From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: the ptwr cmpxchg fix Date: Fri, 19 Oct 2007 15:50:43 -0700 Message-ID: <471934C3.6030908@goop.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: xen-devel@lists.xensource.com, John Levon List-Id: xen-devel@lists.xenproject.org Keir Fraser wrote: > On 18/10/07 20:58, "John Levon" wrote: > > >> * To quote Jan Beulich: >> >> Subject: [Xen-devel] c/s 15147 change to struct vcpu_register_vcpu_info >> >> This changeset changed the layout of the structure, and 3.1 as well as >> 2.6.23 use the old layout, while 3.1.1 uses to new one. >> >> We don't use this on Solaris yet, however >> > > Since the old structure layout was never present in a stable release of Xen > (that operation was not supported at all in 3.1.0) this one doesn't really > belong on the incompatibility list. > I think the structure was present, but there was no implementation to back it up. It's remotely possible someone decided to implement the vcpu_info placement without ever testing it, but it seems unlikely. J