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nouveau/vmm: increase size of vmm pte tracker struct to u32 (v2)

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We need to tracker large counts of spte than previously due to unref
getting delayed sometimes.

This doesn't fix LPT tracking yet, it just creates space for it.

Reviewed-by: Mary Guillemard <mary@mary.zone>
Tested-by: Mary Guillemard <mary@mary.zone>
Tested-by: Mel Henning <mhenning@darkrefraction.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260204030208.2313241-3-airlied@gmail.com
This commit is contained in:
Dave Airlie 2026-02-04 13:00:06 +10:00
parent c4d53e567d
commit 9dc983a85e
2 changed files with 8 additions and 7 deletions
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6
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
View File

@ -387,7 +387,7 @@ nvkm_vmm_sparse_ptes(const struct nvkm_vmm_desc *desc,
} else
if (desc->type == LPT) {
union nvkm_pte_tracker sparse = { .s.sparse = 1 };
memset(&pgt->pte[ptei].u, sparse.u, ptes);
memset32(&pgt->pte[ptei].u, sparse.u, ptes);
}
}
@ -399,7 +399,7 @@ nvkm_vmm_sparse_unref_ptes(struct nvkm_vmm_iter *it, bool pfn, u32 ptei, u32 pte
memset(&pt->pde[ptei], 0x00, sizeof(pt->pde[0]) * ptes);
else
if (it->desc->type == LPT)
memset(&pt->pte[ptei].u, 0x00, sizeof(pt->pte[0]) * ptes);
memset32(&pt->pte[ptei].u, 0x00, ptes);
return nvkm_vmm_unref_ptes(it, pfn, ptei, ptes);
}
@ -458,7 +458,7 @@ nvkm_vmm_ref_hwpt(struct nvkm_vmm_iter *it, struct nvkm_vmm_pt *pgd, u32 pdei)
desc->func->sparse(vmm, pt, pteb, ptes);
else
desc->func->invalid(vmm, pt, pteb, ptes);
memset(&pgt->pte[pteb], 0x00, ptes);
memset32(&pgt->pte[pteb].u, 0x00, ptes);
} else {
desc->func->unmap(vmm, pt, pteb, ptes);
while (ptes--)

9
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h
View File

@ -5,11 +5,12 @@
enum nvkm_memory_target;
union nvkm_pte_tracker {
u8 u;
u32 u;
struct {
u8 sparse:1;
u8 spte_valid:1;
u8 sptes:6;
u32 sparse:1;
u32 spte_valid:1;
u32 padding:14;
u32 sptes:16;
} s;
};