Merge tag 'riscv-for-linus-5.8-rc6' of...

Merge tag 'riscv-for-linus-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux into master

Pull RISC-V fixes from Palmer Dabbelt:
 "Two fixes:

   - 16KiB kernel stacks on rv64, which fixes a lot of crashes.

   - Rolling an mmiowb() into the scheduler, which when combined with
     Will's fix to the mmiowb()-on-spinlock should fix the PREEMPT
     issues we've been seeing"

* tag 'riscv-for-linus-5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw
  riscv: use 16KB kernel stack on 64-bit