From: Stefano Garzarella Date: Tue, 4 Apr 2023 13:13:21 +0000 (+0200) Subject: vringh: define the stride used for translation X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f609d6cbb36ab1c9c7434f67d555c57a2f7d3dde;p=linux.git 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 Signed-off-by: Stefano Garzarella Message-Id: <20230404131326.44403-5-sgarzare@redhat.com> Signed-off-by: Michael S. Tsirkin --- diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index a98adc469f192..3d5f6bb4ac31e 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;