diff options
| author | Alexey Kardashevskiy | 2016-07-04 05:33:06 +0200 |
|---|---|---|
| committer | David Gibson | 2016-07-05 06:31:08 +0200 |
| commit | 2e4109de8e589beecd69996ee14f24021b991c0d (patch) | |
| tree | 6ae3ddcd94419eada161c30501ec0df834790486 /hw/vfio/trace-events | |
| parent | vfio: Add host side DMA window capabilities (diff) | |
| download | qemu-2e4109de8e589beecd69996ee14f24021b991c0d.tar.gz qemu-2e4109de8e589beecd69996ee14f24021b991c0d.tar.xz qemu-2e4109de8e589beecd69996ee14f24021b991c0d.zip | |
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 'hw/vfio/trace-events')
| -rw-r--r-- | hw/vfio/trace-events | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events index 0b02a3bd54..4bb7690c46 100644 --- a/hw/vfio/trace-events +++ b/hw/vfio/trace-events @@ -121,3 +121,5 @@ vfio_prereg_listener_region_add_skip(uint64_t start, uint64_t end) "%"PRIx64" - vfio_prereg_listener_region_del_skip(uint64_t start, uint64_t end) "%"PRIx64" - %"PRIx64 vfio_prereg_register(uint64_t va, uint64_t size, int ret) "va=%"PRIx64" size=%"PRIx64" ret=%d" vfio_prereg_unregister(uint64_t va, uint64_t size, int ret) "va=%"PRIx64" size=%"PRIx64" ret=%d" +vfio_spapr_create_window(int ps, uint64_t ws, uint64_t off) "pageshift=0x%x winsize=0x%"PRIx64" offset=0x%"PRIx64 +vfio_spapr_remove_window(uint64_t off) "offset=%"PRIx64 |