Re: [Xen-devel] [V9 3/3] Differentiate IO/mem resources tracked by ioreq server

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Shuai Ruan [mailto:shuai.ruan@xxxxxxxxxxxxxxx]
> Sent: Tuesday, December 15, 2015 10:05 AM
> 
> From: Yu Zhang <yu.c.zhang@xxxxxxxxxxxxxxx>
> 
> Currently in ioreq server, guest write-protected ram pages are
> tracked in the same rangeset with device mmio resources. Yet
> unlike device mmio, which can be in big chunks, the guest write-
> protected pages may be discrete ranges with 4K bytes each. This
> patch uses a seperate rangeset for the guest ram pages.
> 
> Note: Previously, a new hypercall or subop was suggested to map
> write-protected pages into ioreq server. However, it turned out
> handler of this new hypercall would be almost the same with the
> existing pair - HVMOP_[un]map_io_range_to_ioreq_server, and there's
> already a type parameter in this hypercall. So no new hypercall
> defined, only a new type is introduced.
> 
> Signed-off-by: Yu Zhang <yu.c.zhang@xxxxxxxxxxxxxxx>
> Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> Signed-off-by: Shuai Ruan <shuai.ruan@xxxxxxxxxxxxxxx>

Reviewd-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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