Palmer Dabbelt 35728cac17 RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw
[ Upstream commit 38b7c2a3ffb1fce8358ddc6006cfe5c038ff9963 ]

While digging through the recent mmiowb preemption issue it came up that
we aren't actually preventing IO from crossing a scheduling boundary.
While it's a bit ugly to overload smp_mb__after_spinlock() with this
behavior, it's what PowerPC is doing so there's some precedent.

Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-07-29 10:18:40 +02:00
..
2020-02-11 04:35:28 -08:00
2019-08-30 17:34:00 -07:00
2019-09-20 08:36:47 -07:00