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Re: [Xen-devel] hvm guest direct kernel boot

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] hvm guest direct kernel boot
From: William Dauchy <wdauchy@xxxxxxxxx>
Date: Tue, 23 Aug 2011 23:31:12 +0200
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Hi Stefani,

Thank you for your reply.

On Tue, Aug 23, 2011 at 7:02 PM, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
> That has never been supported AFAIK.
> Of course we could accept patches to make it work.

Probably but there was config options to support this (loader +
kernel) and code in both xend and qemu-dm.

In upstream qemu, the code is present to support direct boot but the
xen implementation is quite different from the usual "qemu way", at
least for grabbing ram at start; see `pc_memory_init` which is
bypassed by `xen_enabled`.
I will see if I find time to patch the upstream qemu version.

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