Displaying 20 results from an estimated 129 matches for "vhost_umem_node".
2020 Feb 20
0
[PATCH V3 1/5] vhost: factor out IOTLB
...44
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -50,10 +50,6 @@ enum {
#define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
#define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
-INTERVAL_TREE_DEFINE(struct vhost_umem_node,
- rb, __u64, __subtree_last,
- START, LAST, static inline, vhost_umem_interval_tree);
-
#ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
static void vhost_disable_cross_endian(struct vhost_virtqueue *vq)
{
@@ -581,21 +577,25 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
}
EXPORT_SYMBO...
2019 Apr 09
2
[PATCH net] vhost: reject zero size iova range
...ivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5ace833de746..351af88231ad 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -911,8 +911,12 @@ static int vhost_new_umem_range(struct vhost_umem *umem,
u64 start, u64 size, u64 end,
u64 userspace_addr, int perm)
{
- struct vhost_umem_node *tmp, *node = kmalloc(sizeof(*node), GFP_ATOMIC);
+ struct vhost_umem_node *tmp, *node;
+ if (!size)
+ return -EFAULT;
+
+ node = kmalloc(sizeof(*node), GFP_ATOMIC);
if (!node)
return -ENOMEM;
--
2.19.1
2019 Oct 03
1
[PATCH 07/11] vhost: convert vhost_umem_interval_tree to half closed intervals
...x/sort.h>
#include <linux/sched/mm.h>
#include <linux/sched/signal.h>
-#include <linux/interval_tree_generic.h>
+#include <linux/interval_tree_gen.h>
#include <linux/nospec.h>
#include "vhost.h"
@@ -51,7 +51,7 @@ enum {
INTERVAL_TREE_DEFINE(struct vhost_umem_node,
rb, __u64, __subtree_last,
- START, LAST, static inline, vhost_umem_interval_tree);
+ START, END, static inline, vhost_umem_interval_tree);
#ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
static void vhost_disable_cross_endian(struct vhost_virtqueue *vq)
@@ -1034,7 +1034,7 @@ stati...
2016 Mar 25
4
[RFC PATCH V2 0/2] basic device IOTLB support
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace(qemu) implementation of
iommu for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- Fill the translation request in a preset userspace address (This
2016 Mar 25
4
[RFC PATCH V2 0/2] basic device IOTLB support
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace(qemu) implementation of
iommu for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- Fill the translation request in a preset userspace address (This
2016 Jan 18
2
[PATCH RFC] vhost: convert pre sorted vhost memory array to interval tree
...erval_tree_generic.h>
#include "vhost.h"
@@ -42,6 +43,10 @@ enum {
#define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
#define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
+INTERVAL_TREE_DEFINE(struct vhost_umem_node,
+ rb, __u64, __subtree_last,
+ START, LAST, , vhost_umem_interval_tree);
+
#ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
static void vhost_vq_reset_user_be(struct vhost_virtqueue *vq)
{
@@ -275,7 +280,7 @@ static void vhost_vq_reset(struct vhost_dev *dev,
vq->call_ctx = NULL;
vq-&g...
2016 Jan 18
2
[PATCH RFC] vhost: convert pre sorted vhost memory array to interval tree
...erval_tree_generic.h>
#include "vhost.h"
@@ -42,6 +43,10 @@ enum {
#define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
#define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
+INTERVAL_TREE_DEFINE(struct vhost_umem_node,
+ rb, __u64, __subtree_last,
+ START, LAST, , vhost_umem_interval_tree);
+
#ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
static void vhost_vq_reset_user_be(struct vhost_virtqueue *vq)
{
@@ -275,7 +280,7 @@ static void vhost_vq_reset(struct vhost_dev *dev,
vq->call_ctx = NULL;
vq-&g...
2016 Mar 25
0
[RFC PATCH V2 1/2] vhost: convert pre sorted vhost memory array to interval tree
...erval_tree_generic.h>
#include "vhost.h"
@@ -42,6 +43,10 @@ enum {
#define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
#define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
+INTERVAL_TREE_DEFINE(struct vhost_umem_node,
+ rb, __u64, __subtree_last,
+ START, LAST, , vhost_umem_interval_tree);
+
#ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
static void vhost_vq_reset_user_be(struct vhost_virtqueue *vq)
{
@@ -275,7 +280,7 @@ static void vhost_vq_reset(struct vhost_dev *dev,
vq->call_ctx = NULL;
vq-&g...
2016 Jan 19
0
[PATCH RFC] vhost: convert pre sorted vhost memory array to interval tree
...nclude "vhost.h"
>
> @@ -42,6 +43,10 @@ enum {
> #define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
> #define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
>
> +INTERVAL_TREE_DEFINE(struct vhost_umem_node,
> + rb, __u64, __subtree_last,
> + START, LAST, , vhost_umem_interval_tree);
> +
> #ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
> static void vhost_vq_reset_user_be(struct vhost_virtqueue *vq)
> {
> @@ -275,7 +280,7 @@ static void vhost_vq_reset(struct vhost_dev *dev...
2016 Mar 25
0
[RFC PATCH V2 2/2] vhost: device IOTLB API
...t;work_lock);
+ spin_lock_init(&dev->iotlb_lock);
INIT_LIST_HEAD(&dev->work_list);
dev->worker = NULL;
@@ -537,6 +543,15 @@ void vhost_dev_stop(struct vhost_dev *dev)
}
EXPORT_SYMBOL_GPL(vhost_dev_stop);
+static void vhost_umem_free(struct vhost_umem *umem,
+ struct vhost_umem_node *node)
+{
+ vhost_umem_interval_tree_remove(node, &umem->umem_tree);
+ list_del(&node->link);
+ kfree(node);
+ umem->numem--;
+}
+
static void vhost_umem_clean(struct vhost_umem *umem)
{
struct vhost_umem_node *node, *tmp;
@@ -544,11 +559,9 @@ static void vhost_umem_clean(struc...
