Re: [Xen-devel] [RFC] hvm-stub for ia64

[tgingold@xxxxxxx]

Quoting Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>:

> That's the main difference between your approach (reimplement a
> firmware) and the approach being developped here at XenSource (embed
> qemu in a tiny stubdomain).  Your VMX work in Xen is most probably
> something useful, but reimplementing the hardware emulation support of
> qemu looks to me like duplicate work.

Of course it doesn't reimplement the emulation.  The current biggest emulation
is the IDE and I have copied ide.c from qemu and made almost no modification.

The advantage is my approach is no need for scheduling between two domains
for hardware emulation.  With the current hvm model, I reach the EFI prompt
in about 10sec.  With my hvmstub it took less than 2 seconds. Very pleasant
to use!

Tristan.

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