From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Singapore Citizen Mr. Teo En Ming (Zhang Enming)" Subject: Re: Cannot start Fedora 19 HVM domU with VGA passthru Date: Thu, 18 Jul 2013 22:41:24 +0800 Message-ID: <51E7FE94.4070404@gmail.com> References: <51E6B95E.3020500@gmail.com> "\"\\\"\\\\\\\"\\\\\\\\\\\\\\\"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"\\\\\\\"\\\"\"" "<51E7C633.6080005@gmail.com>\" "\\\"<6ea9f69987a517fe0b1eca8ff677ebf3@mail.shatteredsilicon.net>\\\\\\\"\\\"\"" "\"\\\"<51E7C9BB.6090909@gmail.com>\\\\\\\" <937f17404d3880088c5ccda6bf1d5ec6@mail.shatteredsilicon.net> <51E7D04E.2040700@gmail.com> \\\"<862077afc84754329c828dfec0504ad7@mail.shatteredsilicon.net>\\\\\\\"\\\" <51E7DFB5.9070607@gmail.com> <51E7E653.6090300@gmail.com>" <8c90a04f78fb9b079bb5146539229b9a@mail.shatteredsilicon.net>" <51E7EA12.1000508@gmail.com> <4d2b5bb7cb8390d609463e74225bb155@mail.shatteredsilicon.net> Reply-To: singapore.mr.teo.en.ming@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4d2b5bb7cb8390d609463e74225bb155@mail.shatteredsilicon.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Gordan Bobic Cc: xen-users@lists.xen.org, "Teo En Ming (Zhang Enming)" , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On 18/07/2013 21:55, Gordan Bobic wrote: > On Thu, 18 Jul 2013 21:13:54 +0800, "Singapore Citizen Mr. Teo En Ming > (Zhang Enming)" wrote: >> On 18/07/2013 21:04, Gordan Bobic wrote: >>> On Thu, 18 Jul 2013 20:57:55 +0800, "Singapore Citizen Mr. Teo En >>> Ming (Zhang Enming)" wrote: >>>> On 18/07/2013 20:35, Gordan Bobic wrote: >>>>> On Thu, 18 Jul 2013 20:29:41 +0800, "Singapore Citizen Mr. Teo En >>>>> Ming (Zhang Enming)" wrote: >>>>>> On 18/07/2013 20:03, Gordan Bobic wrote: >>>>>>> On Thu, 18 Jul 2013 19:23:58 +0800, "Singapore Citizen Mr. Teo >>>>>>> En Ming (Zhang Enming)" wrote: >>>>>>>> On 18/07/2013 19:02, Gordan Bobic wrote: >>>>>>>>> On Thu, 18 Jul 2013 18:55:55 +0800, "Singapore Citizen Mr. Teo >>>>>>>>> En Ming (Zhang Enming)" >>>>>>>>> wrote: >>>>>>>>>> On 18/07/2013 18:44, Gordan Bobic wrote: >>>>>>>>>>> On Thu, 18 Jul 2013 18:40:51 +0800, "Singapore Citizen Mr. >>>>>>>>>>> Teo En Ming (Zhang Enming)" >>>>>>>>>>> wrote: >>>>>>>>>>>> On 18/07/2013 18:29, Gordan Bobic wrote: >>>>>>>>>>>>> On Thu, 18 Jul 2013 18:20:08 +0800, "Singapore Citizen Mr. >>>>>>>>>>>>> Teo En Ming (Zhang Enming)" >>>>>>>>>>>>> wrote: >>>>>>>>>>>>>> On 18/07/2013 18:09, Gordan Bobic wrote: >>>>>>>>>>>>>>> On Thu, 18 Jul 2013 18:07:27 +0800, "Singapore Citizen >>>>>>>>>>>>>>> Mr. Teo En Ming (Zhang Enming)" >>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>> On 18/07/2013 16:46, Gordan Bobic wrote: >>>>>>>>>>>>>>>>> On Thu, 18 Jul 2013 16:37:34 +0800, "Singapore Citizen >>>>>>>>>>>>>>>>> Mr. Teo En Ming (Zhang Enming)" >>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Although Fedora 19 HVM domU with VGA passthrough >>>>>>>>>>>>>>>>>> cannot start, Debian >>>>>>>>>>>>>>>>>> 7.1.0 amd64 HVM domU with VGA passthrough can start. >>>>>>>>>>>>>>>>>> In Debian 7.1.0 >>>>>>>>>>>>>>>>>> amd64 HVM domU with VGA passthrough, Intel HD >>>>>>>>>>>>>>>>>> Graphics 4600 is listed >>>>>>>>>>>>>>>>>> in lspci -vvv. Please refer to lspci.txt. It is >>>>>>>>>>>>>>>>>> strange