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Re: [PATCH v7 14/14] xen/arm: add cache coloring support for Xen
- To: Carlo Nonato <carlo.nonato@xxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 19 Mar 2024 17:15:59 +0100
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Marco Solieri <marco.solieri@xxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 19 Mar 2024 16:16:12 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.03.2024 16:58, Jan Beulich wrote:
> On 15.03.2024 11:59, Carlo Nonato wrote:
>> @@ -326,6 +328,27 @@ unsigned int get_max_nr_llc_colors(void)
>> return max_nr_colors;
>> }
>>
>> +paddr_t __init xen_colored_map_size(void)
>> +{
>> + return ROUNDUP((_end - _start) * max_nr_colors, XEN_PADDR_ALIGN);
>> +}
>
> XEN_PADDR_ALIGN is an inherently Arm thing. Such better wouldn't appear
> in common code.
And actually in patch 10 you introduce get_max_nr_llc_colors). With
that, this calculation can more to Arm code.
Jan
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