From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: Re: [PATCH v5 6/9] libxc: create unmapped initrd in domain builder if supported Date: Wed, 25 Nov 2015 16:18:32 +0000 Message-ID: <20151125161832.GF15747@citrix.com> References: <1447335816-31772-1-git-send-email-jgross@suse.com> <1447335816-31772-7-git-send-email-jgross@suse.com> <5655DDDC.5000005@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <5655DDDC.5000005@oracle.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: Boris Ostrovsky Cc: Juergen Gross , wei.liu2@citrix.com, Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com, ian.jackson@eu.citrix.com, xen-devel@lists.xen.org, roger.pau@citrix.com List-Id: xen-devel@lists.xenproject.org On Wed, Nov 25, 2015 at 11:12:12AM -0500, Boris Ostrovsky wrote: > On 11/12/2015 08:43 AM, Juergen Gross wrote: > >In case the kernel of a new pv-domU indicates it is supporting an > >unmapped initrd, don't waste precious virtual space for the initrd, > >but allocate only guest physical memory for it. > > This patch breaks 32-bit pygrub. > This particular patch? We discovered a bug in mini-os that caused 32-bit pygrub to break withi this series. It's now fixed in mini-os upstream. Check Config.mk for mini-os commit that fixes the bug. > I am not 100% sure yet but it may be that only 64-bit guests are affected. > > With RHEL5 I get > initrd extends beyond end of memory (0x780080eda000 > 0x40000000) > But this is different from what we found. We need more information. My wild guess is RHEL5 advertise it supports unmapped initrd but it was buggy in some way. Wei. > > -boris