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authorStefano Garzarella <sgarzare@redhat.com>2023-04-04 16:13:21 +0300
committerMichael S. Tsirkin <mst@redhat.com>2023-04-21 10:02:33 +0300
commitf609d6cbb36ab1c9c7434f67d555c57a2f7d3dde (patch)
treebdb0f24ba2b00a3dd6587f65b498ff139bdb0304 /drivers/vhost
parentc0371782500c5314741da9ccbfbf0375a0d379fc (diff)
downloadlinux-f609d6cbb36ab1c9c7434f67d555c57a2f7d3dde.tar.xz
vringh: define the stride used for translation
Define a macro to be reused in the different parts of the code. Useful for the next patches where we add more arrays to manage also translations with user VA. Suggested-by: Eugenio Perez Martin <eperezma@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Message-Id: <20230404131326.44403-5-sgarzare@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/vringh.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index a98adc469f19..3d5f6bb4ac31 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -1141,13 +1141,15 @@ static int iotlb_translate(const struct vringh *vrh,
return ret;
}
+#define IOTLB_IOV_STRIDE 16
+
static inline int copy_from_iotlb(const struct vringh *vrh, void *dst,
void *src, size_t len)
{
u64 total_translated = 0;
while (total_translated < len) {
- struct bio_vec iov[16];
+ struct bio_vec iov[IOTLB_IOV_STRIDE];
struct iov_iter iter;
u64 translated;
int ret;
@@ -1180,7 +1182,7 @@ static inline int copy_to_iotlb(const struct vringh *vrh, void *dst,
u64 total_translated = 0;
while (total_translated < len) {
- struct bio_vec iov[16];
+ struct bio_vec iov[IOTLB_IOV_STRIDE];
struct iov_iter iter;
u64 translated;
int ret;