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author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2018-02-06 11:08:24 -0700 |
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committer | Alex Williamson <alex.williamson@redhat.com> | 2018-02-06 11:08:24 -0700 |
commit | 9ded780c4cc92d15a977dba589d64862e25a340e (patch) | |
tree | 64a081469be91b7bacadf05e97d6766885e7a44e /block.c | |
parent | 07bc681a331311e9c51d1cd8933739a80cd57af8 (diff) | |
download | qemu-9ded780c4cc92d15a977dba589d64862e25a340e.zip qemu-9ded780c4cc92d15a977dba589d64862e25a340e.tar.gz qemu-9ded780c4cc92d15a977dba589d64862e25a340e.tar.bz2 |
spapr/iommu: Enable in-kernel TCE acceleration via VFIO KVM device
In order to enable TCE operations support in KVM, we have to inform
the KVM about VFIO groups being attached to specific LIOBNs;
the necessary bits are implemented already by IOMMU MR and VFIO.
This defines get_attr() for the SPAPR TCE IOMMU MR which makes VFIO
call the KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE ioctl and establish
LIOBN-to-IOMMU link.
This changes spapr_tce_set_need_vfio() to avoid TCE table reallocation
if the kernel supports the TCE acceleration.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
[aw - remove unnecessary sys/ioctl.h include]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'block.c')
0 files changed, 0 insertions, 0 deletions