[Xen-ia64-devel] Re: PATCH[1/2] Self IO EMUlator (sioemu) - Hypervisor part

[Alex Williamson <alex.williamson@xxxxxx>]

On Tue, 2008-02-12 at 06:59 +0100, tgingold@xxxxxxx wrote:
> Hi,
> 
> these patches implements the self io emulator.  It's an hybrid domain: looks
> like PV from an external point of view but runs with VTI enabled.
> 
> All MMIO/IO writes/reads are reflected to the firmware, which converts the
> access to PV drivers requests.
> 
> The most difference with the previous patch is the loader, which is now
> fully integrated with PV loaders (only the image format change).

Hi Tristan,

   I haven't had a chance to try this yet, but has any resolution been
reached between this approach versus the HVM stub domain?  If I
understand correctly, they seem to have similar goals.  It seems like
Samuel has been making forward progress on the stub approach.  Does this
provide more functionality?  more performance?  less maintenance?  If we
take a different approach than x86, I want to make sure it's justified.
Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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