2016 Apr 27
1
[RFC PATCH V2 1/2] vhost: convert pre sorted vhost memory array to interval tree
...nclude "vhost.h"
>
> @@ -42,6 +43,10 @@ enum {
> #define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
> #define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
>
> +INTERVAL_TREE_DEFINE(struct vhost_umem_node,
> + rb, __u64, __subtree_last,
> + START, LAST, , vhost_umem_interval_tree);
> +
> #ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
> static void vhost_vq_reset_user_be(struct vhost_virtqueue *vq)
> {
> @@ -275,7 +280,7 @@ static void vhost_vq_reset(struct vhost_dev *dev...
2016 Apr 27
1
[RFC PATCH V2 1/2] vhost: convert pre sorted vhost memory array to interval tree
...nclude "vhost.h"
>
> @@ -42,6 +43,10 @@ enum {
> #define vhost_used_event(vq) ((__virtio16 __user *)&vq->avail->ring[vq->num])
> #define vhost_avail_event(vq) ((__virtio16 __user *)&vq->used->ring[vq->num])
>
> +INTERVAL_TREE_DEFINE(struct vhost_umem_node,
> + rb, __u64, __subtree_last,
> + START, LAST, , vhost_umem_interval_tree);
> +
> #ifdef CONFIG_VHOST_CROSS_ENDIAN_LEGACY
> static void vhost_vq_reset_user_be(struct vhost_virtqueue *vq)
> {
> @@ -275,7 +280,7 @@ static void vhost_vq_reset(struct vhost_dev *dev...
2016 Jun 23
3
[PATCH V2 0/3] basic device IOTLB support for vhost_net
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace IOMMU implementation (qemu)
for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- when there's a IOTLB miss, it will notify userspace through
2016 Jun 23
3
[PATCH V2 0/3] basic device IOTLB support for vhost_net
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace IOMMU implementation (qemu)
for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- when there's a IOTLB miss, it will notify userspace through
2016 Dec 14
2
[PATCH] vhost: introduce O(1) vq metadata cache
...host_worker(void *data)
@@ -690,6 +707,18 @@ static int vq_memory_access_ok(void __user *log_base, struct vhost_umem *umem,
return 1;
}
+static inline void __user *vhost_vq_meta_fetch(struct vhost_virtqueue *vq,
+ u64 addr, unsigned int size,
+ int type)
+{
+ const struct vhost_umem_node *node = vq->meta_iotlb[type];
+
+ if (!node)
+ return NULL;
+
+ return (void *)(node->userspace_addr + (u64)addr - node->start);
+}
+
/* Can we switch to this memory table? */
/* Caller should have device mutex but not vq mutex */
static int memory_access_ok(struct vhost_dev *d, struct...
2016 Dec 14
2
[PATCH] vhost: introduce O(1) vq metadata cache
...host_worker(void *data)
@@ -690,6 +707,18 @@ static int vq_memory_access_ok(void __user *log_base, struct vhost_umem *umem,
return 1;
}
+static inline void __user *vhost_vq_meta_fetch(struct vhost_virtqueue *vq,
+ u64 addr, unsigned int size,
+ int type)
+{
+ const struct vhost_umem_node *node = vq->meta_iotlb[type];
+
+ if (!node)
+ return NULL;
+
+ return (void *)(node->userspace_addr + (u64)addr - node->start);
+}
+
/* Can we switch to this memory table? */
/* Caller should have device mutex but not vq mutex */
static int memory_access_ok(struct vhost_dev *d, struct...
2016 Jun 22
0
[PATCH 3/3] vhost: device IOTLB API
...ending_list);
+ spin_lock_init(&dev->iotlb_lock);
dev->worker = NULL;
for (i = 0; i < dev->nvqs; ++i) {
@@ -563,6 +573,15 @@ void vhost_dev_stop(struct vhost_dev *dev)
}
EXPORT_SYMBOL_GPL(vhost_dev_stop);
+static void vhost_umem_free(struct vhost_umem *umem,
+ struct vhost_umem_node *node)
+{
+ vhost_umem_interval_tree_remove(node, &umem->umem_tree);
+ list_del(&node->link);
+ kfree(node);
+ umem->numem--;
+}
+
static void vhost_umem_clean(struct vhost_umem *umem)
{
struct vhost_umem_node *node, *tmp;
@@ -570,14 +589,31 @@ static void vhost_umem_clean(stru...
2016 May 24
6
[RFC PATCH V3 0/3] basic device IOTLB support
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace IOMMU implementation (qemu)
for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- when there's a IOTLB miss, it will notify userspace through
2016 May 24
6
[RFC PATCH V3 0/3] basic device IOTLB support
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace IOMMU implementation (qemu)
for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- when there's a IOTLB miss, it will notify userspace through
2016 Jun 22
4
[PATCH 0/3] basic device IOTLB support
This patch tries to implement an device IOTLB for vhost. This could be
used with for co-operation with userspace IOMMU implementation (qemu)
for a secure DMA environment (DMAR) in guest.
The idea is simple. When vhost meets an IOTLB miss, it will request
the assistance of userspace to do the translation, this is done
through:
- when there's a IOTLB miss, it will notify userspace through