Displaying 20 results from an estimated 227 matches for "cpu_to_vhost16".
2018 Feb 27
1
[PATCH RFC 2/2] vhost: packed ring support
On Wed, Feb 14, 2018 at 10:37:09AM +0800, Jason Wang wrote:
[...]
> +static void set_desc_used(struct vhost_virtqueue *vq,
> + struct vring_desc_packed *desc, bool wrap_counter)
> +{
> + __virtio16 flags = desc->flags;
> +
> + if (wrap_counter) {
> + desc->flags |= cpu_to_vhost16(vq, DESC_AVAIL);
> + desc->flags |= cpu_to_vhost16(vq, DESC_USED);
> + } else {
> + desc->flags &= ~cpu_to_vhost16(vq, DESC_AVAIL);
> + desc->flags &= ~cpu_to_vhost16(vq, DESC_USED);
> + }
> +
> + desc->flags = flags;
The `desc->flags` is restored aft...
2014 Nov 24
2
[PATCH v3 26/41] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 24
2
[PATCH v3 26/41] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2019 Mar 06
1
[RFC PATCH V2 2/5] vhost: fine grain userspace memory accessors
...-- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -869,6 +869,34 @@ static inline void __user *__vhost_get_user(struct vhost_virtqueue *vq,
> ret; \
> })
>
> +static inline int vhost_put_avail_event(struct vhost_virtqueue *vq)
> +{
> + return vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
> + vhost_avail_event(vq));
> +}
> +
> +static inline int vhost_put_used(struct vhost_virtqueue *vq,
> + struct vring_used_elem *head, int idx,
> + int count)
> +{
> + return vhost_copy_to_user(vq, vq->used->ring + idx, head,
>...
2019 Mar 06
1
[RFC PATCH V2 2/5] vhost: fine grain userspace memory accessors
...-- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -869,6 +869,34 @@ static inline void __user *__vhost_get_user(struct vhost_virtqueue *vq,
> ret; \
> })
>
> +static inline int vhost_put_avail_event(struct vhost_virtqueue *vq)
> +{
> + return vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
> + vhost_avail_event(vq));
> +}
> +
> +static inline int vhost_put_used(struct vhost_virtqueue *vq,
> + struct vring_used_elem *head, int idx,
> + int count)
> +{
> + return vhost_copy_to_user(vq, vq->used->ring + idx, head,
>...
2018 Jul 03
0
[PATCH net-next 8/8] vhost: event suppression for packed ring
...+
+ (off_wrap - (void __user *)vq->device_event),
+ sizeof(vq->device_event->off_wrap));
+ if (vq->log_ctx)
+ eventfd_signal(vq->log_ctx, 1);
+ }
+ return 0;
+}
+
static int vhost_update_avail_event(struct vhost_virtqueue *vq, u16 avail_event)
{
if (vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
@@ -2756,16 +2829,13 @@ int vhost_add_used_n(struct vhost_virtqueue *vq,
}
EXPORT_SYMBOL_GPL(vhost_add_used_n);
-static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq)
+static bool vhost_notify_split(struct vhost_dev *dev,
+ struct vhost_virt...
2014 Dec 01
0
[PATCH v8 33/50] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Dec 01
0
[PATCH v8 33/50] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 25
0
[PATCH v4 27/42] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 27
0
[PATCH v5 30/45] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 27
0
[PATCH v6 31/46] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 25
0
[PATCH v4 27/42] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 27
0
[PATCH v5 30/45] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 27
0
[PATCH v6 31/46] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 24
0
[PATCH v3 26/41] vhost: virtio 1.0 endian-ness support
...*wqh,
> poll_table *pt)
> @@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
> static int vhost_update_used_flags(struct vhost_virtqueue *vq)
> {
> void __user *used;
> - if (__put_user(vq->used_flags, &vq->used->flags) < 0)
> + if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
> return -EFAULT;
> if (unlikely(vq->log_used)) {
> /* Make sure the flag is seen before log. */
> @@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
>
> static int vhost_upd...
2014 Nov 24
0
[PATCH v3 26/41] vhost: virtio 1.0 endian-ness support
...*wqh,
> poll_table *pt)
> @@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
> static int vhost_update_used_flags(struct vhost_virtqueue *vq)
> {
> void __user *used;
> - if (__put_user(vq->used_flags, &vq->used->flags) < 0)
> + if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
> return -EFAULT;
> if (unlikely(vq->log_used)) {
> /* Make sure the flag is seen before log. */
> @@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
>
> static int vhost_upd...
2014 Nov 30
3
[PATCH v7 31/46] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2014 Nov 30
3
[PATCH v7 31/46] vhost: virtio 1.0 endian-ness support
...ruct file *file, wait_queue_head_t *wqh,
poll_table *pt)
@@ -1001,7 +1001,7 @@ EXPORT_SYMBOL_GPL(vhost_log_write);
static int vhost_update_used_flags(struct vhost_virtqueue *vq)
{
void __user *used;
- if (__put_user(vq->used_flags, &vq->used->flags) < 0)
+ if (__put_user(cpu_to_vhost16(vq, vq->used_flags), &vq->used->flags) < 0)
return -EFAULT;
if (unlikely(vq->log_used)) {
/* Make sure the flag is seen before log. */
@@ -1019,7 +1019,7 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
static int vhost_update_avail_event(struct vhost_...
2018 Mar 30
1
[RFC PATCH V2 8/8] vhost: event suppression for packed ring
...interrupts.
> + */
> + smp_mb();
> +
> + if (vhost_get_avail(vq, event_flags,
> + &vq->driver_event->desc_event_flags) < 0) {
> + vq_err(vq, "Failed to get driver desc_event_flags");
> + return true;
> + }
> +
> + if (!(event_flags & cpu_to_vhost16(vq, RING_EVENT_FLAGS_DESC)))
> + return event_flags ==
> + cpu_to_vhost16(vq, RING_EVENT_FLAGS_ENABLE);
Maybe it would be better to not use '&' here. Because these flags
are not defined as bits which can be ORed or ANDed. Instead, they
are defined as values:
0x0 enable...
2019 Mar 06
0
[RFC PATCH V2 2/5] vhost: fine grain userspace memory accessors
...ost.c
index 400aa78..29709e7 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -869,6 +869,34 @@ static inline void __user *__vhost_get_user(struct vhost_virtqueue *vq,
ret; \
})
+static inline int vhost_put_avail_event(struct vhost_virtqueue *vq)
+{
+ return vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
+ vhost_avail_event(vq));
+}
+
+static inline int vhost_put_used(struct vhost_virtqueue *vq,
+ struct vring_used_elem *head, int idx,
+ int count)
+{
+ return vhost_copy_to_user(vq, vq->used->ring + idx, head,
+ count * sizeof(*head));
+}
+
+static...