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Hi Zhu, url: https://github.com/0day-ci/linux/commits/Zhu-Lingshan/vdpa-bypass-waking-up-vhost_woker-for-vdpa-vq-kick/20200526-133819 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: x86_64-randconfig-m001-20200529 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by:

Hi Zhu, url: https://github.com/0day-ci/linux/commits/Zhu-Lingshan/vdpa-bypass-waking-up-vhost_woker-for-vdpa-vq-kick/20200526-133819 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: x86_64-randconfig-m001-20200529 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by:

On 2020/5/26 ??1:32, Zhu Lingshan wrote: > Standard vhost devices rely on waking up a vhost_worker to kick > a virtquque. However vdpa devices have hardware backends, so it > does not need this waking up routin. In this commit, vdpa device > will kick a virtqueue directly, reduce the performance overhead > caused by waking up a vhost_woker. Thanks for the patch. It would be

Each of these drivers has a copy of the same trivial helper function to convert the pointer argument and then call the native ioctl handler. We now have a generic implementation of that, so use it. Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com> Reviewed-by: Jason Gunthorpe <jgg at mellanox.com>

Each of these drivers has a copy of the same trivial helper function to convert the pointer argument and then call the native ioctl handler. We now have a generic implementation of that, so use it. Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com> Reviewed-by: Jason Gunthorpe <jgg at mellanox.com>

On Thu, Sep 24, 2020 at 11:21:03AM +0800, Jason Wang wrote: > We need to free vqs during the err path after it has been allocated > since vhost won't do that for us. > > Signed-off-by: Jason Wang <jasowang at redhat.com> This is a bugfix too right? I don't see it posted separately ... > --- > drivers/vhost/vdpa.c | 11 ++++++++--- > 1 file changed, 8

On Tue, Apr 16, 2019 at 10:19:47PM +0200, Arnd Bergmann wrote: > Each of these drivers has a copy of the same trivial helper function to > convert the pointer argument and then call the native ioctl handler. > > We now have a generic implementation of that, so use it. > > Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> > Reviewed-by: Jarkko Sakkinen

Each of these drivers has a copy of the same trivial helper function to convert the pointer argument and then call the native ioctl handler. We now have a generic implementation of that, so use it. Signed-off-by: Arnd Bergmann <arnd at arndb.de> --- drivers/char/ppdev.c | 12 +--------- drivers/char/tpm/tpm_vtpm_proxy.c | 12 +--------- drivers/firewire/core-cdev.c | 12

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 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

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 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

On 2020/6/2 ??5:42, Dan Carpenter wrote: > Hi Zhu, > > url: https://github.com/0day-ci/linux/commits/Zhu-Lingshan/vdpa-bypass-waking-up-vhost_woker-for-vdpa-vq-kick/20200526-133819 > base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next > config: x86_64-randconfig-m001-20200529 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 > >

Each of these drivers has a copy of the same trivial helper function to convert the pointer argument and then call the native ioctl handler. We now have a generic implementation of that, so use it. Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> Acked-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com>

On Thu, Dec 31, 2015 at 03:13:45PM +0800, Jason Wang wrote: > 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 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

On Wed, Feb 15, 2023 at 01:15:55PM +0800, Longpeng (Mike, Cloud Infrastructure Service Product Dept.) wrote: > > > ? 2023/2/15 10:56, Jason Wang ??: > > On Wed, Feb 15, 2023 at 10:49 AM Longpeng (Mike, Cloud Infrastructure > > Service Product Dept.) <longpeng2 at huawei.com> wrote: > > > > > > > > > > > > ? 2023/2/15 10:00, Jason

When the user call VHOST_SET_OWNER ioctl and the vDPA device has `use_va` set to true, let's call the bind_mm callback. In this way we can bind the device to the user address space and directly use the user VA. The unbind_mm callback is called during the release after stopping the device. Signed-off-by: Stefano Garzarella <sgarzare at redhat.com> --- Notes: v3: - added `case

On 2020/7/31 ??2:55, Zhu Lingshan wrote: > This patch introduce a set of functions for setup/unsetup > and update irq offloading respectively by register/unregister > and re-register the irq_bypass_producer. > > With these functions, this commit can setup/unsetup > irq offloading through setting DRIVER_OK/!DRIVER_OK, and > update irq offloading through SET_VRING_CALL. >

On Tue, Feb 04, 2020 at 11:30:11AM +0800, Jason Wang wrote: > On 2020/1/31 ??11:36, Tiwei Bie wrote: > > This patch introduces a vDPA based vhost backend. This > > backend is built on top of the same interface defined > > in virtio-vDPA and provides a generic vhost interface > > for userspace to accelerate the virtio devices in guest. > > > > This backend is

Commit 653055b9acd4 ("vhost-vdpa: support get/set backend features") introduces two malfunction backend features ioctls: 1) the ioctls was blindly added to vring ioctl instead of vdpa device ioctl 2) vhost_set_backend_features() was called when dev mutex has already been held which will lead a deadlock This patch fixes the above issues. Cc: Eli Cohen <elic at nvidia.com>

Commit 653055b9acd4 ("vhost-vdpa: support get/set backend features") introduces two malfunction backend features ioctls: 1) the ioctls was blindly added to vring ioctl instead of vdpa device ioctl 2) vhost_set_backend_features() was called when dev mutex has already been held which will lead a deadlock This patch fixes the above issues. Cc: Eli Cohen <elic at nvidia.com>

We need to free vqs during the err path after it has been allocated since vhost won't do that for us. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vdpa.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 796fe979f997..9c641274b9f3 100644 --- a/drivers/vhost/vdpa.c +++