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Re: [PATCH V4] libxl: arm: Add grant_usage parameter for virtio devices
- To: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
- From: George Dunlap <george.dunlap@xxxxxxxxx>
- Date: Fri, 21 Jul 2023 09:31:56 +0100
- Cc: xen-devel@xxxxxxxxxxxxx, Juergen Gross <jgross@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Nick Rosbrook <rosbrookn@xxxxxxxxx>, Wei Liu <wl@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: Fri, 21 Jul 2023 08:32:32 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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>
Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Golang bits:
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