Re: [PATCH] enable PCI multiple-segments for pass-through device

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* Zhai, Edwin (edwin.zhai@xxxxxxxxx) wrote:
> These 2 patches enable optional parameter(default 0) - PCI segment(or  
> domain) besides BDF, when assigning PCI device to guest.
>
> Signed-off-by: Zhai Edwin <edwin.zhai@xxxxxxxxx>

Looks good.  For compatibility, an old userspace will zero the padding
and keep the default 0 segment when running w/ a new kernel, a new
userspace won't be able to pass a non-zero segment value to an old
kernel.  If that latter bit matters, need a capability to express this
change.  Looks like qemu-options.hx needs an update too.  Otherwise...

Acked-by: Chris Wright <chrisw@xxxxxxxxxxxx>
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