diff options
| author | Xie Yongji <xieyongji@bytedance.com> | 2021-08-09 18:09:23 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-05 16:23:08 -0400 |
| commit | 0d8c9e7d4b403f10f5c277efefd787244198a00c (patch) | |
| tree | 1516b93df3fb0fac37843d7367974936d923ce98 /drivers/vdpa/vdpa_sim | |
| parent | 23b228cb89fdad2140b6b73254ecaf5fb05de5fe (diff) | |
vdpa_sim: Use iova_shift() for the size passed to alloc_iova()
The size passed to alloc_iova() should be the size of page frames.
Now we use byte granularity for the iova domain, so it's safe to
pass the size in bytes to alloc_iova(). But it would be better to use
iova_shift() for the size to avoid future bugs if we change granularity.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210809100923.38-1-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'drivers/vdpa/vdpa_sim')
| -rw-r--r-- | drivers/vdpa/vdpa_sim/vdpa_sim.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index c621cf7feec0..5b51d0ac8bae 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -137,7 +137,8 @@ static dma_addr_t vdpasim_map_range(struct vdpasim *vdpasim, phys_addr_t paddr, int ret; /* We set the limit_pfn to the maximum (ULONG_MAX - 1) */ - iova = alloc_iova(&vdpasim->iova, size, ULONG_MAX - 1, true); + iova = alloc_iova(&vdpasim->iova, size >> iova_shift(&vdpasim->iova), + ULONG_MAX - 1, true); if (!iova) return DMA_MAPPING_ERROR; |