The series of patches adds support EEH for VFIO PCI devices on sPAPR platform. It requires corresponding host kernel support. It has been rebased to Alex Graf's QEMU repository:
QEMU: git://github.com/agraf/qemu.git (branch: ppc-next) Kernel: http://patchwork.ozlabs.org/patch/357665/ http://patchwork.ozlabs.org/patch/357667/ http://patchwork.ozlabs.org/patch/357666/ The implementations notes are below. Please comment. * RTAS calls are received in spapr_pci.c, sanity check is done there. RTAS handlers handle what they can. If there is something it cannot handle and sPAPRPHBClass::eeh_handler callback is defined, it is called. * sPAPRPHBClass::eeh_handler is only implemented for VFIO now. It does ioctl() to the IOMMU container fd to complete the call. Error codes from that ioctl() are transferred back to the guest. Changelog ========= v8 -> v9: * Update kernel header (vfio.h) according to changes applied to kerenl. * Rename rtas_finish_eeh_request() to rtas_handle_eeh_request(). * vfio_pci_container_ioctl() moved to Alexey's VFIO patchset. v9 -> v10: * Make sure we have zero struct vfio_eeh_pe_op::flags v10 -> v11: * Don't explicitly set struct vfio_eeh_pe_op::flags to 0. * rtas_handle_eeh_request() checks the validity of sPAPRPHBState and sPAPRPHBClass::eeh_handler. * The first level functions set the RTAS call return value. * Replace "if (...)" with "switch (...)". v11 -> v12: * RTAS call returns RTAS_OUT_NO_ERRORS_FOUND on success because we don't support it yet. * Add one more patch from Alexey to make find_phb() and find_dev() phblic. * Rebase to Alex Graf's QEMU repository. Alexey Kardashevskiy (1): spapr_pci: Make find_phb()/find_dev() public Gavin Shan (3): sPAPR: Implement EEH RTAS calls headers: Update kernel header sPAPR: Implement sPAPRPHBClass::eeh_handler hw/misc/vfio.c | 1 + hw/ppc/spapr_pci.c | 268 ++++++++++++++++++++++++++++++++++++++++++-- hw/ppc/spapr_pci_vfio.c | 56 +++++++++ include/hw/pci-host/spapr.h | 11 ++ include/hw/ppc/spapr.h | 43 ++++++- linux-headers/linux/vfio.h | 34 ++++++ 6 files changed, 400 insertions(+), 13 deletions(-) -- 1.8.3.2
