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Re: [RFC PATCH] xen/kconfig: allow LATE_HWDOM config for ARM
- To: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Michal Orzel <michal.orzel@xxxxxxx>
- Date: Wed, 18 Dec 2024 12:04:14 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Wed, 18 Dec 2024 11:04:40 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi Daniel,
On 18/12/2024 02:17, Daniel P. Smith wrote:
>
>
>> On 17/12/2024 11:47, Sergiy Kibrik wrote:
>>> Allow to build ARM configuration with support for initializing
>>> hardware domain.
>>> On ARM it is only possible to start hardware domain in multiboot mode, so
>>> dom0less support is required. This is reflected by dependency on
>>> DOM0LESS_BOOT
>>> instead of directly depending on ARM config option.
>
>
> Just to make sure my assumption is correct, you are looking to do a
> multi-domain construction at boot time, with at least two domains. One
> of those two domains is the "control domain" and one is the "hardware
> domain", aka late hwdom except it's not constructed "late".
>
> If you want such a configuration, I would highly recommend you first
> enable setting flask labels via dom0less (assuming it is not there)
Speaking about dom0less and FLASK. A year ago, I did sent you (privately,
through
AMD hyperlaunch collab) my attempt to add minimal steps to enable setting FLASK
policy
for dom0less domUs. You then told me that you have a slightly different vision
on how it
should be done. Any update with that regard? TBH I though that you're going to
add this
support together with other hyperlaunch patches.
For others reference, I attach my patch created back then allowing to specify
FLASK labels
for boot-time domUs, which I used to assign different FLASK roles for them.
~Michal
Attachment:
dom0less-flask-support.patch
Description: Text document
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