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anv: add an option to disable allocation over subscription

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Usually I'm able to run B580 capture on LNL, but in some cases the
oversubscription on replay would lead to allocation failures.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41501>
This commit is contained in:
Lionel Landwerlin 2026-05-05 16:52:58 +03:00 • committed by Marge Bot
parent 45db78332e
commit 8e3084dfe6
4 changed files with 46 additions and 37 deletions
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22
src/intel/vulkan/anv_allocator.c
View file

@ -1696,16 +1696,18 @@ anv_device_alloc_bo(struct anv_device *device,
* MTL(Xe KMD only)/LNL platforms, which incur largest perf penalty from
* page misses.
*/
if (align64(size, 2 * 1024 * 1024) <= (size * 4 / 3) &&
anv_device_has_perf_improvement_with_2mb_pages_oversubscription(device))
size = align64(size, 2 * 1024 * 1024);
/* bos larger than 1MB can't be allocated with slab but to reduce pages we
* could align size to 64k pages to gain performance with minimum memory
* waste.
*/
else if ((size > (1 * 1024 * 1024)) &&
anv_device_has_perf_improvement_with_64k_pages(device))
size = align64(size, 64 * 1024);
if (!ANV_DEBUG(NO_ALLOC_OVER_SUBSCRIPTION)) {
if (align64(size, 2 * 1024 * 1024) <= (size * 4 / 3) &&
anv_device_has_perf_improvement_with_2mb_pages_oversubscription(device))
size = align64(size, 2 * 1024 * 1024);
/* bos larger than 1MB can't be allocated with slab but to reduce pages we
* could align size to 64k pages to gain performance with minimum memory
* waste.
*/
else if ((size > (1 * 1024 * 1024)) &&
anv_device_has_perf_improvement_with_64k_pages(device))
size = align64(size, 64 * 1024);
}
const struct intel_memory_class_instance *regions[2];
uint32_t nregions = 0;

5
src/intel/vulkan/anv_device.c
View file

@ -1574,6 +1574,11 @@ anv_vma_alloc(struct anv_device *device,
done:
pthread_mutex_unlock(&device->vma_mutex);
if (addr == 0 && client_address) {
mesa_logi("Virtual address allocation failed, "
"consider running with ANV_DEBUG=no-alloc-oversubscription");
}
assert(addr == intel_48b_address(addr));
return intel_canonical_address(addr);
}

27
src/intel/vulkan/anv_instance.c
View file

@ -119,19 +119,20 @@ static const driOptionDescription anv_dri_options[] = {
};
static const struct debug_control debug_control[] = {
{ "bindless", ANV_DEBUG_BINDLESS},
{ "desc-dirty", ANV_DEBUG_DESCRIPTOR_DIRTY},
{ "dgc-dump", ANV_DEBUG_DGC_DUMP},
{ "experimental", ANV_DEBUG_EXPERIMENTAL},
{ "no-gpl", ANV_DEBUG_NO_GPL},
{ "no-slab", ANV_DEBUG_NO_SLAB},
{ "no-sparse", ANV_DEBUG_NO_SPARSE},
{ "sparse-trtt", ANV_DEBUG_SPARSE_TRTT},
{ "video-decode", ANV_DEBUG_VIDEO_DECODE},
{ "video-encode", ANV_DEBUG_VIDEO_ENCODE},
{ "shader-dump", ANV_DEBUG_SHADER_DUMP},
{ "shader-hash", ANV_DEBUG_SHADER_HASH},
{ "shader-print", ANV_DEBUG_SHADER_PRINT},
{ "bindless", ANV_DEBUG_BINDLESS},
{ "desc-dirty", ANV_DEBUG_DESCRIPTOR_DIRTY},
{ "dgc-dump", ANV_DEBUG_DGC_DUMP},
{ "experimental", ANV_DEBUG_EXPERIMENTAL},
{ "no-gpl", ANV_DEBUG_NO_GPL},
{ "no-alloc-oversubscription", ANV_DEBUG_NO_ALLOC_OVER_SUBSCRIPTION},
{ "no-slab", ANV_DEBUG_NO_SLAB},
{ "no-sparse", ANV_DEBUG_NO_SPARSE},
{ "sparse-trtt", ANV_DEBUG_SPARSE_TRTT},
{ "video-decode", ANV_DEBUG_VIDEO_DECODE},
{ "video-encode", ANV_DEBUG_VIDEO_ENCODE},
{ "shader-dump", ANV_DEBUG_SHADER_DUMP},
{ "shader-hash", ANV_DEBUG_SHADER_HASH},
{ "shader-print", ANV_DEBUG_SHADER_PRINT},
{ NULL, 0 }
};

29
src/intel/vulkan/anv_private.h
View file

@ -1735,20 +1735,21 @@ anv_physical_device_has_vram(const struct anv_physical_device *device)
}
enum anv_debug {
ANV_DEBUG_BINDLESS = BITFIELD_BIT(0),
ANV_DEBUG_NO_GPL = BITFIELD_BIT(1),
ANV_DEBUG_NO_SECONDARY_CALL = BITFIELD_BIT(2),
ANV_DEBUG_NO_SPARSE = BITFIELD_BIT(3),
ANV_DEBUG_SPARSE_TRTT = BITFIELD_BIT(4),
ANV_DEBUG_VIDEO_DECODE = BITFIELD_BIT(5),
ANV_DEBUG_VIDEO_ENCODE = BITFIELD_BIT(6),
ANV_DEBUG_SHADER_HASH = BITFIELD_BIT(7),
ANV_DEBUG_NO_SLAB = BITFIELD_BIT(8),
ANV_DEBUG_DESCRIPTOR_DIRTY = BITFIELD_BIT(9),
ANV_DEBUG_SHADER_PRINT = BITFIELD_BIT(10),
ANV_DEBUG_SHADER_DUMP = BITFIELD_BIT(11),
ANV_DEBUG_EXPERIMENTAL = BITFIELD_BIT(12),
ANV_DEBUG_DGC_DUMP = BITFIELD_BIT(13),
ANV_DEBUG_BINDLESS = BITFIELD_BIT(0),
ANV_DEBUG_NO_GPL = BITFIELD_BIT(1),
ANV_DEBUG_NO_SECONDARY_CALL = BITFIELD_BIT(2),
ANV_DEBUG_NO_SPARSE = BITFIELD_BIT(3),
ANV_DEBUG_SPARSE_TRTT = BITFIELD_BIT(4),
ANV_DEBUG_VIDEO_DECODE = BITFIELD_BIT(5),
ANV_DEBUG_VIDEO_ENCODE = BITFIELD_BIT(6),
ANV_DEBUG_SHADER_HASH = BITFIELD_BIT(7),
ANV_DEBUG_NO_SLAB = BITFIELD_BIT(8),
ANV_DEBUG_DESCRIPTOR_DIRTY = BITFIELD_BIT(9),
ANV_DEBUG_SHADER_PRINT = BITFIELD_BIT(10),
ANV_DEBUG_SHADER_DUMP = BITFIELD_BIT(11),
ANV_DEBUG_EXPERIMENTAL = BITFIELD_BIT(12),
ANV_DEBUG_DGC_DUMP = BITFIELD_BIT(13),
ANV_DEBUG_NO_ALLOC_OVER_SUBSCRIPTION = BITFIELD_BIT(14),
};
extern enum anv_debug anv_debug;