Displaying 8 results from an estimated 8 matches for "zero_size_ptr".
2008 Dec 20
1
[PATCH 2/3] virtio: indirect ring entries (VIRTIO_RING_F_INDIRECT_DESC)
...ng_virtqueue *vq,
> + struct scatterlist sg[],
> + unsigned int out,
> + unsigned int in)
> +{
> + struct vring_desc *desc;
> + unsigned head;
> + int i;
> +
> + desc = kmalloc((out + in) * sizeof(struct vring_desc), GFP_ATOMIC);
kmalloc() returns ZERO_SIZE_PTR, if (out + in) == 0
> + if (!desc)
> + return vq->vring.num;
> +
> + /* Transfer entries from the sg list into the indirect page */
> + for (i = 0; i < out; i++) {
> + desc[i].flags = VRING_DESC_F_NEXT;
> + desc[i].addr = sg_phys(sg);
> + desc[i].len = sg->leng...
2008 Dec 20
1
[PATCH 2/3] virtio: indirect ring entries (VIRTIO_RING_F_INDIRECT_DESC)
...ng_virtqueue *vq,
> + struct scatterlist sg[],
> + unsigned int out,
> + unsigned int in)
> +{
> + struct vring_desc *desc;
> + unsigned head;
> + int i;
> +
> + desc = kmalloc((out + in) * sizeof(struct vring_desc), GFP_ATOMIC);
kmalloc() returns ZERO_SIZE_PTR, if (out + in) == 0
> + if (!desc)
> + return vq->vring.num;
> +
> + /* Transfer entries from the sg list into the indirect page */
> + for (i = 0; i < out; i++) {
> + desc[i].flags = VRING_DESC_F_NEXT;
> + desc[i].addr = sg_phys(sg);
> + desc[i].len = sg->leng...
2020 Jun 17
4
[PATCH RFC v8 02/11] vhost: use batched get_vq_desc version
On 2020/6/11 ??7:34, Michael S. Tsirkin wrote:
> static void vhost_vq_free_iovecs(struct vhost_virtqueue *vq)
> {
> kfree(vq->descs);
> @@ -394,6 +400,9 @@ static long vhost_dev_alloc_iovecs(struct vhost_dev *dev)
> for (i = 0; i < dev->nvqs; ++i) {
> vq = dev->vqs[i];
> vq->max_descs = dev->iov_limit;
> + if
2020 Jun 17
4
[PATCH RFC v8 02/11] vhost: use batched get_vq_desc version
On 2020/6/11 ??7:34, Michael S. Tsirkin wrote:
> static void vhost_vq_free_iovecs(struct vhost_virtqueue *vq)
> {
> kfree(vq->descs);
> @@ -394,6 +400,9 @@ static long vhost_dev_alloc_iovecs(struct vhost_dev *dev)
> for (i = 0; i < dev->nvqs; ++i) {
> vq = dev->vqs[i];
> vq->max_descs = dev->iov_limit;
> + if
2020 Jun 23
0
[PATCH RFC v8 02/11] vhost: use batched get_vq_desc version
...t;>>> worker.
>>>>
>>>> Thanks
>>> It doesn't need iovecs at all, right?
>>>
>>> -- MST
>>
>> Yes, so we may choose to bypass the iovecs as well.
>>
>> Thanks
>>
> I think that the kmalloc_array returns ZERO_SIZE_PTR for all of them
> in that case, so I didn't bother to skip the kmalloc_array parts.
> Would you prefer to skip them all and let them NULL? Or have I
> misunderstood what you mean?
I'm ok with either approach, but my understanding is that Michael wants
to skip them all.
Thanks...
2020 Jun 23
0
[PATCH RFC v8 02/11] vhost: use batched get_vq_desc version
...; >>
> > >> Thanks
> > > It doesn't need iovecs at all, right?
> > >
> > > -- MST
> >
> >
> > Yes, so we may choose to bypass the iovecs as well.
> >
> > Thanks
> >
>
> I think that the kmalloc_array returns ZERO_SIZE_PTR for all of them
> in that case, so I didn't bother to skip the kmalloc_array parts.
> Would you prefer to skip them all and let them NULL? Or have I
> misunderstood what you mean?
>
> Thanks!
Sorry about being unclear. I just meant that it seems cleaner
to check for iov_limit b...
2018 Feb 12
5
[PATCH] headers: untangle kmemleak.h from mm.h
...-
security/apparmor/lsm.c | 1 -
21 files changed, 9 insertions(+), 14 deletions(-)
--- lnx-416-rc1.orig/include/linux/slab.h
+++ lnx-416-rc1/include/linux/slab.h
@@ -125,7 +125,6 @@
#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \
(unsigned long)ZERO_SIZE_PTR)
-#include <linux/kmemleak.h>
#include <linux/kasan.h>
struct mem_cgroup;
--- lnx-416-rc1.orig/kernel/ucount.c
+++ lnx-416-rc1/kernel/ucount.c
@@ -10,6 +10,7 @@
#include <linux/slab.h>
#include <linux/cred.h>
#include <linux/hash.h>
+#include <linux/kmemlea...
2018 Feb 12
5
[PATCH] headers: untangle kmemleak.h from mm.h
...-
security/apparmor/lsm.c | 1 -
21 files changed, 9 insertions(+), 14 deletions(-)
--- lnx-416-rc1.orig/include/linux/slab.h
+++ lnx-416-rc1/include/linux/slab.h
@@ -125,7 +125,6 @@
#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \
(unsigned long)ZERO_SIZE_PTR)
-#include <linux/kmemleak.h>
#include <linux/kasan.h>
struct mem_cgroup;
--- lnx-416-rc1.orig/kernel/ucount.c
+++ lnx-416-rc1/kernel/ucount.c
@@ -10,6 +10,7 @@
#include <linux/slab.h>
#include <linux/cred.h>
#include <linux/hash.h>
+#include <linux/kmemlea...