Thread (85 messages) 85 messages, 12 authors, 2016-01-11

Re: [Xen-devel] [PATCH v2 34/34] xen/io: use virt_xxx barriers

From: David Vrabel <hidden>
Date: 2016-01-04 11:32:38
Also in: linux-arch, linux-arm-kernel, linux-s390, linux-sh, linux-um, linuxppc-dev, lkml, sparclinux 

On 31/12/15 19:10, Michael S. Tsirkin wrote:
include/xen/interface/io/ring.h uses
full memory barriers to communicate with the other side.

For guests compiled with CONFIG_SMP, smp_wmb and smp_mb
would be sufficient, so mb() and wmb() here are only needed if
a non-SMP guest runs on an SMP host.

Switch to virt_xxx barriers which serve this exact purpose.
Acked-by: David Vrabel <redacted>

David
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help