* [PATCH v2 0/2] virtio_ring: check desc == NULL when packed and indirect
@ 2021-09-27 10:54 Xuan Zhuo
2021-09-27 10:54 ` [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed Xuan Zhuo
2021-09-27 10:54 ` [PATCH v2 2/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
0 siblings, 2 replies; 7+ messages in thread
From: Xuan Zhuo @ 2021-09-27 10:54 UTC (permalink / raw)
To: virtualization; +Cc: David S. Miller, Tiwei Bie, Michael S. Tsirkin
In the case of packed, use indirect desc, since desc is allocated by
kmalloc_array(), we should check whether its return value is NULL.
This patch alloc desc inside virtqueue_add_packe(), if desc == NULL,
fall back to not using indirect.
v2:
Separate the style fix into a single patch.
Xuan Zhuo (2):
virtio_ring: fix style of virtqueue_add_indirect_packed
virtio_ring: check desc == NULL when packed and indirect
drivers/virtio/virtio_ring.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)
--
2.31.0
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^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed
2021-09-27 10:54 [PATCH v2 0/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
@ 2021-09-27 10:54 ` Xuan Zhuo
2021-09-28 3:14 ` Jason Wang
2021-09-27 10:54 ` [PATCH v2 2/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
1 sibling, 1 reply; 7+ messages in thread
From: Xuan Zhuo @ 2021-09-27 10:54 UTC (permalink / raw)
To: virtualization; +Cc: David S. Miller, Tiwei Bie, Michael S. Tsirkin
Fix the style problem of virtqueue_add_indirect_packed(). The next patch
involves the modification of this function.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
drivers/virtio/virtio_ring.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index dd95dfd85e98..91a46c4da87d 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1050,12 +1050,12 @@ static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
}
static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
- struct scatterlist *sgs[],
- unsigned int total_sg,
- unsigned int out_sgs,
- unsigned int in_sgs,
- void *data,
- gfp_t gfp)
+ struct scatterlist *sgs[],
+ unsigned int total_sg,
+ unsigned int out_sgs,
+ unsigned int in_sgs,
+ void *data,
+ gfp_t gfp)
{
struct vring_packed_desc *desc;
struct scatterlist *sg;
--
2.31.0
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^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 2/2] virtio_ring: check desc == NULL when packed and indirect
2021-09-27 10:54 [PATCH v2 0/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
2021-09-27 10:54 ` [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed Xuan Zhuo
@ 2021-09-27 10:54 ` Xuan Zhuo
2021-09-28 3:20 ` Jason Wang
1 sibling, 1 reply; 7+ messages in thread
From: Xuan Zhuo @ 2021-09-27 10:54 UTC (permalink / raw)
To: virtualization; +Cc: David S. Miller, Tiwei Bie, Michael S. Tsirkin
In the case of packed, use indirect desc, since desc is allocated by
kmalloc_array(), we should check whether its return value is NULL.
This patch alloc desc inside virtqueue_add_packe(), if desc == NULL,
fall back to not using indirect.
Fixes: 1ce9e6055fa ("virtio_ring: introduce packed ring support")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
drivers/virtio/virtio_ring.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 91a46c4da87d..62323c27bfe4 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1051,20 +1051,19 @@ static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
struct scatterlist *sgs[],
+ struct vring_packed_desc *desc,
unsigned int total_sg,
unsigned int out_sgs,
unsigned int in_sgs,
void *data,
gfp_t gfp)
{
- struct vring_packed_desc *desc;
struct scatterlist *sg;
unsigned int i, n, err_idx;
u16 head, id;
dma_addr_t addr;
head = vq->packed.next_avail_idx;
- desc = alloc_indirect_packed(total_sg, gfp);
if (unlikely(vq->vq.num_free < 1)) {
pr_debug("Can't add buf len 1 - avail = 0\n");
@@ -1191,9 +1190,14 @@ static inline int virtqueue_add_packed(struct virtqueue *_vq,
BUG_ON(total_sg == 0);
- if (virtqueue_use_indirect(_vq, total_sg))
- return virtqueue_add_indirect_packed(vq, sgs, total_sg,
- out_sgs, in_sgs, data, gfp);
+ if (virtqueue_use_indirect(_vq, total_sg)) {
+ desc = alloc_indirect_packed(total_sg, gfp);
+ if (desc)
+ return virtqueue_add_indirect_packed(vq, sgs, desc,
+ total_sg,
+ out_sgs, in_sgs,
+ data, gfp);
+ }
head = vq->packed.next_avail_idx;
avail_used_flags = vq->packed.avail_used_flags;
