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tu/drm: msm's has_set_iova codepath should avoid freeing zombified tu_sparse_vma

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In msm backend's has_set_iova codepath, mapping a BO into a lazy VMA will
require moving that VMA into the zombie VMA mechanism once the BO is
destroyed. That means tu_sparse_vma destruction should avoid freeing VMA if
BO was mapped into it and then zombified.

Signed-off-by: Zan Dobersek <zdobersek@igalia.com>
Fixes: 764b3d9161 ("tu: Implement transient attachments and lazily allocated memory")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37413>
This commit is contained in:
Zan Dobersek 2025-09-19 15:10:45 +02:00 • committed by Marge Bot
parent 64fc91bb58
commit d3cedd2fa5
2 changed files with 10 additions and 2 deletions
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1
src/freedreno/vulkan/tu_knl.h
View file

@ -102,6 +102,7 @@ struct tu_sparse_vma {
struct {
uint64_t iova;
uint64_t size;
bool backs_lazy_bo;
} msm;
struct {
struct tu_bo *virtual_bo;

11
src/freedreno/vulkan/tu_knl_drm_msm.cc
View file

@ -890,7 +890,10 @@ msm_bo_init(struct tu_device *dev,
TU_RMV(internal_resource_create, dev, bo);
TU_RMV(resource_name, dev, bo, name);
}
bo->lazy = !!lazy_vma;
if (lazy_vma) {
lazy_vma->msm.backs_lazy_bo = true;
bo->lazy = true;
}
} else {
if (!lazy_vma)
tu_free_iova(dev, iova, size);
@ -1155,7 +1158,11 @@ msm_sparse_vma_finish(struct tu_device *dev,
vma->msm.size);
}
tu_free_iova(dev, vma->msm.iova, vma->msm.size);
/* For has_set_iova, if a lazy BO was mapped into this sparse VMA
* the allocation will be handed off to the zombie VMA mechanism.
*/
if (dev->physical_device->has_vm_bind || !vma->msm.backs_lazy_bo)
tu_free_iova(dev, vma->msm.iova, vma->msm.size);
}
static int