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Re: [PATCH V5 1/3] xen/arm: Introduce gpaddr_bits field to struct xen_arch_domainconfig
- To: Oleksandr <olekstysh@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 8 Oct 2021 14:36:51 +0200
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 08 Oct 2021 12:37:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.10.2021 12:25, Oleksandr wrote:
> Just a quick question. What do you think can XEN_DOMCTL_getdomaininfo be
> reused to retrieve gpaddr_bits? I don't see why not at the moment, but
> maybe there are some implications/concerns which are invisible to me.
>
> I see that arch_get_domain_info() is present, so the field will be
> common, and each arch will write a value it considers
> appropriate. This could be a good compromise to not add an extra domctl
> and to not alter domain_create.
Technically I think it could be reused. What I'm less certain of is
whether the specific piece of information is a good fit there.
Jan
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