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RE: [Xen-devel] Xm-test fails to pass sanity checks in hvm mode

To: "Daniel Stekloff" <dsteklof@xxxxxxxxxx>, "Lynn Bendixsen" <lbendixs@xxxxxxxxxx>
Subject: RE: [Xen-devel] Xm-test fails to pass sanity checks in hvm mode
From: "Li, Xin B" <xin.b.li@xxxxxxxxx>
Date: Wed, 12 Apr 2006 05:59:32 +0800
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Thread-topic: [Xen-devel] Xm-test fails to pass sanity checks in hvm mode
>It won't boot an SMP kernel. I bet the default kernel you're building
>with is SMP, right? HVM doesn't support SMP yet, I believe, although
>Intel people are working on that. I haven't debugged any further but
>I've confirmed that an SMP kernel on the disk.img won't boot.

I'm not in the context, but still have some comments here :-).
Basically we *can* boot a SMP kernel in a UP VMX domain. To boot up a
SMP kernel, we need vcpus > 1, acpi = 1 and apic = 1 in the config file,
or you are just running a UP VMX domain.
Some old version Linux SMP kernel can *not* boot in a SMP VMX domain,
but the root cause is PAE support code, which is mixed with SMP code in
Linux kernel :-(, newer version Linux, like 2.6.12+, should work.
Actually we have a fix to this PAE issue, but more tests needed.


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