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Re: [PATCH V3.1] libxl: arm: Add grant_usage parameter for virtio devices
- To: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
- From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Date: Tue, 13 Jun 2023 11:48:17 +0100
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- Cc: <xen-devel@xxxxxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Vincent Guittot <vincent.guittot@xxxxxxxxxx>, <stratos-dev@xxxxxxxxxxxxxxxxxxx>, Alex Bennée <alex.bennee@xxxxxxxxxx>, Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>, Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>, Erik Schilling <erik.schilling@xxxxxxxxxx>
- Delivery-date: Tue, 13 Jun 2023 10:48:50 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Jun 13, 2023 at 11:32:16AM +0530, Viresh Kumar wrote:
> Currently, the grant mapping related device tree properties are added if
> the backend domain is not Dom0. While Dom0 is privileged and can do
> foreign mapping for the entire guest memory, it is still desired for
> Dom0 to access guest's memory via grant mappings and hence map only what
> is required.
>
> This commit adds the "grant_usage" parameter for virtio devices, which
> provides better control over the functionality.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
> V3->V3.1:
> - Print "0" or "1" in xenstore instead of "True" or "False" for grant_usage.
Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Thanks,
--
Anthony PERARD
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