Re: [RFC v4 0/3] vhost: introduce mdev based hardware backend

On 2019/9/17 上午9:02, Tiwei Bie wrote: 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 loo

Re: [RFC v4 0/3] vhost: introduce mdev based hardware backend

On 2019/9/17 上午9:02, Tiwei Bie wrote: 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 loo

[RFC v4 3/3] vhost: introduce mdev based hardware backend

More details about this patch can be found from the cover letter for now. Only compile test has been done for now. Signed-off-by: Tiwei Bie --- drivers/vhost/Kconfig| 9 + drivers/vhost/Makefile | 3 + drivers/vhost/mdev.c | 462 +

[RFC v4 1/3] vfio: support getting vfio device from device fd

This patch introduces the support for getting VFIO device from VFIO device fd. With this support, it's possible for vhost to get VFIO device from the group fd and device fd set by the userspace. Signed-off-by: Tiwei Bie --- drivers/vfio/vfio.c | 25 + include/linux/vfio.

[RFC v4 2/3] vfio: support checking vfio driver by device ops

This patch introduces the support for checking the VFIO driver by device ops. And vfio-mdev's device ops is also exported to make it possible to check whether a VFIO device is based on a mdev device. Signed-off-by: Tiwei Bie --- drivers/vfio/mdev/vfio_mdev.c | 3 ++- drivers/vfio/vfio.c

[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 comp

Re: [PATCH 3/8] drm/shmem: drop DEFINE_DRM_GEM_SHMEM_FOPS

On Fri, Sep 13, 2019 at 7:29 AM Gerd Hoffmann wrote: > Version? Pretty sure this is not v1. > DEFINE_DRM_GEM_SHMEM_FOPS is identical > to DEFINE_DRM_GEM_FOPS now, drop it. > > Signed-off-by: Gerd Hoffmann > --- > include/drm/drm_gem_shmem_helper.h | 26 - > drivers

Re: [PATCH 0/5] iommu: Implement iommu_put_resv_regions_simple()

Hi Thierry, On 8/29/19 1:17 PM, Thierry Reding wrote: > From: Thierry Reding > > Most IOMMU drivers only need to free the memory allocated for each > reserved region. Instead of open-coding the loop to do this in each > driver, extract the code into a common function that can be used by > all th

Re: VIRTIO_BALLOON_F_FREE_PAGE_HINT

On 16.09.19 03:41, Wei Wang wrote: > On 09/14/2019 02:36 AM, Tyler Sanderson wrote: >> Hello, I'm curious about the intent of VIRTIO_BALLOON_F_FREE_PAGE_HINT >> (commit >> ). >