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nouveau: find the smallest page allocation to cover a buffer alloc.

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With the new uapi we don't have the comp flags on the allocation,
so we shouldn't be using the first size that works, we should be
iterating until we get the correct one.

This reduces allocations from 2MB to 64k in lots of places.

Fixes dEQP-VK.memory.allocation.basic.size_8KiB.forward.count_4000
on my ampere/gsp system.

Cc: stable@vger.kernel.org # v6.6
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230811031520.248341-1-airlied@gmail.com
This commit is contained in:
Dave Airlie 2023-08-11 13:15:20 +10:00 committed by Danilo Krummrich
parent b9c02e1052
commit e9ba37d9f9
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/nouveau/nouveau_bo.c
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@ -318,8 +318,9 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 domain,
(!vmm->page[i].host || vmm->page[i].shift > PAGE_SHIFT)) (!vmm->page[i].host || vmm->page[i].shift > PAGE_SHIFT))
continue; continue;
if (pi < 0) /* pick the last one as it will be smallest. */
pi = i; pi = i;
/* Stop once the buffer is larger than the current page size. */ /* Stop once the buffer is larger than the current page size. */
if (*size >= 1ULL << vmm->page[i].shift) if (*size >= 1ULL << vmm->page[i].shift)
break; break;