From mboxrd@z Thu Jan  1 00:00:00 1970
From: Roger Pau Monne <roger.pau@citrix.com>
Subject: Re: Xen 4.2 TODO / Release
Date: Fri, 1 Jun 2012 13:13:05 +0100
Message-ID: <4FC8B1D1.1080801@citrix.com>
References: <1338197010.14158.37.camel@zakaz.uk.xensource.com>
	<4FC88DFF.70807@citrix.com>
	<alpine.DEB.2.00.1206011218310.26786@kaball-desktop>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <alpine.DEB.2.00.1206011218310.26786@kaball-desktop>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>, xen-devel <xen-devel@lists.xen.org>
List-Id: xen-devel@lists.xenproject.org

Stefano Stabellini wrote:
> On Fri, 1 Jun 2012, Roger Pau Monne wrote:
>> * qemu-upstream for NetBSD: I'm currently working on this. It compiles
>> but VGA memory mapping seems to be wrong, and qemu gets a segfault when
>> trying to write to it.
>
> You might have to check the implementation of xc_domain_add_to_physmap
> on NetBSD. On the QEMU side xen_add_to_physmap is the relevant function.
> However I cannot see how it would be different from
> qemu-xen-traditional.

Well my description was not completely accurate, when the memory address 
is retrieved for the first time (vga.c:2225), qemu can write to it, but 
after some point (don't know exactly yet), the userspace process looses 
access to that memory region, and gets a segfault.