similar to: [PATCH v8 29/50] vhost: make features 64 bit

On Sun, 2014-11-30 at 18:44 +0300, Sergei Shtylyov wrote: > Hello. > > On 11/30/2014 6:11 PM, Michael S. Tsirkin wrote: > > > We need to use bit 32 for virtio 1.0 > > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > > Reviewed-by: Jason Wang <jasowang at redhat.com> > > --- > > drivers/vhost/vhost.h | 4 ++-- > > 1 file

On Sun, 2014-11-30 at 18:44 +0300, Sergei Shtylyov wrote: > Hello. > > On 11/30/2014 6:11 PM, Michael S. Tsirkin wrote: > > > We need to use bit 32 for virtio 1.0 > > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > > Reviewed-by: Jason Wang <jasowang at redhat.com> > > --- > > drivers/vhost/vhost.h | 4 ++-- > > 1 file

We need to use bit 32 for virtio 1.0 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 3eda654..c624b09 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7

We need to use bit 32 for virtio 1.0 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 3eda654..c624b09 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7

Hello. On 11/30/2014 6:11 PM, Michael S. Tsirkin wrote: > We need to use bit 32 for virtio 1.0 > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > Reviewed-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h >

Hello. On 11/30/2014 6:11 PM, Michael S. Tsirkin wrote: > We need to use bit 32 for virtio 1.0 > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > Reviewed-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h >

Refactor code to make sure features are only accessed under VQ mutex. This makes everything simpler, no need for RCU here anymore. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Note: this is on top of my last pull request drivers/vhost/vhost.h | 11 +++-------- drivers/vhost/net.c | 8 +++----- drivers/vhost/scsi.c | 22 +++++++++++++--------- drivers/vhost/test.c | 9

Refactor code to make sure features are only accessed under VQ mutex. This makes everything simpler, no need for RCU here anymore. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Note: this is on top of my last pull request drivers/vhost/vhost.h | 11 +++-------- drivers/vhost/net.c | 8 +++----- drivers/vhost/scsi.c | 22 +++++++++++++--------- drivers/vhost/test.c | 9

Refactor code to make sure features are only accessed under VQ mutex. This makes everything simpler, no need for RCU here anymore. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- This is on top of the recent pull request that I sent. drivers/vhost/vhost.h | 11 +++-------- drivers/vhost/net.c | 8 +++----- drivers/vhost/scsi.c | 22 +++++++++++++---------

Refactor code to make sure features are only accessed under VQ mutex. This makes everything simpler, no need for RCU here anymore. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- This is on top of the recent pull request that I sent. drivers/vhost/vhost.h | 11 +++-------- drivers/vhost/net.c | 8 +++----- drivers/vhost/scsi.c | 22 +++++++++++++---------

We need to use bit 32 for virtio 1.0 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 3eda654..c624b09 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7 @@ struct vhost_virtqueue { /* Protected by

We need to use bit 32 for virtio 1.0 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 3eda654..c624b09 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7 @@ struct vhost_virtqueue { /* Protected by

We need to use bit 32 for virtio 1.0 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 3eda654..c624b09 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7 @@ struct vhost_virtqueue { /* Protected by

We need to use bit 32 for virtio 1.0 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 3eda654..c624b09 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -106,7 +106,7 @@ struct vhost_virtqueue { /* Protected by

On biarch kernels, it is not safe to do copy from/to user, even with use_mm, unless we checked the address range with access_ok previously. Implement these checks to enforce safe memory accesses. Reported-by: Al Viro <viro at zeniv.linux.org.uk> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/net.c | 17 ++++++- drivers/vhost/vhost.c | 111

On biarch kernels, it is not safe to do copy from/to user, even with use_mm, unless we checked the address range with access_ok previously. Implement these checks to enforce safe memory accesses. Reported-by: Al Viro <viro at zeniv.linux.org.uk> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/net.c | 17 ++++++- drivers/vhost/vhost.c | 111

Add guest memory access wrappers to handle virtio endianness conversions. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Jason Wang <jasowang at redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- drivers/vhost/vhost.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/vhost/vhost.h

Add guest memory access wrappers to handle virtio endianness conversions. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Jason Wang <jasowang at redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- drivers/vhost/vhost.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/vhost/vhost.h

Current pre-sorted memory region array has some limitations for future device IOTLB conversion: 1) need extra work for adding and removing a single region, and it's expected to be slow because of sorting or memory re-allocation. 2) need extra work of removing a large range which may intersect several regions with different size. 3) need trick for a replacement policy like LRU To

On Mon, 18 Jan 2016 10:42:29 +0800 Jason Wang <jasowang at redhat.com> wrote: > Current pre-sorted memory region array has some limitations for future > device IOTLB conversion: > > 1) need extra work for adding and removing a single region, and it's > expected to be slow because of sorting or memory re-allocation. > 2) need extra work of removing a large range