GPU: Add support for the new xe KMD

[tkatila]

Separates i915 and xe KMDs via resource name: gpu.intel.com/i915 vs gpu.intel.com/xe. Supports both i915 and xe devices at the same time, but with RM only one type is allowed. Also made some changes to the documentation and NFD rules.

Fixes: #1688

[eero-t]

Few documentation comments/suggestions.

[eero-t]

Some doc suggestions

[eero-t]

Docs look fine to me now. Somebody else can review the code part...

[eero-t]

I wonder whether it would make sense also to list the driver package names required for L0 (compute+monitoring)?

• Intel driver repos: https://dgpu-docs.intel.com/
  • For Ubuntu 22.04:
    • level-zero-dev + intel-level-zero-gpu
  • For RHEL/SLES:
    • level-zero-devel + intel-level-zero-gpu
• ⁠Debian (Testing+) / Ubuntu (24.04+):
  • libze-dev + libze-intel-gpu1
• Fedora (38+):
  • oneapi-level-zero-devel + intel-level-zero
• Arch Linux:
  • level-zero-headers + intel-compute-runtime

(As those packages are missing from older distros and their package names are therefore less familiar.)

[tkatila]

I wonder whether it would make sense also to list the driver package names required for L0 (compute+monitoring)?

In general yes, I just don't know if the GPU plugin is the most sensible place for it. At least I wouldn't put those to the main readme.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.72180% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 40.25%. Comparing base (7d00cf0) to head (e0c4ef1).

❗ Current head e0c4ef1 differs from pull request most recent head 4946b26. Consider uploading reports for the commit 4946b26 to get more accurate results

Files	Patch %	Lines
cmd/gpu_plugin/rm/gpu_plugin_resource_manager.go	33.33%	11 Missing and 1 partial ⚠️
cmd/gpu_plugin/device_props.go	92.59%	1 Missing and 1 partial ⚠️
cmd/gpu_plugin/gpu_plugin.go	98.48%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1670      +/-   ##
==========================================
+ Coverage   39.67%   40.25%   +0.57%     
==========================================
  Files          73       75       +2     
  Lines        6520     6573      +53     
==========================================
+ Hits         2587     2646      +59     
+ Misses       3782     3778       -4     
+ Partials      151      149       -2     

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[mythi]

would it make sense to update e2e/gpu tests to explicitly check xe or i915 but keep the former disabled (SKIP) for now?

[tkatila]

would it make sense to update e2e/gpu tests to explicitly check xe or i915 but keep the former disabled (SKIP) for now?

I think so. We had an internal discussion that we could add a Flex card or similar to the e2e node and tie one GPU to i915 and another to xe.

I'll add the test.

[mythi]

LGTM

[eero-t]

Took a quick look also at the code and that looks OK too.

PS. At some point memory amount checks need to move from using out-of-tree i915 sysfs file, to supporting upstream i915 / Xe KMD ioctl interface, but that does not need to be done in this PR: https://docs.kernel.org/gpu/driver-uapi.html