[PATCH 2/3] nouveau/vmm: increase size of vmm pte tracker struct to u32 (v2)

[Dave Airlie <airlied@gmail.com>]

From: Dave Airlie <airlied@redhat.com>

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.

Signed-off-by: Dave Airlie <airlied@redhat.com>

---
v2: fix memset32 wrong length
---
 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c | 6 +++---
 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h | 9 +++++----
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
index efc334f6104c..44daeec0aa6d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.c
@@ -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--)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h
index a6312a0e6b84..a8b08126e8dc 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h
@@ -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;
 };
 
-- 
2.52.0