diff options
| author | Christoph Hellwig <hch@lst.de> | 2025-05-01 09:22:30 -0500 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-05-27 10:27:53 -0400 |
| commit | 169294a14b3f80ce184fe832ff640b67a1b9eb3b (patch) | |
| tree | ebcfca10410eb3f511c502de9668137ca4f591ee | |
| parent | 8b3f9967b1fd481ed932f453c38aec99f3c90d95 (diff) | |
vringh: use bvec_kmap_local
Use the bvec_kmap_local helper rather than digging into the bvec
internals.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Message-Id: <20250501142244.2888227-1-hch@lst.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
| -rw-r--r-- | drivers/vhost/vringh.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index 93735fc5c5b4..bbce65452701 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -1290,11 +1290,10 @@ static inline int getu16_iotlb(const struct vringh *vrh, if (ret) return ret; } else { - void *kaddr = kmap_local_page(ivec.iov.bvec[0].bv_page); - void *from = kaddr + ivec.iov.bvec[0].bv_offset; + __virtio16 *from = bvec_kmap_local(&ivec.iov.bvec[0]); - tmp = READ_ONCE(*(__virtio16 *)from); - kunmap_local(kaddr); + tmp = READ_ONCE(*from); + kunmap_local(from); } *val = vringh16_to_cpu(vrh, tmp); @@ -1329,11 +1328,10 @@ static inline int putu16_iotlb(const struct vringh *vrh, if (ret) return ret; } else { - void *kaddr = kmap_local_page(ivec.iov.bvec[0].bv_page); - void *to = kaddr + ivec.iov.bvec[0].bv_offset; + __virtio16 *to = bvec_kmap_local(&ivec.iov.bvec[0]); - WRITE_ONCE(*(__virtio16 *)to, tmp); - kunmap_local(kaddr); + WRITE_ONCE(*to, tmp); + kunmap_local(to); } return 0; |