kernel/linux.git/drivers/gpu/drm/xe/xe_device.h, branch linux-7.1.y

drm/xe/xe3p_lpg: flush shrinker bo cachelines manually

2026-03-23T09:53:24+00:00

XA, new pat_index introduced post xe3p_lpg, is memory shared between the CPU and GPU is treated differently from other GPU memory when the Media engine is power-gated. XA is *always* flushed, like at the end-of-submssion (and maybe other places), just that internally as an optimisation hw doesn't need to make that a full flush (which will also include XA) when Media is off/powergated, since it doesn't need to worry about GT caches vs Media coherency, and only CPU vs GPU coherency, so can make that flush a targeted XA flush, since stuff tagged with XA now means it's shared with the CPU. The main implication is that we now need to somehow flush non-XA before freeing system memory pages, otherwise dirty cachelines could be flushed after the free (like if Media suddenly turns on and does a full flush) V4: Add comments for L2 flush path V3(Thomas/MattA/MattR): Restrict userptr with non-xa, then no need to flush manually V2(MattA): Expand commit description Reviewed-by: Thomas Hellström Link: https://patch.msgid.link/20260305121902.1892593-7-tejas.upadhyay@intel.com Signed-off-by: Tejas Upadhyay

drm/xe: Add for_each_gt_with_type() iterator

2026-03-09T21:19:45+00:00

There are a couple places in the driver today that have GT loops that only need to operate on a specific type of GT. E.g., for_each_gt(...) { if (xe_gt_is_media_type(gt)) continue; ... } Some upcoming development is expected to utilize this pattern a bit more widely, so add a dedicated iterator that allows looping over specific GT type(s). Note that this iterator uses a mask for the "type" parameter rather than a direct value match. That's probably a bit overkill for now given that there are only two possible types of GTs, but if additional types of GTs ever show up in the future, this approach will fit more naturally and allow cases where we might want to loop over a subset of the possible types, or specifically mask off one single type. Reviewed-by: Rodrigo Vivi Link: https://patch.msgid.link/20260305-gt-type-loops-v1-1-aa42e9fc3f06@intel.com Signed-off-by: Matt Roper

drm/xe: Move xe_root_tile_mmio() to xe_device.h

2026-02-05T20:08:28+00:00

It seems to be a better place for this helper function, where we already have other 'root' oriented helpers. Signed-off-by: Michal Wajdeczko Reviewed-by: Stuart Summers Reviewed-by: Matt Roper Link: https://patch.msgid.link/20260203211240.745-2-michal.wajdeczko@intel.com

drm/xe: Add vm to exec queues association

2026-01-17T02:24:49+00:00

Maintain a list of exec queues per vm which will be used by TLB invalidation code to do context-ID based tlb invalidations. v4: - More asserts (Stuart) - Per GT list (CI) - Skip adding / removal if context TLB invalidatiions not supported (Stuart) Signed-off-by: Nirmoy Das Signed-off-by: Matthew Brost Reviewed-by: Stuart Summers Tested-by: Stuart Summers Link: https://patch.msgid.link/20260116221731.868657-6-matthew.brost@intel.com

drm/xe: Add xe_device_asid_to_vm helper

2026-01-17T02:24:48+00:00

Introduce the xe_device_asid_to_vm helper, which can be used throughout the driver to resolve the VM from a given ASID. v4: - Move forward declare after includes (Stuart) Signed-off-by: Matthew Brost Reviewed-by: Matt Atwood Reviewed-by: Stuart Summers Tested-by: Stuart Summers Link: https://patch.msgid.link/20260116221731.868657-5-matthew.brost@intel.com

drm/xe: Validate wedged_mode parameter and define enum for modes

2026-01-08T21:07:07+00:00

Check correctness of the wedged_mode parameter input to ensure only supported values are accepted. Additionally, replace magic numbers with a clearly defined enum. Signed-off-by: Lukasz Laguna Reviewed-by: Rodrigo Vivi Link: https://patch.msgid.link/20260107174741.29163-2-lukasz.laguna@intel.com Signed-off-by: Rodrigo Vivi

drm/xe/uapi: Extend the madvise functionality to support foreign pagemap placement for svm

2025-12-23T09:00:48+00:00

Use device file descriptors and regions to represent pagemaps on foreign or local devices. The underlying files are type-checked at madvise time, and references are kept on the drm_pagemap as long as there is are madvises pointing to it. Extend the madvise preferred_location UAPI to support the region instance to identify the foreign placement. v2: - Improve UAPI documentation. (Matt Brost) - Sanitize preferred_mem_loc.region_instance madvise. (Matt Brost) - Clarify madvise drm_pagemap vs xe_pagemap refcounting. (Matt Brost) - Don't allow a foreign drm_pagemap madvise without a fast interconnect. v3: - Add a comment about reference-counting in xe_devmem_open() and remove the reference-count get-and-put. (Matt Brost) Signed-off-by: Thomas Hellström Reviewed-by: Matthew Brost Link: https://patch.msgid.link/20251219113320.183860-16-thomas.hellstrom@linux.intel.com

drm/xe: Add device flag to indicate standalone MERT

2025-11-25T16:45:22+00:00

The MERT subsystem manages memory accesses between host and device. On the Crescent Island platform, it requires direct management by the driver. Introduce a device flag and corresponding helpers to identify platforms with standalone MERT, enabling proper initialization and handling. Signed-off-by: Lukasz Laguna Reviewed-by: Ashutosh Dixit Signed-off-by: Michal Wajdeczko Link: https://patch.msgid.link/20251124190237.20503-2-lukasz.laguna@intel.com

drm/xe: Add a helper function to set recovery method

2025-08-26T14:11:34+00:00

Add a helper function to set recovery method. The recovery method can be set before declaring the device wedged and sending the drm wedged uevent. If no method is set, default unbind/re-bind method will be set. v2: fix documentation (Raag) Signed-off-by: Riana Tauro Reviewed-by: Raag Jadav Link: https://lore.kernel.org/r/20250826063419.3022216-5-riana.tauro@intel.com Signed-off-by: Rodrigo Vivi

drm/xe/pf: Invalidate LMTT during LMEM unprovisioning

2025-07-15T11:05:20+00:00

Invalidate LMTT immediately after removing VF's LMTT page tables and clearing root PTE in the LMTT PD to avoid any invalid access by the hardware (and VF) due to stale data. Signed-off-by: Michal Wajdeczko Cc: Michał Winiarski Cc: Piotr Piórkowski Cc: Matthew Brost Reviewed-by: Matthew Brost Link: https://lore.kernel.org/r/20250711193316.1920-6-michal.wajdeczko@intel.com