Re: Request for backporting accel/ivpu PTL patches to 6.12

[Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>]

Hi,

On 6/4/2025 3:21 PM, Greg KH wrote:
> On Tue, Jun 03, 2025 at 12:42:09PM +0200, Jacek Lawrynowicz wrote:
>> Hi,
>>
>> Please cherry-pick following 9 patches to 6.12:
>> 525a3858aad73 accel/ivpu: Set 500 ns delay between power island TRICKLE and ENABLE
>> 08eb99ce911d3 accel/ivpu: Do not fail on cmdq if failed to allocate preemption buffers
>> 755fb86789165 accel/ivpu: Use whole user and shave ranges for preemption buffers
>> 98110eb5924bd accel/ivpu: Increase MS info buffer size
>> c140244f0cfb9 accel/ivpu: Add initial Panther Lake support
>> 88bdd1644ca28 accel/ivpu: Update power island delays
>> ce68f86c44513 accel/ivpu: Do not fail when more than 1 tile is fused
>> 83b6fa5844b53 accel/ivpu: Increase DMA address range
>> e91191efe75a9 accel/ivpu: Move secondary preemption buffer allocation to DMA range
>>
>> These add support for new Panther Lake HW.
>> They should apply without conflicts.
> 
> That's way larger than the normal "add a new quirk or device id" patch
> for new device support, right?  Why do you feel this is needed and
> relevant for 6.12.y and meets the requirements that we have for stable
> kernel patches?

Yeah, maybe I overshot a bit. Sorry about this.
I wanted to provide the best possible PTL experience but most of these patches are not critical.

The absolute minimal set of patches to enable PTL is:
c140244f0cfb9 accel/ivpu: Add initial Panther Lake support
88bdd1644ca28 accel/ivpu: Update power island delays

Please include just these two.

Regards,
Jacek