This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-ia64-devel] [PATCH 0/16] make xenheap configurable unpinning xe

To: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Subject: Re: [Xen-ia64-devel] [PATCH 0/16] make xenheap configurable unpinning xenheap
From: Alex Williamson <alex.williamson@xxxxxx>
Date: Wed, 09 Jan 2008 10:34:35 -0700
Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 09 Jan 2008 09:34:48 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <20080109115615.GG32675%yamahata@xxxxxxxxxxxxx>
List-help: <mailto:xen-ia64-devel-request@lists.xensource.com?subject=help>
List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
List-post: <mailto:xen-ia64-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-ia64-devel>, <mailto:xen-ia64-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-ia64-devel>, <mailto:xen-ia64-devel-request@lists.xensource.com?subject=unsubscribe>
Organization: OSLO R&D
References: <20080107075233.GA13344%yamahata@xxxxxxxxxxxxx> <1199838353.7947.13.camel@lappy> <20080109115615.GG32675%yamahata@xxxxxxxxxxxxx>
Sender: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Wed, 2008-01-09 at 20:56 +0900, Isaku Yamahata wrote:
> Could you try again with the attached patch?
> It works with 16, 32, 64, 128, 256 and 512. But dom0 panics with 1024.
> (The test box is tiger2 with 2GB memory.)
> 1GB xenheap requirement seems unlikely (at least for now I think)
> so that I leave it unfixed.

   Yes, that seems to fix it.  Thanks.  I'm also only able to go up to
512 even though the system has quite a lot of RAM.  I hang after this
when trying 1024:

(XEN) vm buffer size: 1048576
(XEN) vm_buffer: 0xf4000000049f0000

I also tried booting an HP cellular system with a NUMA memory config
with these patches.  If I specify xenheap_megabytes=128 I can get it to
boot now.  However, if I turn the "NUMA-ness" dial up too high (making
more of the memory appear local to the node), p2m gets unhappy and I see
"p2m_size != page_size".  Probably an unrelated problem, but just an
FYI.  Thanks,


Alex Williamson                             HP Open Source & Linux Org.

Xen-ia64-devel mailing list