On Tue, Apr 4, 2023 at 9:14 PM Stefano Garzarella <sgarzare@xxxxxxxxxx> wrote:
>
> 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@xxxxxxxxxx>
> Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Thanks
> ---
>
> Notes:
> v4:
> - added this patch with the changes extracted from the next patch [Eugenio]
> - used _STRIDE instead of _SIZE [Eugenio]
>
> drivers/vhost/vringh.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
> index 0ba3ef809e48..4aee230f7622 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;
> --
> 2.39.2
>
