Re: [Xen-devel] [PATCH v2 06/13] public / x86: introduce __HYPERCALL_iommu_op

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Sat, Jul 07, 2018 at 12:05:19PM +0100, Paul Durrant wrote:
> This patch introduces the boilerplate for a new hypercall to allow a
> domain to control IOMMU mappings for its own pages.
> Whilst there is duplication of code between the native and compat entry
> points which appears ripe for some form of combination, I think it is
> better to maintain the separation as-is because the compat entry point
> will necessarily gain complexity in subsequent patches.
> 

Since this is a new op, why is there compatibility issue? Can we do away
with the compat entry point all together?

I haven't read the rest of this series, maybe it will become clearer
later.

Wei.

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