--
2.31.0
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^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed
2021-09-27 10:54 ` [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed Xuan Zhuo
@ 2021-09-28 3:14 ` Jason Wang
2021-10-19 8:15 ` Xuan Zhuo
0 siblings, 1 reply; 7+ messages in thread
From: Jason Wang @ 2021-09-28 3:14 UTC (permalink / raw)
To: Xuan Zhuo; +Cc: Michael S. Tsirkin, David S. Miller, Tiwei Bie, virtualization
On Mon, Sep 27, 2021 at 6:54 PM Xuan Zhuo <xuanzhuo@linux.alibaba.com> wrote:
>
> Fix the style problem of virtqueue_add_indirect_packed(). The next patch
> involves the modification of this function.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> ---
> drivers/virtio/virtio_ring.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
Acked-by: Jason Wang <jasowang@redhat.com>
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index dd95dfd85e98..91a46c4da87d 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -1050,12 +1050,12 @@ static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
> }
>
> static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
> - struct scatterlist *sgs[],
> - unsigned int total_sg,
> - unsigned int out_sgs,
> - unsigned int in_sgs,
> - void *data,
> - gfp_t gfp)
> + struct scatterlist *sgs[],
> + unsigned int total_sg,
> + unsigned int out_sgs,
> + unsigned int in_sgs,
> + void *data,
> + gfp_t gfp)
> {
> struct vring_packed_desc *desc;
> struct scatterlist *sg;
> --
> 2.31.0
>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v2 2/2] virtio_ring: check desc == NULL when packed and indirect
2021-09-27 10:54 ` [PATCH v2 2/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
@ 2021-09-28 3:20 ` Jason Wang
0 siblings, 0 replies; 7+ messages in thread
From: Jason Wang @ 2021-09-28 3:20 UTC (permalink / raw)
To: Xuan Zhuo; +Cc: Michael S. Tsirkin, David S. Miller, Tiwei Bie, virtualization
On Mon, Sep 27, 2021 at 6:54 PM Xuan Zhuo <xuanzhuo@linux.alibaba.com> wrote:
>
> In the case of packed, use indirect desc, since desc is allocated by
> kmalloc_array(), we should check whether its return value is NULL.
>
> This patch alloc desc inside virtqueue_add_packe(), if desc == NULL,
> fall back to not using indirect.
>
> Fixes: 1ce9e6055fa ("virtio_ring: introduce packed ring support")
> Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
> ---
> drivers/virtio/virtio_ring.c | 14 +++++++++-----
> 1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 91a46c4da87d..62323c27bfe4 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -1051,20 +1051,19 @@ static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
>
> static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
> struct scatterlist *sgs[],
> + struct vring_packed_desc *desc,
> unsigned int total_sg,
> unsigned int out_sgs,
> unsigned int in_sgs,
> void *data,
> gfp_t gfp)
> {
> - struct vring_packed_desc *desc;
> struct scatterlist *sg;
> unsigned int i, n, err_idx;
> u16 head, id;
> dma_addr_t addr;
>
> head = vq->packed.next_avail_idx;
> - desc = alloc_indirect_packed(total_sg, gfp);
>
> if (unlikely(vq->vq.num_free < 1)) {
> pr_debug("Can't add buf len 1 - avail = 0\n");
> @@ -1191,9 +1190,14 @@ static inline int virtqueue_add_packed(struct virtqueue *_vq,
>
> BUG_ON(total_sg == 0);
>
> - if (virtqueue_use_indirect(_vq, total_sg))
> - return virtqueue_add_indirect_packed(vq, sgs, total_sg,
> - out_sgs, in_sgs, data, gfp);
> + if (virtqueue_use_indirect(_vq, total_sg)) {
> + desc = alloc_indirect_packed(total_sg, gfp);
> + if (desc)
> + return virtqueue_add_indirect_packed(vq, sgs, desc,
> + total_sg,
> + out_sgs, in_sgs,
> + data, gfp);
> + }
>
> head = vq->packed.next_avail_idx;
> avail_used_flags = vq->packed.avail_used_flags;
> --
> 2.31.0
>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed
2021-09-28 3:14 ` Jason Wang
@ 2021-10-19 8:15 ` Xuan Zhuo
2021-10-19 10:38 ` Michael S. Tsirkin
0 siblings, 1 reply; 7+ messages in thread
From: Xuan Zhuo @ 2021-10-19 8:15 UTC (permalink / raw)
To: Jason Wang; +Cc: Michael S. Tsirkin, David S. Miller, Tiwei Bie, virtualization
On Tue, 28 Sep 2021 11:14:47 +0800, Jason Wang <jasowang@redhat.com> wrote:
> On Mon, Sep 27, 2021 at 6:54 PM Xuan Zhuo <xuanzhuo@linux.alibaba.com> wrote:
> >
> > Fix the style problem of virtqueue_add_indirect_packed(). The next patch
> > involves the modification of this function.
