Re: [PATCH 2/6] xen/arm: fix math in add_hwdom_free_regions

[Orzel, Michal]

On 05/05/2025 09:52, Orzel, Michal wrote:
> 
> 
> On 05/05/2025 04:56, Stewart Hildebrand wrote:
>> Erroneous logic was duplicated from add_ext_regions() into
>> add_hwdom_free_regions(). Frame numbers are converted to addresses, but
>> the end address (e) is rounded down to page size alignment. The logic to
>> calculate the size assumes e points to the last address, not page,
>> effectively leading to the region size being erroneously calculated to
>> be 2M smaller than the actual size of the region.
>>
>> Fix by adding 1 to the frame number before converting back to address.
>>
>> Fixes: 02975cc38389 ("xen/arm: permit non direct-mapped Dom0 construction")
>> Signed-off-by: Stewart Hildebrand <stewart.hildebr...@amd.com>
> Acked-by: Michal Orzel <michal.or...@amd.com>

I wanted to commit your fixes but rebase is required after recent dom0less code
movement. Please do.

~Michal