linux-kernel - Re: [PATCH v4 03/28] drm/xe/pf: Convert control state to bitmap

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Message-ID: <481aa68f-ffb4-4eaf-a2aa-d112e9529aa0@intel.com>
Date: Wed, 5 Nov 2025 19:51:23 +0100
From: Michal Wajdeczko <michal.wajdeczko@...el.com>
To: Michał Winiarski <michal.winiarski@...el.com>, "Alex
 Williamson" <alex@...zbot.org>, Lucas De Marchi <lucas.demarchi@...el.com>,
	Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
	"Rodrigo Vivi" <rodrigo.vivi@...el.com>, Jason Gunthorpe <jgg@...pe.ca>,
	Yishai Hadas <yishaih@...dia.com>, Kevin Tian <kevin.tian@...el.com>, Shameer
 Kolothum <skolothumtho@...dia.com>, <intel-xe@...ts.freedesktop.org>,
	<linux-kernel@...r.kernel.org>, <kvm@...r.kernel.org>, Matthew Brost
	<matthew.brost@...el.com>
CC: <dri-devel@...ts.freedesktop.org>, Jani Nikula
	<jani.nikula@...ux.intel.com>, Joonas Lahtinen
	<joonas.lahtinen@...ux.intel.com>, Tvrtko Ursulin <tursulin@...ulin.net>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, "Lukasz
 Laguna" <lukasz.laguna@...el.com>, Christoph Hellwig <hch@...radead.org>,
	kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v4 03/28] drm/xe/pf: Convert control state to bitmap



On 11/5/2025 4:10 PM, Michał Winiarski wrote:
> In upcoming changes, the number of states will increase as a result of
> introducing SAVE and RESTORE states.
> This means that using unsigned long as underlying storage won't work on
> 32-bit architectures, as we'll run out of bits.
> Use bitmap instead.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202510231918.XlOqymLC-lkp@intel.com/
> Signed-off-by: Michał Winiarski <michal.winiarski@...el.com>
> ---

Reviewed-by: Michal Wajdeczko <michal.wajdeczko@...el.com>