> >
> > Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> > ---
> > drivers/virtio/virtio_ring.c | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
>
> Acked-by: Jason Wang <jasowang@redhat.com>
Hi, this patch set seems to have not been merged, is there something wrong with me?
Thanks.
>
> >
> > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> > index dd95dfd85e98..91a46c4da87d 100644
> > --- a/drivers/virtio/virtio_ring.c
> > +++ b/drivers/virtio/virtio_ring.c
> > @@ -1050,12 +1050,12 @@ static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
> > }
> >
> > static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
> > - struct scatterlist *sgs[],
> > - unsigned int total_sg,
> > - unsigned int out_sgs,
> > - unsigned int in_sgs,
> > - void *data,
> > - gfp_t gfp)
> > + struct scatterlist *sgs[],
> > + unsigned int total_sg,
> > + unsigned int out_sgs,
> > + unsigned int in_sgs,
> > + void *data,
> > + gfp_t gfp)
> > {
> > struct vring_packed_desc *desc;
> > struct scatterlist *sg;
> > --
> > 2.31.0
> >
>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed
2021-10-19 8:15 ` Xuan Zhuo
@ 2021-10-19 10:38 ` Michael S. Tsirkin
0 siblings, 0 replies; 7+ messages in thread
From: Michael S. Tsirkin @ 2021-10-19 10:38 UTC (permalink / raw)
To: Xuan Zhuo; +Cc: David S. Miller, Tiwei Bie, virtualization
On Tue, Oct 19, 2021 at 04:15:41PM +0800, Xuan Zhuo wrote:
> On Tue, 28 Sep 2021 11:14:47 +0800, Jason Wang <jasowang@redhat.com> wrote:
> > On Mon, Sep 27, 2021 at 6:54 PM Xuan Zhuo <xuanzhuo@linux.alibaba.com> wrote:
> > >
> > > Fix the style problem of virtqueue_add_indirect_packed(). The next patch
> > > involves the modification of this function.
> > >
> > > Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> > > ---
> > > drivers/virtio/virtio_ring.c | 12 ++++++------
> > > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > Acked-by: Jason Wang <jasowang@redhat.com>
>
> Hi, this patch set seems to have not been merged, is there something wrong with me?
>
> Thanks.
there's no problem as such. something like
"align arguments to the open ( to make it look prettier"
would be more correct.
> >
> > >
> > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> > > index dd95dfd85e98..91a46c4da87d 100644
> > > --- a/drivers/virtio/virtio_ring.c
> > > +++ b/drivers/virtio/virtio_ring.c
> > > @@ -1050,12 +1050,12 @@ static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
> > > }
> > >
> > > static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
> > > - struct scatterlist *sgs[],
> > > - unsigned int total_sg,
> > > - unsigned int out_sgs,
> > > - unsigned int in_sgs,
> > > - void *data,
> > > - gfp_t gfp)
> > > + struct scatterlist *sgs[],
> > > + unsigned int total_sg,
> > > + unsigned int out_sgs,
> > > + unsigned int in_sgs,
> > > + void *data,
> > > + gfp_t gfp)
> > > {
> > > struct vring_packed_desc *desc;
> > > struct scatterlist *sg;
> > > --
> > > 2.31.0
> > >
> >
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^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-10-19 10:38 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-09-27 10:54 [PATCH v2 0/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
2021-09-27 10:54 ` [PATCH v2 1/2] virtio_ring: fix style of virtqueue_add_indirect_packed Xuan Zhuo
2021-09-28 3:14 ` Jason Wang
2021-10-19 8:15 ` Xuan Zhuo
2021-10-19 10:38 ` Michael S. Tsirkin
2021-09-27 10:54 ` [PATCH v2 2/2] virtio_ring: check desc == NULL when packed and indirect Xuan Zhuo
2021-09-28 3:20 ` Jason Wang
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