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vdpa/mlx5: Fix suboptimal range on iotlb iteration

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[ Upstream commit 35025963326e44d8bced3eecd42d2f040f4f0024 ]

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 <si-wei.liu@oracle.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Message-Id: <20241021134040.975221-3-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Si-Wei Liu 2024-10-21 16:40:40 +03:00 committed by Ksawlii
parent 5779f90b9c
commit 889fcd5832
1 changed files with 1 additions and 3 deletions
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4
drivers/vdpa/mlx5/core/mr.c
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@ -226,7 +226,6 @@ 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;
@ -237,10 +236,9 @@ static int map_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr
struct device *dma = mvdev->mdev->device;
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);