This patchset bases on David Gibson's git tree: git://github.com/dgibson/qemu.git (branch: vfio). And it requires host kernel changes which is being reviewed this moment.
https://patchwork.ozlabs.org/patch/519135/ https://patchwork.ozlabs.org/patch/519136/ Currently, EEH works with the assumption that every sPAPRPHBState, which is associated with VFIO container in VFIO case, only has one attached IOMMU group (PE). The request EEH opertion (like reset) is applied to all PEs attached to the specified sPAPRPHBState. It breaks the affected boundary of the EEH operation if the sPAPRPHBState supports multiple IOMMU groups (PEs). The patchset intends to resolve above issue by using the newly exposed EEH v2 API interface, which accepts IOMMU group (PE) to specify the affected domain of the requested EEH operation: Every PE is identified with PE address, which is the (PE's primary bus ID + 1) previously. After this patchset, it's changed to (IOMMU group ID + 1). The PE adress is passed on every requested EEH operation from guest so that it can be passed to host to affect the target PE only. Gavin Shan (4): linux-headers: Sync vfio.h VFIO: Introduce vfio_get_group_id() sPAPR: Support multiple IOMMU groups in PHB for EEH operations sPAPR: Remove EEH callbacks in sPAPRPHBClass hw/ppc/spapr_pci.c | 68 ++++++++++++------------------------- hw/ppc/spapr_pci_vfio.c | 83 +++++++++++++++++++++++++++++++++------------ hw/vfio/pci.c | 12 +++++++ include/hw/pci-host/spapr.h | 11 +++--- include/hw/vfio/vfio.h | 1 + linux-headers/linux/vfio.h | 6 ++++ 6 files changed, 110 insertions(+), 71 deletions(-) -- 2.1.0
