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| author | Yishai Hadas <yishaih@nvidia.com> | 2022-09-08 21:34:43 +0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2022-09-08 21:59:00 +0300 |
| commit | 80c4b92a2dc48cce82a0348add48533db7e07314 (patch) | |
| tree | 43ceafc9db32536a1a784a366c74bf2a3f69c75e /drivers/vfio/Kconfig | |
| parent | 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 (diff) | |
| download | linux-80c4b92a2dc48cce82a0348add48533db7e07314.tar.xz | |
vfio: Introduce the DMA logging feature support
Introduce the DMA logging feature support in the vfio core layer.
It includes the processing of the device start/stop/report DMA logging
UAPIs and calling the relevant driver 'op' to do the work.
Specifically,
Upon start, the core translates the given input ranges into an interval
tree, checks for unexpected overlapping, non aligned ranges and then
pass the translated input to the driver for start tracking the given
ranges.
Upon report, the core translates the given input user space bitmap and
page size into an IOVA kernel bitmap iterator. Then it iterates it and
call the driver to set the corresponding bits for the dirtied pages in a
specific IOVA range.
Upon stop, the driver is called to stop the previous started tracking.
The next patches from the series will introduce the mlx5 driver
implementation for the logging ops.
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Link: https://lore.kernel.org/r/20220908183448.195262-6-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/Kconfig')
| -rw-r--r-- | drivers/vfio/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index 6130d00252ed..86c381ceb9a1 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -3,6 +3,7 @@ menuconfig VFIO tristate "VFIO Non-Privileged userspace driver framework" select IOMMU_API select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64) + select INTERVAL_TREE help VFIO provides a framework for secure userspace device drivers. See Documentation/driver-api/vfio.rst for more details. |