| Message ID | 20230404131326.44403-5-sgarzare@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | vdpa_sim: add support for user VA | expand |
On Tue, Apr 4, 2023 at 9:14 PM Stefano Garzarella <sgarzare@redhat.com> 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@redhat.com> > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> 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 >
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;
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> --- 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(-)