Subject: Re: [Xen-devel] [PATCH 3/8] x86/xen/p2m: Replace ACCESS_ONCE with READ_ONCE

From: David Vrabel <[email-masked]>
Date: Thu, 15 Jan 2015 10:43:40 +0000

On 15/01/15 08:58, Christian Borntraeger wrote:
> ACCESS_ONCE does not work reliably on non-scalar types. For
> example gcc 4.6 and 4.7 might remove the volatile tag for such
> accesses during the SRA (scalar replacement of aggregates) step
> (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)
> 
> Change the p2m code to replace ACCESS_ONCE with READ_ONCE.

Acked-by: David Vrabel <[email-masked]>

Let me know if you want me to merge this via the Xen tree.

David