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| author | John Levon <john.levon@nutanix.com> | 2021-03-31 16:49:52 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-03-31 16:49:52 +0100 |
| commit | 14b237fc80473bf4419a2bccda4cf7e7d382c174 (patch) | |
| tree | 959e0cc1c4d2557f624df6fa5c189a8cdc92993f /lib/pci.c | |
| parent | 0ae00cbb9edcc3879b1276cd61479d668a7f1ec9 (diff) | |
| download | libvfio-user-14b237fc80473bf4419a2bccda4cf7e7d382c174.zip libvfio-user-14b237fc80473bf4419a2bccda4cf7e7d382c174.tar.gz libvfio-user-14b237fc80473bf4419a2bccda4cf7e7d382c174.tar.bz2 | |
rework DMA callbacks (#396)
This fixes a number of issues with how DMA is handled, based on some changes by
Thanos Makatos:
- rename callbacks to register/unregister, as there is not necessarily
any mapping
- provide the (large) page-aligned mapped start and size, the page size used,
as well as the protection flags: some API users need these
- for convenience, provide the virtual address separately that corresponds to
the mapped region
- we should only require a DMA controller to use vfu_addr_to_sg(),
not an unregister callback
- the callbacks should return errno not -errno
- region removal was incorrectly updating the region array
- various other cleanups and clarifications
Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>
Diffstat (limited to 'lib/pci.c')
0 files changed, 0 insertions, 0 deletions