Displaying 20 results from an estimated 325 matches for "vring_siz".
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vring_size
2007 Nov 14
1
[PATCH] Remove pagesize parameter from vring_init/vring_size
...#include "linux/lguest_launcher.h"
#include "linux/virtio_config.h"
#include "linux/virtio_net.h"
@@ -1036,7 +1041,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
void *p;
/* First we need some pages for this virtqueue. */
- pages = (vring_size(num_descs, getpagesize()) + getpagesize() - 1)
+ pages = (vring_size(num_descs) + getpagesize() - 1)
/ getpagesize();
p = get_pages(pages);
@@ -1046,7 +1051,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
vq->config.pfn = to_guest_phys(p) / getpagesize();...
2007 Nov 14
1
[PATCH] Remove pagesize parameter from vring_init/vring_size
...#include "linux/lguest_launcher.h"
#include "linux/virtio_config.h"
#include "linux/virtio_net.h"
@@ -1036,7 +1041,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
void *p;
/* First we need some pages for this virtqueue. */
- pages = (vring_size(num_descs, getpagesize()) + getpagesize() - 1)
+ pages = (vring_size(num_descs) + getpagesize() - 1)
/ getpagesize();
p = get_pages(pages);
@@ -1046,7 +1051,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
vq->config.pfn = to_guest_phys(p) / getpagesize();...
2011 Aug 27
1
[PATCH] virtio: fix size computation according to the definition of struct vring_used in vring_size
The patch is against 3.1-rc3.
struct vring_used has two __u16 fields plus array of struct vring_used_elem.
Current vring_size counts the __u16 fields to 3. Fix it to 2 in the patch.
Signed-off-by: Wang Sheng-Hui <shhuiw at gmail.com>
---
include/linux/virtio_ring.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index 4a32cb6..fcd...
2011 Aug 27
1
[PATCH] virtio: fix size computation according to the definition of struct vring_used in vring_size
The patch is against 3.1-rc3.
struct vring_used has two __u16 fields plus array of struct vring_used_elem.
Current vring_size counts the __u16 fields to 3. Fix it to 2 in the patch.
Signed-off-by: Wang Sheng-Hui <shhuiw at gmail.com>
---
include/linux/virtio_ring.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index 4a32cb6..fcd...
2020 Apr 06
0
[PATCH v4 09/12] tools/virtio: switch to virtio_legacy_init/size
...test/virtio_ring_0_9.c b/tools/virtio/ringtest/virtio_ring_0_9.c
index 13a035a390e9..e2ab6ac53966 100644
--- a/tools/virtio/ringtest/virtio_ring_0_9.c
+++ b/tools/virtio/ringtest/virtio_ring_0_9.c
@@ -67,13 +67,13 @@ void alloc_ring(void)
int i;
void *p;
- ret = posix_memalign(&p, 0x1000, vring_size(ring_size, 0x1000));
+ ret = posix_memalign(&p, 0x1000, vring_legacy_size(ring_size, 0x1000));
if (ret) {
perror("Unable to allocate ring buffer.\n");
exit(3);
}
- memset(p, 0, vring_size(ring_size, 0x1000));
- vring_init(&ring, ring_size, p, 0x1000);
+ memset(p, 0, vri...
2020 Apr 06
0
[PATCH v4 09/12] tools/virtio: switch to virtio_legacy_init/size
...test/virtio_ring_0_9.c b/tools/virtio/ringtest/virtio_ring_0_9.c
index 13a035a390e9..e2ab6ac53966 100644
--- a/tools/virtio/ringtest/virtio_ring_0_9.c
+++ b/tools/virtio/ringtest/virtio_ring_0_9.c
@@ -67,13 +67,13 @@ void alloc_ring(void)
int i;
void *p;
- ret = posix_memalign(&p, 0x1000, vring_size(ring_size, 0x1000));
+ ret = posix_memalign(&p, 0x1000, vring_legacy_size(ring_size, 0x1000));
if (ret) {
perror("Unable to allocate ring buffer.\n");
exit(3);
}
- memset(p, 0, vring_size(ring_size, 0x1000));
- vring_init(&ring, ring_size, p, 0x1000);
+ memset(p, 0, vri...
2020 Apr 06
0
[PATCH v5 09/12] tools/virtio: switch to virtio_legacy_init/size
...test/virtio_ring_0_9.c b/tools/virtio/ringtest/virtio_ring_0_9.c
index 13a035a390e9..e2ab6ac53966 100644
--- a/tools/virtio/ringtest/virtio_ring_0_9.c
+++ b/tools/virtio/ringtest/virtio_ring_0_9.c
@@ -67,13 +67,13 @@ void alloc_ring(void)
int i;
void *p;
- ret = posix_memalign(&p, 0x1000, vring_size(ring_size, 0x1000));
+ ret = posix_memalign(&p, 0x1000, vring_legacy_size(ring_size, 0x1000));
if (ret) {
perror("Unable to allocate ring buffer.\n");
exit(3);
}
- memset(p, 0, vring_size(ring_size, 0x1000));
- vring_init(&ring, ring_size, p, 0x1000);
+ memset(p, 0, vri...
