Displaying 20 results from an estimated 23 matches for "5dc174ac8cac".
2019 Sep 08
2
[RFC PATCH untested] vhost: block speculation of translated descriptors
...he defence in depth principle, make sure
the address is not validated out of node range.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..0ee375fb7145 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
_iov->iov_base = (void __...
2019 Sep 08
2
[RFC PATCH untested] vhost: block speculation of translated descriptors
...he defence in depth principle, make sure
the address is not validated out of node range.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..0ee375fb7145 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
_iov->iov_base = (void __...
2019 Sep 11
4
[PATCH v2] vhost: block speculation of translated descriptors
...t;
Acked-by: Jason Wang <jasowang at redhat.com>
Tested-by: Jason Wang <jasowang at redhat.com>
---
changes from v1: fix build on 32 bit
drivers/vhost/vhost.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..34ea219936e3 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2071,8 +2071,10 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
_iov = iov + ret;
size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
- _iov-&...
2019 Sep 11
4
[PATCH v2] vhost: block speculation of translated descriptors
...t;
Acked-by: Jason Wang <jasowang at redhat.com>
Tested-by: Jason Wang <jasowang at redhat.com>
---
changes from v1: fix build on 32 bit
drivers/vhost/vhost.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..34ea219936e3 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2071,8 +2071,10 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
_iov = iov + ret;
size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
- _iov-&...
2019 Sep 09
2
[RFC PATCH untested] vhost: block speculation of translated descriptors
...range.
> >
> > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> > ---
> > drivers/vhost/vhost.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> > index 5dc174ac8cac..0ee375fb7145 100644
> > --- a/drivers/vhost/vhost.c
> > +++ b/drivers/vhost/vhost.c
> > @@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> > size = node->size - addr + node->start;
> > _iov->iov_len = min(...
2019 Sep 09
2
[RFC PATCH untested] vhost: block speculation of translated descriptors
...range.
> >
> > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> > ---
> > drivers/vhost/vhost.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> > index 5dc174ac8cac..0ee375fb7145 100644
> > --- a/drivers/vhost/vhost.c
> > +++ b/drivers/vhost/vhost.c
> > @@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> > size = node->size - addr + node->start;
> > _iov->iov_len = min(...
2019 Sep 10
1
[RFC PATCH untested] vhost: block speculation of translated descriptors
...<mst at redhat.com>
> > > > ---
> > > > drivers/vhost/vhost.c | 4 +++-
> > > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> > > > index 5dc174ac8cac..0ee375fb7145 100644
> > > > --- a/drivers/vhost/vhost.c
> > > > +++ b/drivers/vhost/vhost.c
> > > > @@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> > > > size = node->size - addr + node->sta...
2019 Sep 09
0
[RFC PATCH untested] vhost: block speculation of translated descriptors
...the address is not validated out of node range.
>
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> ---
> drivers/vhost/vhost.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 5dc174ac8cac..0ee375fb7145 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> size = node->size - addr + node->start;
> _iov->iov_len = min((u64)len - s, size);
>...
2019 Sep 10
0
[RFC PATCH untested] vhost: block speculation of translated descriptors
...>> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
>>> ---
>>> drivers/vhost/vhost.c | 4 +++-
>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
>>> index 5dc174ac8cac..0ee375fb7145 100644
>>> --- a/drivers/vhost/vhost.c
>>> +++ b/drivers/vhost/vhost.c
>>> @@ -2072,7 +2072,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
>>> size = node->size - addr + node->start;
>>> _iov-&...
2019 Sep 11
0
[PATCH v2] vhost: block speculation of translated descriptors
...ear. The risk
should be low and better to be covered in case.
> ---
>
> changes from v1: fix build on 32 bit
>
> drivers/vhost/vhost.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 5dc174ac8cac..34ea219936e3 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -2071,8 +2071,10 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> _iov = iov + ret;
> size = node->size - addr + node->start;
> _iov->iov_len = min(...
2019 Sep 11
0
[PATCH v2] vhost: block speculation of translated descriptors
...d like me to merge this directly,
Cc stable, or handle it in some other way.
> changes from v1: fix build on 32 bit
>
> drivers/vhost/vhost.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 5dc174ac8cac..34ea219936e3 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -2071,8 +2071,10 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> _iov = iov + ret;
> size = node->size - addr + node->start;
> _iov->iov_len = min(...
