From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: Issue with ARM: Network doesn't work in the guest Date: Thu, 07 Nov 2013 23:03:55 -0800 Message-ID: <527C8CDB.6010603@linaro.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Stefano Stabellini , mail fetch Cc: julien.grall@citrix.com, stefano.stabellini@citrix.com, ian.campbell@citrix.com, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On 11/06/2013 10:12 AM, Stefano Stabellini wrote: > On Wed, 30 Oct 2013, mail fetch wrote: >> 2013/10/29, mail fetch : >>> Hi all, >>> >>> I just saw a know bug from wiki that network doesn't work in guest in >>> arndale board : >>> >>> Network doesn't work in the guest >>> >>> Contact: julien.grall@citrix.com >>> Status: In progress >>> Description: Network doesn't work in the guest when an ehternet cable is >>> plugged >>> References: http://pastebin.com/gEP3HdCg >>> >>> What's the latest status? >>> >>> best regards >>> Mail >>> >> >> Any comments? > > Sorry for the late reply. Usually we respond pretty quickly but you > caught us between Xen Developer Summit and Linaro Connect: most Xen > hackers were traveling. In fact Julien Grall is still AFK and he > is the one that knows the answer. > > I think that the 1:1 workaround in dom0 (that is having pseudo-physical > addresses == physical addresses for dom0) should fix it. Give a look at Actually it's not enough. The problem is because when the balloon driver will release a page, Xen will populate with a new allocated page. So it will break the 1:1 Workaround. The commit eee34edcd1daecb70560dfe23009af2e65f7d26d on my tree in xenbits (git://xenbits.xen.org/people/julieng/xen-unstable.git) aims to fix this issue. I will try to remember to update the wiki page monday when I will come back to the office. Stefano: A couple of weeks ago, you told me you plan to rework this commit for the swiotlb, is it still relevant? -- Julien Grall