| Message ID | 20221129093535.359357-1-yi.l.liu@intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Make mdev driver dma_unmap callback tolerant to unmaps come before device open | expand |
On 2022/11/29 17:35, Yi Liu wrote: > Jason's "Connect VFIO to IOMMUFD" introduces vfio iommufd compat mode. Under > this mode, vfio_iommufd_bind() creates an access which has an unmap callback, > which can be called immediately. This means mdev drivers may receive unmap > requests before the mdev is opened. For now, there are only three drivers > (gvt, vfio-ap and vfio-ccw) providing dma_unmap(). vfio-ccw is fine with > such requests. While gvt-g and vfio-ap may have potential problem with such > requests due to internal implementation. This series tries to enhance the two > drivers. > > This series is based on Jason's below branch. > > https://github.com/jgunthorpe/linux/tree/iommufd > > (commit: 41973418f6c8c241ed5647d1408d5b917f24dfd8) it's resent as below link. Please ignore this series. https://lore.kernel.org/kvm/20221129105831.466954-1-yi.l.liu@intel.com/ > Change: > v2: > - Refine the cover letter and commit message of patch 0001 (Kevin) > - Rename patch 0001 to better fit the commit message > - Add r-b from Zhi for patch 0001 > - tweak iova range test to assume page-aligned for patch 0002 (Jason) > - Remove break so all queues within range are removed for patch 0002 (Kevin) > > v1: https://lore.kernel.org/kvm/20221123134832.429589-1-yi.l.liu@intel.com/ > > Cc: Tony Krowiak <akrowiak@linux.ibm.com> > Cc: Halil Pasic <pasic@linux.ibm.com> > Cc: Jason Herne <jjherne@linux.ibm.com> > Cc: linux-s390@vger.kernel.org > Cc: Zhenyu Wang <zhenyuw@linux.intel.com> > Cc: Zhi Wang <zhi.a.wang@intel.com> > Cc: Kevin Tian <kevin.tian@intel.com> > Cc: intel-gvt-dev@lists.freedesktop.org > > Regards, > Yi Liu > > Matthew Rosato (1): > vfio/ap: validate iova during dma_unmap and trigger irq disable > > Yi Liu (1): > i915/gvt: Move gvt mapping cache initialization to vGPU creation > > drivers/gpu/drm/i915/gvt/gvt.h | 2 ++ > drivers/gpu/drm/i915/gvt/kvmgt.c | 7 ++----- > drivers/gpu/drm/i915/gvt/vgpu.c | 2 ++ > drivers/s390/crypto/vfio_ap_ops.c | 18 +++++++++++++++++- > 4 files changed, 23 insertions(+), 6 deletions(-) >