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Re: [PATCH v6 02/11] xen: introduce CDF_directmap
- To: Julien Grall <julien@xxxxxxx>, Penny Zheng <penny.zheng@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 16 Feb 2022 10:34:50 +0100
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- Cc: Bertrand.Marquis@xxxxxxx, Wei.Chen@xxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, sstabellini@xxxxxxxxxx
- Delivery-date: Wed, 16 Feb 2022 09:34:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15.02.2022 21:26, Julien Grall wrote:
> (+ Jan)
>
> Hi Penny,
>
> I am CCing Jan to give him a chance to...
Thanks, but ...
> On 14/02/2022 03:19, Penny Zheng wrote:
>> diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h
>> index cfb0b47f13..24eb4cc7d3 100644
>> --- a/xen/include/xen/domain.h
>> +++ b/xen/include/xen/domain.h
>> @@ -31,6 +31,10 @@ void arch_get_domain_info(const struct domain *d,
>> /* CDF_* constant. Internal flags for domain creation. */
>> /* Is this a privileged domain? */
>> #define CDF_privileged (1U << 0)
>> +#ifdef CONFIG_ARM
>> +/* Should domain memory be directly mapped? */
>> +#define CDF_directmap (1U << 1)
>> +#endif
>
> ... comment on this approach. I would be happy to switch to an ASSERT()
> if that's preferred.
... I think I did signal agreement with this approach beforehand.
It leaves the option to use the same bit for something x86-specific
down the road.
Jan
|
