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Re: [Xen-users] Xen in a 32 way system

To: "Pablo Montesinos" <pablomontesinos@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx

From: "Jeff Lane" <sundowner225@xxxxxxxxx>

Date: Wed, 31 May 2006 14:37:04 -0400

Delivery-date: Wed, 31 May 2006 11:37:42 -0700

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List-id: Xen user discussion <xen-users.lists.xensource.com>

For what its worth, I have not tried Xen with FC5.. no time to do so... BUT I have run it with SLES successfully... If I understand the process correctly, to use Xen you need a xen aware kernel... in SLES there is a standard SLES kernel and a Xen aware SLES kernel...and you must boot the SLES Xen kernel to run Xend and have Xen functionality... Now, supposing that it is different for FC5 and the FC5 kernel itself IS xen aware, instead of going the SLES route and having seperate kernels (which would be a surprise as Red Hat seems to just love spinning a new kernel for every different feature), it still seems to me that the kernel you are booting is not set up to handle > 16 processors... that was fixed by Red Hat and the Linux community with the bigsmp stuff... that is why you can boot when you limit cpus to 16, but not when you try booting 32... if apic=bigsmp does not work on FC5, then there may be an FC5 equiv boot parameter that will enable bigsmp, IF the support is there in the FC5 kernel... Like I said previously, I have only tried this with SLES, so YMMV.... Jeff On 5/31/06, Pablo Montesinos <pablomontesinos@xxxxxxxxx> wrote:

But the problems I am experiencing are before I see dom0 boot, so I doubt
it's has anything to do with fedora core, no?

Thanks,
pablo

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