2019 Sep 11
2
[PATCH v2] vhost: block speculation of translated descriptors
...ere in practice?
> > ---
> >
> > changes from v1: fix build on 32 bit
> >
> > drivers/vhost/vhost.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> > index 5dc174ac8cac..34ea219936e3 100644
> > --- a/drivers/vhost/vhost.c
> > +++ b/drivers/vhost/vhost.c
> > @@ -2071,8 +2071,10 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> > _iov = iov + ret;
> > size = node->size - addr + node->start;
> &...
2019 Sep 11
2
[PATCH v2] vhost: block speculation of translated descriptors
...ere in practice?
> > ---
> >
> > changes from v1: fix build on 32 bit
> >
> > drivers/vhost/vhost.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> > index 5dc174ac8cac..34ea219936e3 100644
> > --- a/drivers/vhost/vhost.c
> > +++ b/drivers/vhost/vhost.c
> > @@ -2071,8 +2071,10 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> > _iov = iov + ret;
> > size = node->size - addr + node->start;
> &...
2019 Sep 08
3
[PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address
...t leak userspace info outside the allowed memory table to
guests.
Following the defence in depth principle, make sure
the address is not validated out of node range.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..863e25011ef6 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2072,7 +2076,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
_iov->iov_base = (void __...
2019 Sep 08
3
[PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address
...t leak userspace info outside the allowed memory table to
guests.
Following the defence in depth principle, make sure
the address is not validated out of node range.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..863e25011ef6 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2072,7 +2076,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
size = node->size - addr + node->start;
_iov->iov_len = min((u64)len - s, size);
_iov->iov_base = (void __...
2019 Sep 17
0
[RFC v4 3/3] vhost: introduce mdev based hardware backend
...it(void)
+{
+ misc_deregister(&vhost_mdev_misc);
+}
+module_exit(vhost_mdev_exit);
+
+MODULE_VERSION("0.0.0");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Hardware vhost accelerator abstraction");
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5dc174ac8cac..0f7236a17a56 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -426,8 +426,7 @@ bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
}
EXPORT_SYMBOL_GPL(vhost_exceeds_weight);
-static size_t vhost_get_avail_size(struct vhost_virtqueue *vq,
- unsigned int num)
+size_t vho...
2019 Sep 17
1
[RFC v4 3/3] vhost: introduce mdev based hardware backend
..._mdev_misc);
> +}
> +module_exit(vhost_mdev_exit);
> +
> +MODULE_VERSION("0.0.0");
> +MODULE_LICENSE("GPL v2");
> +MODULE_DESCRIPTION("Hardware vhost accelerator abstraction");
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 5dc174ac8cac..0f7236a17a56 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -426,8 +426,7 @@ bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
> }
> EXPORT_SYMBOL_GPL(vhost_exceeds_weight);
>
> -static size_t vhost_get_avail_size(struct vhost_virtqueue *vq,...
2019 Sep 09
0
[PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address
...to
> guests.
>
> Following the defence in depth principle, make sure
> the address is not validated out of node range.
>
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
>
> ---
>
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 5dc174ac8cac..863e25011ef6 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -2072,7 +2076,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> size = node->size - addr + node->start;
> _iov->iov_len = min((u64)len - s, size);
>...
2019 Sep 09
1
[PATCH 2/2] vhost: re-introducing metadata acceleration through kernel virtual address
...n depth principle, make sure
> > the address is not validated out of node range.
> >
> > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> >
> > ---
> >
> >
> > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> > index 5dc174ac8cac..863e25011ef6 100644
> > --- a/drivers/vhost/vhost.c
> > +++ b/drivers/vhost/vhost.c
> > @@ -2072,7 +2076,9 @@ static int translate_desc(struct vhost_virtqueue *vq, u64 addr, u32 len,
> > size = node->size - addr + node->start;
> > _iov->iov_len = min(...
2019 Sep 17
7
[RFC v4 0/3] vhost: introduce mdev based hardware backend
This RFC is to demonstrate below ideas,
a) Build vhost-mdev on top of the same abstraction defined in
the virtio-mdev series [1];
b) Introduce /dev/vhost-mdev to do vhost ioctls and support
setting mdev device as backend;
Now the userspace API looks like this:
- Userspace generates a compatible mdev device;
- Userspace opens this mdev device with VFIO API (including
doing IOMMU