2020 Apr 06
0
[PATCH v6 09/12] tools/virtio: switch to virtio_legacy_init/size
...test/virtio_ring_0_9.c b/tools/virtio/ringtest/virtio_ring_0_9.c
index 13a035a390e9..e2ab6ac53966 100644
--- a/tools/virtio/ringtest/virtio_ring_0_9.c
+++ b/tools/virtio/ringtest/virtio_ring_0_9.c
@@ -67,13 +67,13 @@ void alloc_ring(void)
int i;
void *p;
- ret = posix_memalign(&p, 0x1000, vring_size(ring_size, 0x1000));
+ ret = posix_memalign(&p, 0x1000, vring_legacy_size(ring_size, 0x1000));
if (ret) {
perror("Unable to allocate ring buffer.\n");
exit(3);
}
- memset(p, 0, vring_size(ring_size, 0x1000));
- vring_init(&ring, ring_size, p, 0x1000);
+ memset(p, 0, vri...
2020 Apr 07
0
[PATCH v7 13/19] tools/virtio: switch to virtio_legacy_init/size
...test/virtio_ring_0_9.c b/tools/virtio/ringtest/virtio_ring_0_9.c
index 13a035a390e9..e2ab6ac53966 100644
--- a/tools/virtio/ringtest/virtio_ring_0_9.c
+++ b/tools/virtio/ringtest/virtio_ring_0_9.c
@@ -67,13 +67,13 @@ void alloc_ring(void)
int i;
void *p;
- ret = posix_memalign(&p, 0x1000, vring_size(ring_size, 0x1000));
+ ret = posix_memalign(&p, 0x1000, vring_legacy_size(ring_size, 0x1000));
if (ret) {
perror("Unable to allocate ring buffer.\n");
exit(3);
}
- memset(p, 0, vring_size(ring_size, 0x1000));
- vring_init(&ring, ring_size, p, 0x1000);
+ memset(p, 0, vri...
2020 Apr 07
0
[PATCH v8 13/19] tools/virtio: switch to virtio_legacy_init/size
...test/virtio_ring_0_9.c b/tools/virtio/ringtest/virtio_ring_0_9.c
index 13a035a390e9..e2ab6ac53966 100644
--- a/tools/virtio/ringtest/virtio_ring_0_9.c
+++ b/tools/virtio/ringtest/virtio_ring_0_9.c
@@ -67,13 +67,13 @@ void alloc_ring(void)
int i;
void *p;
- ret = posix_memalign(&p, 0x1000, vring_size(ring_size, 0x1000));
+ ret = posix_memalign(&p, 0x1000, vring_legacy_size(ring_size, 0x1000));
if (ret) {
perror("Unable to allocate ring buffer.\n");
exit(3);
}
- memset(p, 0, vring_size(ring_size, 0x1000));
- vring_init(&ring, ring_size, p, 0x1000);
+ memset(p, 0, vri...
2007 Nov 15
0
[PATCH] Fix vring_init/vring_size to take unsigned long
...ring *vr, unsigned int num, void *p,
- unsigned int pagesize)
+ unsigned long pagesize)
{
vr->num = num;
vr->desc = p;
@@ -98,7 +98,7 @@ static inline void vring_init(struct vring *vr, unsigned int num, void *p,
& ~(pagesize - 1));
}
-static inline unsigned vring_size(unsigned int num, unsigned int pagesize)
+static inline unsigned vring_size(unsigned int num, unsigned long pagesize)
{
return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (2 + num)
+ pagesize - 1) & ~(pagesize - 1))
2007 Nov 15
0
[PATCH] Fix vring_init/vring_size to take unsigned long
...ring *vr, unsigned int num, void *p,
- unsigned int pagesize)
+ unsigned long pagesize)
{
vr->num = num;
vr->desc = p;
@@ -98,7 +98,7 @@ static inline void vring_init(struct vring *vr, unsigned int num, void *p,
& ~(pagesize - 1));
}
-static inline unsigned vring_size(unsigned int num, unsigned int pagesize)
+static inline unsigned vring_size(unsigned int num, unsigned long pagesize)
{
return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (2 + num)
+ pagesize - 1) & ~(pagesize - 1))
2014 Aug 27
2
[PATCH 3/3] virtio_pci: Use the DMA API for virtqueues
...ress */
>
> /* the list node for the virtqueues list */
> struct list_head node;
> @@ -417,15 +418,16 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
> info->num = num;
> info->msix_vector = msix_vec;
>
> - size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
> - info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
> + size = vring_size(num, VIRTIO_PCI_VRING_ALIGN);
> + info->queue = dma_zalloc_coherent(vdev->dev.parent, size,
> + &info->queue_dma_addr, GFP_KERNEL);
> if (in...
