Displaying 8 results from an estimated 8 matches for "vmalloc_to_sgt".
2019 Sep 05
2
[PATCH v2] drm/virtio: Use vmalloc for command buffer allocations.
...sor_func(struct work_struct *work)
wake_up(&vgdev->cursorq.ack_queue);
}
+/* How many bytes left in this page. */
+static unsigned int rest_of_page(void *data)
+{
+ return PAGE_SIZE - offset_in_page(data);
+}
+
+/* Create sg_table from a vmalloc'd buffer. */
+static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
+{
+ int nents, ret, s, i;
+ struct sg_table *sgt;
+ struct scatterlist *sg;
+ struct page *pg;
+
+ *sg_ents = 0;
+
+ sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
+ if (!sgt)
+ return NULL;
+
+ nents = DIV_ROUND_UP(size, PAGE_SIZE) + 1;
+ ret = sg_alloc_table(s...
2019 Sep 05
2
[PATCH v2] drm/virtio: Use vmalloc for command buffer allocations.
...sor_func(struct work_struct *work)
wake_up(&vgdev->cursorq.ack_queue);
}
+/* How many bytes left in this page. */
+static unsigned int rest_of_page(void *data)
+{
+ return PAGE_SIZE - offset_in_page(data);
+}
+
+/* Create sg_table from a vmalloc'd buffer. */
+static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
+{
+ int nents, ret, s, i;
+ struct sg_table *sgt;
+ struct scatterlist *sg;
+ struct page *pg;
+
+ *sg_ents = 0;
+
+ sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
+ if (!sgt)
+ return NULL;
+
+ nents = DIV_ROUND_UP(size, PAGE_SIZE) + 1;
+ ret = sg_alloc_table(s...
2019 Sep 06
0
[PATCH v2] drm/virtio: Use vmalloc for command buffer allocations.
> +/* How many bytes left in this page. */
> +static unsigned int rest_of_page(void *data)
> +{
> + return PAGE_SIZE - offset_in_page(data);
> +}
Not needed.
> +/* Create sg_table from a vmalloc'd buffer. */
> +static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
> +{
> + int nents, ret, s, i;
> + struct sg_table *sgt;
> + struct scatterlist *sg;
> + struct page *pg;
> +
> + *sg_ents = 0;
> +
> + sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
> + if (!sgt)
> + return NULL;
> +
> + ne...
2019 Sep 12
1
[PATCH] drm/virtio: Fix warning in virtio_gpu_queue_fenced_ctrl_buffer.
...pu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 9f9b782dd332..80176f379ad5 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -358,7 +358,7 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
sgt = vmalloc_to_sgt(vbuf->data_buf, vbuf->data_size,
&outcnt);
if (!sgt)
- return -ENOMEM;
+ return;
vout = sgt->sgl;
} else {
sg_init_one(&sg, vbuf->data_buf, vbuf->data_size);
--
2.23.0.162.g0b9fbb3734-goog
2019 Sep 10
0
[PATCH v3 2/2] drm/virtio: Use vmalloc for command buffer allocations.
...t;data_buf);
+ kvfree(vbuf->data_buf);
kmem_cache_free(vgdev->vbufs, vbuf);
}
@@ -251,13 +251,54 @@ void virtio_gpu_dequeue_cursor_func(struct work_struct *work)
wake_up(&vgdev->cursorq.ack_queue);
}
+/* Create sg_table from a vmalloc'd buffer. */
+static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
+{
+ int ret, s, i;
+ struct sg_table *sgt;
+ struct scatterlist *sg;
+ struct page *pg;
+
+ if (WARN_ON(!PAGE_ALIGNED(data)))
+ return NULL;
+
+ sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
+ if (!sgt)
+ return NULL;
+
+ *sg_ents = DIV_ROUND_UP(size, PAGE_SIZ...
2019 Sep 11
1
[PATCH v4 2/2] drm/virtio: Use vmalloc for command buffer allocations.
...t;data_buf);
+ kvfree(vbuf->data_buf);
kmem_cache_free(vgdev->vbufs, vbuf);
}
@@ -256,13 +256,54 @@ void virtio_gpu_dequeue_cursor_func(struct work_struct *work)
wake_up(&vgdev->cursorq.ack_queue);
}
+/* Create sg_table from a vmalloc'd buffer. */
+static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
+{
+ int ret, s, i;
+ struct sg_table *sgt;
+ struct scatterlist *sg;
+ struct page *pg;
+
+ if (WARN_ON(!PAGE_ALIGNED(data)))
+ return NULL;
+
+ sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
+ if (!sgt)
+ return NULL;
+
+ *sg_ents = DIV_ROUND_UP(size, PAGE_SIZ...
2020 Sep 08
0
[PATCH 2/3] drm/virtio: return virtio_gpu_queue errors
...hanged, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index c93c2db35aaf..b1884e6e242c 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -320,13 +320,13 @@ static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
return sgt;
}
-static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev,
- struct virtio_gpu_vbuffer *vbuf,
- struct virtio_gpu_fence *fence,
- int elemcnt,
- struct scatterlist **sgs,
- int outc...
2019 Sep 02
1
[PATCH] drm/virtio: Use vmalloc for command buffer allocations.
On Fri, Aug 30, 2019 at 10:49:25AM -0700, David Riley wrote:
> Hi Gerd,
>
> On Fri, Aug 30, 2019 at 4:16 AM Gerd Hoffmann <kraxel at redhat.com> wrote:
> >
> > Hi,
> >
> > > > > - kfree(vbuf->data_buf);
> > > > > + kvfree(vbuf->data_buf);
> > > >
> > > > if (is_vmalloc_addr(vbuf->data_buf))