From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [PATCHv1] x86/xen/p2m: hint at the last populated P2M entry Date: Tue, 8 Sep 2015 18:02:29 +0100 Message-ID: <55EF14A5.9090001@citrix.com> References: <1441719372-3455-1-git-send-email-david.vrabel@citrix.com> <55EEFC20.10803@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZZMIA-0006J3-O2 for xen-devel@lists.xenproject.org; Tue, 08 Sep 2015 17:02:46 +0000 In-Reply-To: <55EEFC20.10803@suse.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Juergen Gross , David Vrabel , xen-devel@lists.xenproject.org Cc: Boris Ostrovsky List-Id: xen-devel@lists.xenproject.org On 08/09/15 16:17, Juergen Gross wrote: > > I'd suggest an update of arch/x86/include/asm/xen/interface.h regarding > a possible change of max_pfn. Something like: > > ... > * p2m_vaddr holds the virtual address of the linear p2m list. All > * entries in the range [0...max_pfn[ are accessible via this pointer. > + * max_pfn is allowed to be changed by the guest to reflect a change > + * of the highest used page frame. This header comes from Xen so I'll need to update it there first. David