From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ritu kaur Subject: Re: pci-passthrough and shared interrupts Date: Sun, 3 Oct 2010 09:41:55 -0700 Message-ID: References: <20100825223415.GA6326@phenom.dumpdata.com> <20100825234330.GA6588@phenom.dumpdata.com> <20100827140347.GA4454@phenom.dumpdata.com> <20101001134529.GA28639@dumpdata.com> <20101001155820.GA29323@dumpdata.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1004508727==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Konrad Rzeszutek Wilk , =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org --===============1004508727== Content-Type: multipart/alternative; boundary=000e0cd3274407ab9d0491b91b67 --000e0cd3274407ab9d0491b91b67 Content-Type: text/plain; charset=ISO-8859-1 Pasi, Installation/compilation of xen source on fedora core went through fine. I am facing an issue when dom0_mem is set to 1024M. During boot I get the message /********************* Panic on CPU 0 Not enough RAM for domain 0 allocation **********************/ Same thing happens when dom0_mem is set to 512M when dom0_mem is set to 256M, I get following message /*************************** Panic on CPU 0 Domain 0 allocation is too small for kernel image ****************************/ Is 8GB ram mandatory? In my machine it is 2GB ram, inputs appreciated. Thanks On Sun, Oct 3, 2010 at 9:07 AM, Ritu kaur wrote: > Thanks Konrad, I checked my old emails(back in March 2010) to see if I had > tried this combination when I was testing xcp. I did try this combination > and the problem I had faced was configuration errors due to IDE_DISK. I > couldn't get past this problem. Snippets below > > /********************************************************* > Thanks Konrad. > > > > I downloaded new code and still doesn't work(albeit different > problem). I > > will enumerate them below > > > > (Please note 1, 2 and 3 are seen with old xen/next as well). What > seemed > > simple testing of pci passthrough via config changes doesn't seem to > be > > the case. > > > > 1. mkinitrd doesn't work in xcp ddk. I get below errors > > > > mkinitrd -f ./initrd-2.6.32.ing 2.6.32 > > modinfo: could not find module ide-disk > > No module ide-disk found for kernel 2.6.32, aborting. > > > > ******************************************************************************************************************/ > > > > > On Fri, Oct 1, 2010 at 8:58 AM, Konrad Rzeszutek Wilk < > konrad.wilk@oracle.com> wrote: > >> On Fri, Oct 01, 2010 at 08:36:03AM -0700, Ritu kaur wrote: >> > Hi Konrad, >> > >> > Frankly, I am confused. XCP(which is similar to Citrix Xenserver but >> > open-source and newer-kernel) requires DDK to build a kernel image. If I >> > understand your suggestion correctly I should be able to >> > >> > 1. Take PVOPS kernel code, compile it in XCP DDK and load it into dom0 >> > 2. Take PVOPS kernel code, compile it in domU OS and load it into domU >> > >> > then, I should be able to get pci-passthrough + shared interrupts >> between >> > devices working correctly? Please clarify/confirm >> >> Yes. >> > > --000e0cd3274407ab9d0491b91b67 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Pasi,

Installation/compilation of xen source on fedora core went thr= ough fine. I am facing an issue when dom0_mem is set to 1024M. During boot = I get the message

/*********************
Panic on CPU 0
Not en= ough RAM for domain 0 allocation
**********************/

Same thing happens when dom0_mem is set to 5= 12M

when dom0_mem is set to 256M,=A0 I get following message

= /***************************
Panic on CPU 0
Domain 0 allocation is to= o small for kernel image
****************************/

Is 8GB ram mandatory? In my machine it= is 2GB ram, inputs appreciated.

Thanks


On Sun, Oct 3, 2010 at 9:07 AM, Ritu kaur <ritu.kaur.us@gmail.com> wrote:
Thanks Konrad, I checked my old emails(back in March 2010) to see if I had = tried this combination when I was testing xcp. I did try this combination a= nd the problem I had faced was configuration errors due to IDE_DISK. I coul= dn't get past this problem. Snippets below

/*********************************************************
Thanks Ko= nrad.
>
> =A0 =A0I downloaded new code and still doesn't work(albeit differe= nt problem). I
> =A0 =A0will enumerate them below
>
> =A0 =A0(Please note 1, 2 and 3 are seen with old xen/next as well). Wh= at seemed
> =A0 =A0simple testing of pci passthrough via config changes doesn'= t seem to be
> =A0 =A0the case.
>
> =A0 =A01. mkinitrd doesn't work in xcp ddk. I get below errors
>
> =A0 =A0mkinitrd -f ./initrd-2.6.32.ing 2.6.32
> =A0 =A0modinfo: could not find module ide-disk
> =A0 =A0No module ide-disk found for kernel 2.6.32, aborting.
>
***************************************************************************= ***************************************/




On Fri, Oct 1, 2010 at 8:58 AM, Konr= ad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:
On Fri, Oct 01, 2010 at 08:36:03AM -0700, Ritu kaur wrote:
> Hi Konrad,
>
> Frankly, I am confused. XCP(which is similar to Citrix Xenserver but > open-source and newer-kernel) requires DDK to build a kernel image. If= I
> understand your suggestion correctly I should be able to
>
> 1. Take PVOPS kernel code, compile it in XCP DDK and load it into dom0=
> 2. Take PVOPS kernel code, compile it in domU OS and load it into domU=
>
> then, I should be able to get pci-passthrough + shared interrupts betw= een
> devices working correctly? =A0Please clarify/confirm

Yes.


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