linux-kernel - Re: [PATCH v4] Mark xe driver as BROKEN if kernel page size is not 4kB

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Message-ID: <ccf7c5b0494e46bbf86d45927e6bd130115c50fb.camel@linux.intel.com>
Date: Mon, 04 Aug 2025 11:40:15 +0200
From: Thomas Hellström <thomas.hellstrom@...ux.intel.com>
To: Simon Richter <Simon.Richter@...yros.de>,
 intel-xe@...ts.freedesktop.org, 	dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org
Subject: Re: [PATCH v4] Mark xe driver as BROKEN if kernel page size is not
 4kB

On Sat, 2025-08-02 at 11:40 +0900, Simon Richter wrote:
> This driver, for the time being, assumes that the kernel page size is
> 4kB,
> so it fails on loong64 and aarch64 with 16kB pages, and ppc64el with
> 64kB
> pages.
> 
> Signed-off-by: Simon Richter <Simon.Richter@...yros.de>
> Cc: stable@...r.kernel.org
> ---
>  drivers/gpu/drm/xe/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
> index 2bb2bc052120..714d5702dfd7 100644
> --- a/drivers/gpu/drm/xe/Kconfig
> +++ b/drivers/gpu/drm/xe/Kconfig
> @@ -5,6 +5,7 @@ config DRM_XE
>  	depends on KUNIT || !KUNIT
>  	depends on INTEL_VSEC || !INTEL_VSEC
>  	depends on X86_PLATFORM_DEVICES || !(X86 && ACPI)
> +	depends on PAGE_SIZE_4KB || COMPILE_TEST || BROKEN
>  	select INTERVAL_TREE
>  	# we need shmfs for the swappable backing store, and in
> particular
>  	# the shmem_readpage() which depends upon tmpfs

R-B still stands.

I've pushed this to drm-xe-next with a Fixes: tag which means it will
likely end up in Linus' tree the upcoming weekend.

Thanks,
Thomas