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Re: [PATCH v8 04/13] xen/arm: add Dom0 cache coloring support
- To: Carlo Nonato <carlo.nonato@xxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 6 May 2024 14:01:42 +0200
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- Cc: andrea.bastoni@xxxxxxxxxxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Marco Solieri <marco.solieri@xxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 06 May 2024 12:01:51 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 02.05.2024 18:55, Carlo Nonato wrote:
> Add a command line parameter to allow the user to set the coloring
> configuration for Dom0.
> A common configuration syntax for cache colors is introduced and
> documented.
> Take the opportunity to also add:
> - default configuration notion.
> - function to check well-formed configurations.
>
> Direct mapping Dom0 isn't possible when coloring is enabled, so
> CDF_directmap flag is removed when creating it.
>
> Based on original work from: Luca Miccio <lucmiccio@xxxxxxxxx>
>
> Signed-off-by: Carlo Nonato <carlo.nonato@xxxxxxxxxxxxxxx>
> Signed-off-by: Marco Solieri <marco.solieri@xxxxxxxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
albeit ...
> v8:
> - added bound check on dom0_num_colors
> - default colors array set just once
> v7:
> - parse_color_config() doesn't accept leading/trailing commas anymore
> - removed alloc_colors() helper
> v6:
> - moved domain_llc_coloring_free() in this patch
... I'm having trouble seeing why this was done: Dom0 isn't ever cleaned up
after, is it?
Jan
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