* [PATCH 0/2] virtio_ring: fix errors to make virtio tools @ 2021-07-14 2:28 Cai Huoqing 2021-07-14 2:28 ` [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' Cai Huoqing 2021-07-14 2:28 ` [PATCH 2/2] virtio_ring: fix error - 'prev' and 'head_flags' may be used uninitialized in this function Cai Huoqing 0 siblings, 2 replies; 4+ messages in thread From: Cai Huoqing @ 2021-07-14 2:28 UTC (permalink / raw) To: sgarzare, mst, jasowang; +Cc: virtualization, linux-kernel, Cai Huoqing the errors occurs when run "make virtio" in linux/tools Cai Huoqing (2): virtio_ring: fix error - unknown type name 'spinlock_t' virtio_ring: fix error - 'prev' and 'head_flags' may be used uninitialized in this function drivers/virtio/virtio_ring.c | 6 +++--- include/linux/vringh.h | 2 ++ 2 files changed, 5 insertions(+), 3 deletions(-) -- 2.25.1 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' 2021-07-14 2:28 [PATCH 0/2] virtio_ring: fix errors to make virtio tools Cai Huoqing @ 2021-07-14 2:28 ` Cai Huoqing 2021-07-19 5:14 ` Cai,Huoqing 2021-07-14 2:28 ` [PATCH 2/2] virtio_ring: fix error - 'prev' and 'head_flags' may be used uninitialized in this function Cai Huoqing 1 sibling, 1 reply; 4+ messages in thread From: Cai Huoqing @ 2021-07-14 2:28 UTC (permalink / raw) To: sgarzare, mst, jasowang; +Cc: virtualization, linux-kernel, Cai Huoqing when run "make virtio" in linux/tools, the error: unknown type name 'spinlock_t' occurs Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> --- include/linux/vringh.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 84db7b8f912f..ff21c2643792 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -43,11 +43,13 @@ struct vringh { /* The vring (note: it may contain user pointers!) */ struct vring vring; +#if IS_REACHABLE(CONFIG_VHOST_IOTLB) /* IOTLB for this vring */ struct vhost_iotlb *iotlb; /* spinlock to synchronize IOTLB accesses */ spinlock_t *iotlb_lock; +#endif /* The function to call to notify the guest about added buffers */ void (*notify)(struct vringh *); -- 2.25.1 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* RE: [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' 2021-07-14 2:28 ` [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' Cai Huoqing @ 2021-07-19 5:14 ` Cai,Huoqing 0 siblings, 0 replies; 4+ messages in thread From: Cai,Huoqing @ 2021-07-19 5:14 UTC (permalink / raw) To: sgarzare, mst, jasowang; +Cc: virtualization, linux-kernel Is it a error, try “make virtio” in the path of linux/tools/ with config VHOST_IOTLB=n -----Original Message----- From: Cai,Huoqing <caihuoqing@baidu.com> Sent: 2021年7月14日 10:29 To: sgarzare@redhat.com; mst@redhat.com; jasowang@redhat.com Cc: virtualization@lists.linux-foundation.org; linux-kernel@vger.kernel.org; Cai,Huoqing <caihuoqing@baidu.com> Subject: [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' when run "make virtio" in linux/tools, the error: unknown type name 'spinlock_t' occurs Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> --- include/linux/vringh.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 84db7b8f912f..ff21c2643792 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -43,11 +43,13 @@ struct vringh { /* The vring (note: it may contain user pointers!) */ struct vring vring; +#if IS_REACHABLE(CONFIG_VHOST_IOTLB) /* IOTLB for this vring */ struct vhost_iotlb *iotlb; /* spinlock to synchronize IOTLB accesses */ spinlock_t *iotlb_lock; +#endif /* The function to call to notify the guest about added buffers */ void (*notify)(struct vringh *); -- 2.25.1 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 2/2] virtio_ring: fix error - 'prev' and 'head_flags' may be used uninitialized in this function 2021-07-14 2:28 [PATCH 0/2] virtio_ring: fix errors to make virtio tools Cai Huoqing 2021-07-14 2:28 ` [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' Cai Huoqing @ 2021-07-14 2:28 ` Cai Huoqing 1 sibling, 0 replies; 4+ messages in thread From: Cai Huoqing @ 2021-07-14 2:28 UTC (permalink / raw) To: sgarzare, mst, jasowang; +Cc: virtualization, linux-kernel, Cai Huoqing when run "make virtio" in linux/tools, the error: "'prev' and 'head_flags' may be used uninitialized in this function" occurs Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> --- drivers/virtio/virtio_ring.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 89bfe46a8a7f..290bdf8a3d36 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -486,7 +486,7 @@ static inline int virtqueue_add_split(struct virtqueue *_vq, struct vring_virtqueue *vq = to_vvq(_vq); struct scatterlist *sg; struct vring_desc *desc; - unsigned int i, n, avail, descs_used, prev, err_idx; + unsigned int i, n, avail, descs_used, prev = 0, err_idx; int head; bool indirect; @@ -1173,8 +1173,8 @@ static inline int virtqueue_add_packed(struct virtqueue *_vq, struct vring_packed_desc *desc; struct scatterlist *sg; unsigned int i, n, c, descs_used, err_idx; - __le16 head_flags, flags; - u16 head, id, prev, curr, avail_used_flags; + __le16 head_flags = 0, flags; + u16 head, id, prev = 0, curr, avail_used_flags; START_USE(vq); -- 2.25.1 ^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-07-19 5:15 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-07-14 2:28 [PATCH 0/2] virtio_ring: fix errors to make virtio tools Cai Huoqing 2021-07-14 2:28 ` [PATCH 1/2] virtio_ring: fix error - unknown type name 'spinlock_t' Cai Huoqing 2021-07-19 5:14 ` Cai,Huoqing 2021-07-14 2:28 ` [PATCH 2/2] virtio_ring: fix error - 'prev' and 'head_flags' may be used uninitialized in this function Cai Huoqing
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