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Michal Wajdeczko 611160b02a drm/xe/pf: Release all VFs configs on device removal
If we try to manually provision VFs using debugfs and then we
try to unload the driver, we will see complains like:

 [ ] Memory manager not clean during takedown.
 [ ] RIP: 0010:drm_mm_takedown+0x3f/0x100
 [ ] [drm:drm_mm_takedown] *ERROR* node [fedff000 + 00001000]: inserted at
      drm_mm_insert_node_in_range+0x2bd/0x520
      xe_ggtt_node_insert+0x52/0x90 [xe]
      pf_provision_vf_ggtt+0x1fa/0xac0 [xe]
      xe_gt_sriov_pf_config_set_ggtt+0x79/0x7a0 [xe]
      ggtt_set+0x53/0x80 [xe]
      simple_attr_write_xsigned.isra.0+0xd2/0x150
      simple_attr_write+0x14/0x30
      debugfs_attr_write+0x4e/0x80

 [ ] xe 0000:00:02.0: [drm] *ERROR* GT0: GUC ID manager unclean (1/65535)
 [ ] xe 0000:00:02.0: [drm] GT0:      total 65535
 [ ] xe 0000:00:02.0: [drm] GT0:      used 1
 [ ] xe 0000:00:02.0: [drm] GT0:      range 65534..65534 (1)

 [ ] xe 0000:00:02.0: [drm] *ERROR* GT0: GuC doorbells manager unclean (1/256)
 [ ] xe 0000:00:02.0: [drm] GT0:      count: 256
 [ ] xe 0000:00:02.0: [drm] GT0:      available range: 1..255 (255)
 [ ] xe 0000:00:02.0: [drm] GT0:      available total: 255
 [ ] xe 0000:00:02.0: [drm] GT0:      reserved range: 0..0 (1)
 [ ] xe 0000:00:02.0: [drm] GT0:      reserved total: 1

This could be easily fixed by adding config release action.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250211155034.1028-1-michal.wajdeczko@intel.com
History 2025-02-16 21:36:38 +01:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.