On 12/03/18 16:32, Wei Liu wrote:
On Sun, Mar 11, 2018 at 07:59:16PM +0000, Julien Grall wrote:
Hi Andrew,

On 03/09/2018 01:18 PM, Andrew Cooper wrote:
ARM guests are HVM and have hardware assisted paging.  There are no PV guests
or shadow paging, and all other creation flags are x86 specific.

Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
CC: Stefano Stabellini <sstabell...@kernel.org>
CC: Julien Grall <julien.gr...@arm.com>
CC: Ian Jackson <ian.jack...@eu.citrix.com>
CC: Wei Liu <wei.l...@citrix.com>

RFC.  This is untested, but I noticed it when putting together the preceeding
patch.  There is a moderate chance that this will cause things to explode
because of how libxl handles ARM guest construction, but something along these
lines is the right thing to do.

Tools and hypervisor are considering ARM guests as PV. So this patch is
going to break boot. There are an action (XEN-102) to move ARM guests to
behave more like PVH from the tools POV. I am not sure when I will have time
to look at it thought.

For the time being, I am wondering if we could override the flags for Arm in
the toolstack?

Is that necessary? I don't think the rest of this series will break ARM
at first glance.

AFAICT, the rest of the series will not break ARM. So I think it would be fine to just drop this patch for the time being.

Julien Grall

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