[PATCH v2] drm/xe: Extend Wa_13011645652 to PTL-H, WCL

[PATCH v2] drm/xe: Extend Wa_13011645652 to PTL-H, WCL

[Julia Filipchuk]

Expand workaround to additional graphics architectures.

Fixes: dddc53806dd2 ("drm/xe/ptl: Apply Wa_13011645652")
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: intel-xe@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.15+
Signed-off-by: Julia Filipchuk <julia.filipchuk@intel.com>
---
 drivers/gpu/drm/xe/xe_wa_oob.rules | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_wa_oob.rules b/drivers/gpu/drm/xe/xe_wa_oob.rules
index e990f20eccfe..710f4423726c 100644
--- a/drivers/gpu/drm/xe/xe_wa_oob.rules
+++ b/drivers/gpu/drm/xe/xe_wa_oob.rules
@@ -30,7 +30,8 @@
 16022287689	GRAPHICS_VERSION(2001)
 		GRAPHICS_VERSION(2004)
 13011645652	GRAPHICS_VERSION(2004)
-		GRAPHICS_VERSION(3001)
+		GRAPHICS_VERSION_RANGE(3000, 3001)
+		GRAPHICS_VERSION(3003)
 14022293748	GRAPHICS_VERSION_RANGE(2001, 2002)
 		GRAPHICS_VERSION(2004)
 		GRAPHICS_VERSION_RANGE(3000, 3001)
-- 
2.50.1

Re: [PATCH v2] drm/xe: Extend Wa_13011645652 to PTL-H, WCL

[John Harrison]

On 9/3/2025 12:00 PM, Julia Filipchuk wrote:
> Expand workaround to additional graphics architectures.
>
> Fixes: dddc53806dd2 ("drm/xe/ptl: Apply Wa_13011645652")
Does this count as a fix? If we are just extending a workaround to apply 
to more platforms, that is not a bug fix of the workaround. It is more 
of a new platform enabling patch. Indeed, if you send this patch as a 
backported fix to older kernels, those older trees might not support the 
new platform. Which is therefore unnecessary backport work and extra 
confusion because the tree is now claiming to support a platform which 
it actually does not.

John.

> Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
> Cc: Stuart Summers <stuart.summers@intel.com>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> Cc: Lucas De Marchi <lucas.demarchi@intel.com>
> Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Cc: intel-xe@lists.freedesktop.org
> Cc: <stable@vger.kernel.org> # v6.15+
> Signed-off-by: Julia Filipchuk <julia.filipchuk@intel.com>
> ---
>   drivers/gpu/drm/xe/xe_wa_oob.rules | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/xe/xe_wa_oob.rules b/drivers/gpu/drm/xe/xe_wa_oob.rules
> index e990f20eccfe..710f4423726c 100644
> --- a/drivers/gpu/drm/xe/xe_wa_oob.rules
> +++ b/drivers/gpu/drm/xe/xe_wa_oob.rules
> @@ -30,7 +30,8 @@
>   16022287689	GRAPHICS_VERSION(2001)
>   		GRAPHICS_VERSION(2004)
>   13011645652	GRAPHICS_VERSION(2004)
> -		GRAPHICS_VERSION(3001)
> +		GRAPHICS_VERSION_RANGE(3000, 3001)
> +		GRAPHICS_VERSION(3003)
>   14022293748	GRAPHICS_VERSION_RANGE(2001, 2002)
>   		GRAPHICS_VERSION(2004)
>   		GRAPHICS_VERSION_RANGE(3000, 3001)

Re: [PATCH v2] drm/xe: Extend Wa_13011645652 to PTL-H, WCL

[Julia Filipchuk]

On 9/3/2025 1:28 PM, John Harrison wrote:
> Does this count as a fix? If we are just extending a workaround to apply to more
> platforms, that is not a bug fix of the workaround. It is more of a new platform
> enabling patch. Indeed, if you send this patch as a backported fix to older
> kernels, those older trees might not support the new platform. Which is
> therefore unnecessary backport work and extra confusion because the tree is now
> claiming to support a platform which it actually does not.
Possibly not. Just intending to send this to the current mainline 6.17 with
backport not necessary. The workaround would still apply if ever loaded with
older kernel.

Re: [PATCH v2] drm/xe: Extend Wa_13011645652 to PTL-H, WCL

[Matt Atwood]

On Wed, Sep 03, 2025 at 02:29:54PM -0700, Julia Filipchuk wrote:
> On 9/3/2025 1:28 PM, John Harrison wrote:
> > Does this count as a fix? If we are just extending a workaround to apply to more
> > platforms, that is not a bug fix of the workaround. It is more of a new platform
> > enabling patch. Indeed, if you send this patch as a backported fix to older
> > kernels, those older trees might not support the new platform. Which is
> > therefore unnecessary backport work and extra confusion because the tree is now
> > claiming to support a platform which it actually does not.
> Possibly not. Just intending to send this to the current mainline 6.17 with
> backport not necessary. The workaround would still apply if ever loaded with
> older kernel.
I would like to see this to get into fixes and brought into 6.17.

MattA

Re: [PATCH v2] drm/xe: Extend Wa_13011645652 to PTL-H, WCL

[Lucas De Marchi]

On Wed, Sep 03, 2025 at 02:29:54PM -0700, Julia Filipchuk wrote:
>On 9/3/2025 1:28 PM, John Harrison wrote:
>> Does this count as a fix? If we are just extending a workaround to apply to more
>> platforms, that is not a bug fix of the workaround. It is more of a new platform
>> enabling patch. Indeed, if you send this patch as a backported fix to older
>> kernels, those older trees might not support the new platform. Which is
>> therefore unnecessary backport work and extra confusion because the tree is now
>> claiming to support a platform which it actually does not.
>Possibly not. Just intending to send this to the current mainline 6.17 with
>backport not necessary. The workaround would still apply if ever loaded with
>older kernel.

Rodrigo, once this applies without the Fixes trailer, can you queue it
up for drm-xe-fixes?

Lucas De Marchi