that no kernel >>>>>>>>>>>>>>>>>> module is being loaded for Intel HD Graphics 4600. >>>>>>>>>>>>>>>>>> There is no "Kernel >>>>>>>>>>>>>>>>>> driver in use" statement after VGA compatible >>>>>>>>>>>>>>>>>> controller: Intel >>>>>>>>>>>>>>>>>> Corporation Haswell Integrated Graphics Controller >>>>>>>>>>>>>>>>>> (rev 06) (prog-if >>>>>>>>>>>>>>>>>> 00 [VGA controller]). >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> No kernel driver is seen in lsmod. Please refer to >>>>>>>>>>>>>>>>>> lsmod.txt >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> When I tried to load the kernel module by executing >>>>>>>>>>>>>>>>>> "modprobe i915", >>>>>>>>>>>>>>>>>> it complains "no such device". >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> ERROR: could not insert 'i915': No such device >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> So is my Intel HD Graphics 4600 VGA Passthrough to >>>>>>>>>>>>>>>>>> Debian 7.1.0 amd64 >>>>>>>>>>>>>>>>>> HVM domU considered successful since the i915 driver >>>>>>>>>>>>>>>>>> cannot be loaded? >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Thank you very much. >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> If you have a driver in dom0 claiming the device >>>>>>>>>>>>>>>>> (other than the xen-pciback >>>>>>>>>>>>>>>>> driver), you cannot pass through that device. If you >>>>>>>>>>>>>>>>> do lspci -ccc on F19 >>>>>>>>>>>>>>>>> and you see the driver in use for that device being >>>>>>>>>>>>>>>>> something other than >>>>>>>>>>>>>>>>> xen-pciback, that would explain why you can't pass it >>>>>>>>>>>>>>>>> through. >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> Also, did you first do xl pci-assignable-add for that >>>>>>>>>>>>>>>>> device? This attempts >>>>>>>>>>>>>>>>> to detach the device from it's current driver but >>>>>>>>>>>>>>>>> doesn't always work >>>>>>>>>>>>>>>>> especially for GPUs. The only solution is blacklist >>>>>>>>>>>>>>>>> the driver for the >>>>>>>>>>>>>>>>> device in dom0. The downside is that you cannot run a >>>>>>>>>>>>>>>>> GUI in dom0 on that >>>>>>>>>>>>>>>>> device. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> I cannot start Fedora 19 HVM domU with VGA passthrough >>>>>>>>>>>>>>>> at all. Could >>>>>>>>>>>>>>>> you advise me on the workaround? >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> As for the Intel HD Graphics (i915) driver, I have it >>>>>>>>>>>>>>>> blacklisted in >>>>>>>>>>>>>>>> /etc/modprobe.d/blacklist.conf already. Please refer to >>>>>>>>>>>>>>>> attached >>>>>>>>>>>>>>>> blacklist.conf. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Have you confirm that no other driver is bound to the >>>>>>>>>>>>>>> device in lspci -vvv? >>>>>>>>>>>>>>> Also what version of Xen are you running on each of the >>>>>>>>>>>>>>> distros, and which >>>>>>>>>>>>>>> dom0 kernel? >>>>>>>>>>>>>> >>>>>>>>>>>>>> I have checked "lsmod | grep i915" and the command >>>>>>>>>>>>>> doesn't return >>>>>>>>>>>>>> anything, which means the kernel module i915 is not >>>>>>>>>>>>>> loaded in dom0. >>>>>>>>>>>>> >>>>>>>>>>>>> Check lspci -vvv,find the device in the output and look >>>>>>>>>>>>> for the lines that say: >>>>>>>>>>>>> Kernel driver in use: >>>>>>>>>>>>> Kernel