[GIT PULL] RISC-V Fixes for 5.8-rc6

From: Palmer Dabbelt
Date: Sat Jul 18 2020 - 13:35:51 EST


The following changes since commit 11ba468877bb23f28956a35e896356252d63c983:

Linux 5.8-rc5 (2020-07-12 16:34:50 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-5.8-rc6

for you to fetch changes up to 38b7c2a3ffb1fce8358ddc6006cfe5c038ff9963:

RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw (2020-07-17 09:28:35 -0700)

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RISC-V Fixes for 5.8-rc6

I have two fixes:

* 16KiB kernel stacks on rv64, which fixes a lot of crashes.
* Rolling an mmiowb() into the scheduled, which when combined with Will's fix
to the mmiowb()-on-spinlock should fix the PREEMPT issues we've been seeing.

----------------------------------------------------------------
Andreas Schwab (1):
riscv: use 16KB kernel stack on 64-bit

Palmer Dabbelt (1):
RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw

arch/riscv/include/asm/barrier.h | 10 +++++++++-
arch/riscv/include/asm/thread_info.h | 4 ++++
2 files changed, 13 insertions(+), 1 deletion(-)