2014 Aug 27
2
[PATCH 3/3] virtio_pci: Use the DMA API for virtqueues
...ress */
>
> /* the list node for the virtqueues list */
> struct list_head node;
> @@ -417,15 +418,16 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
> info->num = num;
> info->msix_vector = msix_vec;
>
> - size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
> - info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
> + size = vring_size(num, VIRTIO_PCI_VRING_ALIGN);
> + info->queue = dma_zalloc_coherent(vdev->dev.parent, size,
> + &info->queue_dma_addr, GFP_KERNEL);
> if (in...
2020 Apr 06
1
[PATCH v3 1/2] virtio: stop using legacy struct vring in kernel
...ce builds.
+ */
+struct vring {
+ unsigned int num;
+
+ struct vring_desc *desc;
+
+ struct vring_avail *avail;
+
+ struct vring_used *used;
+};
+
static inline void vring_init(struct vring *vr, unsigned int num, void *p,
unsigned long align)
{
@@ -180,6 +185,7 @@ static inline unsigned vring_size(unsigned int num, unsigned long align)
+ align - 1) & ~(align - 1))
+ sizeof(__virtio16) * 3 + sizeof(struct vring_used_elem) * num;
}
+#endif
/* The following is used with USED_EVENT_IDX and AVAIL_EVENT_IDX */
/* Assuming a given event_idx value from the other side, if
diff --git...
2014 Sep 17
4
[PATCH v5 2/3] virtio_pci: Use the DMA API for virtqueues when possible
...ueue *vq),
> const char *name,
> @@ -416,21 +462,30 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
>
> info->num = num;
> info->msix_vector = msix_vec;
> + info->use_dma_api = vp_use_dma_api();
>
> - size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
> - info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
> + size = vring_size(num, VIRTIO_PCI_VRING_ALIGN);
> + if (info->use_dma_api) {
> + info->queue = dma_zalloc_coherent(vdev->dev.parent, size,
> + &info->queue...
2014 Sep 17
4
[PATCH v5 2/3] virtio_pci: Use the DMA API for virtqueues when possible
...ueue *vq),
> const char *name,
> @@ -416,21 +462,30 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
>
> info->num = num;
> info->msix_vector = msix_vec;
> + info->use_dma_api = vp_use_dma_api();
>
> - size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
> - info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
> + size = vring_size(num, VIRTIO_PCI_VRING_ALIGN);
> + if (info->use_dma_api) {
> + info->queue = dma_zalloc_coherent(vdev->dev.parent, size,
> + &info->queue...
2014 Sep 17
1
[PATCH v5 2/3] virtio_pci: Use the DMA API for virtqueues when possible
...ueue *vq),
> const char *name,
> @@ -416,21 +462,30 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
>
> info->num = num;
> info->msix_vector = msix_vec;
> + info->use_dma_api = vp_use_dma_api();
>
> - size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
> - info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
> + size = vring_size(num, VIRTIO_PCI_VRING_ALIGN);
> + if (info->use_dma_api) {
> + info->queue = dma_zalloc_coherent(vdev->dev.parent, size,
> + &info->queue...
2014 Sep 17
1
[PATCH v5 2/3] virtio_pci: Use the DMA API for virtqueues when possible
...ueue *vq),
> const char *name,
> @@ -416,21 +462,30 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
>
> info->num = num;
> info->msix_vector = msix_vec;
> + info->use_dma_api = vp_use_dma_api();
>
> - size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
> - info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
> + size = vring_size(num, VIRTIO_PCI_VRING_ALIGN);
> + if (info->use_dma_api) {
> + info->queue = dma_zalloc_coherent(vdev->dev.parent, size,
> + &info->queue...
2020 Apr 06
0
[PATCH v4 08/12] virtio_ring: switch to virtio_legacy_init/size
...b/drivers/virtio/virtio_ring.c
index 58b96baa8d48..2a2b12449bac 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -867,8 +867,10 @@ static struct virtqueue *vring_create_virtqueue_split(
}
/* TODO: allocate each queue chunk individually */
- for (; num && vring_size(num, vring_align) > PAGE_SIZE; num /= 2) {
- queue = vring_alloc_queue(vdev, vring_size(num, vring_align),
+ for (; num && vring_legacy_size(num, vring_align) > PAGE_SIZE;
+ num /= 2) {
+ queue = vring_alloc_queue(vdev,
+ vring_legacy_size(num, vring_align),
&...