarantee is not an erratum, AFAICT. > Sorry, there is no erratum of "stronger forward progress guarantee" in the V11. > > > > > > - Introduce prefetch.w to improve T-HEAD processors' LR/SC forward progress > > > guarantee. > > > - Optimize qspinlock xchg_tail when NR_CPUS >= 16K. > > > > -- > Best Regards > Guo Ren -- Best Regards Guo Ren
