From 35025963326e44d8bced3eecd42d2f040f4f0024 Mon Sep 17 00:00:00 2001 From: Si-Wei Liu Date: Mon, 21 Oct 2024 16:40:40 +0300 Subject: [PATCH] vdpa/mlx5: Fix suboptimal range on iotlb iteration The starting iova address to iterate iotlb map entry within a range was set to an irrelevant value when passing to the itree_next() iterator, although luckily it doesn't affect the outcome of finding out the granule of the smallest iotlb map size. Fix the code to make it consistent with the following for-loop. Fixes: 94abbccdf291 ("vdpa/mlx5: Add shared memory registration code") Signed-off-by: Si-Wei Liu Signed-off-by: Dragos Tatulea Message-Id: <20241021134040.975221-3-dtatulea@nvidia.com> Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang --- drivers/vdpa/mlx5/core/mr.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c index 7d0c83b5b071..8455f08f5d40 100644 --- a/drivers/vdpa/mlx5/core/mr.c +++ b/drivers/vdpa/mlx5/core/mr.c @@ -368,7 +368,6 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr unsigned long lgcd = 0; int log_entity_size; unsigned long size; - u64 start = 0; int err; struct page *pg; unsigned int nsg; @@ -379,10 +378,9 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr struct device *dma = mvdev->vdev.dma_dev; for (map = vhost_iotlb_itree_first(iotlb, mr->start, mr->end - 1); - map; map = vhost_iotlb_itree_next(map, start, mr->end - 1)) { + map; map = vhost_iotlb_itree_next(map, mr->start, mr->end - 1)) { size = maplen(map, mr); lgcd = gcd(lgcd, size); - start += size; } log_entity_size = ilog2(lgcd);