modules: >>>>>>>>> >>>>>>>>> [...] >>>>>>>>> >>>>>>>>>>>> I have checked lspci -vvv in Ubuntu 13.04 dom0 and the >>>>>>>>>>>> Kernel driver >>>>>>>>>>>> in use is pciback for Intel HD Graphics 4600 IGD. >>>>>>>>>>>> >>>>>>>>>>>> As for Fedora 19 HVM domU, I don't know because I cannot >>>>>>>>>>>> start it. >>>>>>>>>>> >>>>>>>>>>> Starting is not required to do this. Do it before starting >>>>>>>>>>> the domU. >>>>>>>>>> >>>>>>>>>> Sorry, I don't understand what you're trying to say. >>>>>>>>> >>>>>>>>> On F19, don't worry about starting the domU. In dom0, do lspci >>>>>>>>> -vvv, >>>>>>>>> find the Intel graphics device in the output and find what kernel >>>>>>>>> driver / module are bound to it, if any. You can only pass >>>>>>>>> through >>>>>>>>> a PCI device that is connected to the xen pciback driver, and >>>>>>>>> even >>>>>>>>> then often only if no other driver had connected to the device >>>>>>>>> first >>>>>>>>> since that might leave it in an unknown state. >>>>>>>>> >>>>>>>> >>>>>>>> But I can only start Fedora 19 HVM domU with-out vga >>>>>>>> passthrough. I >>>>>>>> want to be able to start Fedora 19 HVM domU with vga passthrough. >>>>>>> >>>>>>> You are trying to get one step ahead of what I am talking about. >>>>>>> Forget domU for the moment. Before you can even begin thinking >>>>>>> about the domU you have to make sure the device is available >>>>>>> for assigning in dom0. If you have a driver bound to the device >>>>>>> in dom0 you cannot pass it through to domU. So forget domU until >>>>>>> you have actually confirmed there is no driver bound to the >>>>>>> device in dom0. >>>>>>> >>>>>>> What do the following two lines say for the device in lspci -vvv >>>>>>> in _dom0_ on Fedora: >>>>>>> Kernel driver in use: >>>>>>> Kernel modules: >>>>>>> >>>>>> I have attached the output of lspci -vvv in Ubuntu 13.04 dom0. The >>>>>> filename of the attachment is dom0-lspci.txt. >>>>> >>>>> You need to do this as root, otherwise some of the output is missing. >>>>> >>>>> And the dump from the machine where you have domU working isn't >>>>> useful, you need to post the same lspci dump from the system >>>>> where it _doesn't_ work. >>>>> >>>> >>>> I have attached the output of lspci -vvv as root in Ubuntu 13.04 >>>> dom0. The filename of the attachment is root-dom0-lspci.txt. >>> >>> Right, that is showing >>> Kernel driver in use: pciback >>> for the Intel VGA device. >>> >>> But that is expected, you said you have it working on Ubuntu. >>> You now need to make sure you have the same lspci output on >>> Fedora dom0 before you start the domU. >>> >> I think you are confused. I only have *one* dom0, which is the Ubuntu >> 13.04 dom0. I don't have any other dom0. >> >> What I am trying to do is to start Fedora 19 HVM domU in Ubuntu 13.04 >> dom0, but am unable to. >> >> Hope this clears everything. > > It does, thanks. I was under the impression you were dual booting dom0s > and one was letting you boot domU and the other wasn't. Apologies. > > Gordan > Dear Gordan, Do you know how to solve the problem of Fedora 19 HVM domU not starting up in Ubuntu 13.04 dom0 with Intel IGD VGA passthrough? -- Yours sincerely, Singapore Citizen Mr. Teo En Ming (Zhang Enming)