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Date: Fri, 25 Feb 2011 11:54:07 +0100
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH V10 06/15] xen: Add the Xen platform pci
	device
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Xen Devel <xen-devel@lists.xensource.com>, Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>, QEMU-devel <qemu-devel@nongnu.org>, Anthony Perard <anthony.perard@citrix.com>, Steven Smith <Steven.Smith@eu.citrix.com>

On 02/25/2011 10:58 AM, Ian Campbell wrote:
> >  Or it should just go away.  Guests can already write to 0xe9 and see
> >  the output on the host's "xm dmesg" ring and serial console.
>
> Only true if you have configured the guest log level to include debug
> messages.

If you can recompile QEMU to add DEBUG_PLATFORM, you can usually do that 
too.  To avoid recompilation, rather than a chardev it would be even 
better to keep it as a trace event.

Paolo