kernel/linux.git/drivers/accel/ivpu, branch v7.0-rc7

accel/ivpu: Add disable clock relinquish workaround for NVL-A0

2026-03-24T08:29:28+00:00

Turn on disable clock relinquish workaround for Nova Lake A0. Without this workaround NPU may not power off correctly after inference, leading to unexpected system behavior. Fixes: 550f4dd2cedd ("accel/ivpu: Add support for Nova Lake's NPU") Cc: # v6.19+ Reviewed-by: Lizhi.hou Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20260323095029.64613-1-karol.wachowski@linux.intel.com

accel/ivpu: Remove boot params address setting via MMIO register

2026-03-10T12:34:31+00:00

The NPU 60XX uses the default boot params location specified in the firmware image header, consistent with earlier generations. Remove the unnecessary MMIO register write, freeing the AON register for future use. Fixes: 44e4c88951fa ("accel/ivpu: Implement warm boot flow for NPU6 and unify boot handling") Signed-off-by: Andrzej Kacprowski Reviewed-by: Karol Wachowski Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20260305142226.194995-1-andrzej.kacprowski@linux.intel.com (cherry picked from commit 81e62e7bf8b9309bf0febdf00940818f98bc23d8) Signed-off-by: Thomas Zimmermann

Convert 'alloc_flex' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This is the exact same thing as the 'alloc_obj()' version, only much smaller because there are a lot fewer users of the *alloc_flex() interface. As with alloc_obj() version, this was done entirely with mindless brute force, using the same script, except using 'flex' in the pattern rather than 'objs*'. Signed-off-by: Linus Torvalds

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

accel/ivpu: Implement warm boot flow for NPU6 and unify boot handling

2026-01-08T10:49:37+00:00

Starting from NPU6, the driver can pass boot parameters address through the AON retention register and toggle between cold/warm boot types using the boot_type parameter, while setting the cold boot entry point in both cases. Refactor the existing cold/warm boot handling to be consistent with the new NPU6 boot flow requirements and still maintain compatibility with older boot flows. This will allow firmware to remove support for legacy warm boot starting from NPU6. Fixes: 550f4dd2cedd ("accel/ivpu: Add support for Nova Lake's NPU") Signed-off-by: Karol Wachowski Reviewed-by: Jeff Hugo Reviewed-by: Andrzej Kacprowski Signed-off-by: Maciej Falkowski Link: https://patch.msgid.link/20251230142116.540026-1-maciej.falkowski@linux.intel.com

accel/ivpu: Validate scatter-gather size against buffer size

2025-12-16T07:10:19+00:00

Validate scatter-gather table size matches buffer object size before mapping. Break mapping early if the table exceeds buffer size to prevent overwriting existing mappings. Also validate the table is not smaller than buffer size to avoid unmapped regions that trigger MMU translation faults. Log error and fail mapping operation on size mismatch to prevent data corruption from mismatched host memory locations and NPU addresses. Unmap any partially mapped buffer on failure. Reviewed-by: Lizhi Hou Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20251215070933.520377-1-karol.wachowski@linux.intel.com

accel/ivpu: Fix warning due to undefined CONFIG_PROC_FS

2025-11-12T08:34:18+00:00

Change #if to #ifdef CONFIG_PROC_FS to fix warning reported by test robot: drivers/accel/ivpu/ivpu_drv.c:458:5: warning: "CONFIG_PROC_FS" is not defined, evaluates to 0 [-Wundef] Fixes: 63cc028484ab ("accel/ivpu: Add fdinfo support for memory statistics") Reviewed-by: Maciej Falkowski Reviewed-by: Andrzej.Kacprowski@linux.intel.com Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20251112071911.1136934-1-karol.wachowski@linux.intel.com

accel/ivpu: Count only resident buffers in memory utilization

2025-11-12T06:58:44+00:00

Do not count buffer objects that have no backing pages, including imported buffers where pages are set by VM faults triggered by userspace or pinned by other drivers. Instead, return information about actual memory used by the NPU. Counting imported buffers results in incorrect calculations when the same pages are counted multiple times, giving overly high results. Fixes: 7bfc9fa99580 ("accel/ivpu: Expose NPU memory utilization info in sysfs") Reviewed-by: Jeff Hugo Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20251106101052.1050348-3-karol.wachowski@linux.intel.com

accel/ivpu: Add fdinfo support for memory statistics

2025-11-12T06:58:44+00:00

Implement DRM fdinfo interface to expose memory usage statistics for NPU device file descriptors. Exclude unpinned and imported buffers from resident memory calculations to provide accurate memory usage reporting. Reviewed-by: Jeff Hugo Signed-off-by: Karol Wachowski Link: https://patch.msgid.link/20251106101052.1050348-2-karol.wachowski@linux.intel.com