diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2016-07-04 13:33:06 +1000 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-07-05 14:31:08 +1000 |
| commit | 2e4109de8e589beecd69996ee14f24021b991c0d (patch) | |
| tree | 6ae3ddcd94419eada161c30501ec0df834790486 /include/hw/vfio | |
| parent | f4ec5e26edbd4c7509623ec882c344dc334bc1b2 (diff) | |
vfio/spapr: Create DMA window dynamically (SPAPR IOMMU v2)
New VFIO_SPAPR_TCE_v2_IOMMU type supports dynamic DMA window management.
This adds ability to VFIO common code to dynamically allocate/remove
DMA windows in the host kernel when new VFIO container is added/removed.
This adds a helper to vfio_listener_region_add which makes
VFIO_IOMMU_SPAPR_TCE_CREATE ioctl and adds just created IOMMU into
the host IOMMU list; the opposite action is taken in
vfio_listener_region_del.
When creating a new window, this uses heuristic to decide on the TCE table
levels number.
This should cause no guest visible change in behavior.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[dwg: Added some casts to prevent printf() warnings on certain targets
where the kernel headers' __u64 doesn't match uint64_t or PRIx64]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'include/hw/vfio')
| -rw-r--r-- | include/hw/vfio/vfio-common.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index b1f3e92405..07f7188df4 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -168,4 +168,10 @@ int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type, #endif extern const MemoryListener vfio_prereg_listener; +int vfio_spapr_create_window(VFIOContainer *container, + MemoryRegionSection *section, + hwaddr *pgsize); +int vfio_spapr_remove_window(VFIOContainer *container, + hwaddr offset_within_address_space); + #endif /* !HW_VFIO_VFIO_COMMON_H */ |