Re: [PATCH 00/34] arch: barrier cleanup + __smp_xxx barriers for virt

[David Miller]

From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Date: Wed, 30 Dec 2015 14:58:19 +0200

> -. Patch 1 documents the __smp APIs, and explains why they are
>    useful for virt

If virt is doing things like interacting with descriptors that are
shared with a (potentially SMP) host, why don't we just annotate those
specific cases?

The other memory barriers in the kernel do not matter for SMP'ness
when build UP.
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