numam-dpdk/doc
Nithin Dabilpuram 016763c219 vfio: do not merge contiguous areas
In order to save DMA entries limited by kernel both for external
memory and hugepage memory, an attempt was made to map physically
contiguous memory in one go. This cannot be done as VFIO IOMMU type1
does not support partially unmapping a previously mapped memory
region while Heap can request for multi page mapping and
partial unmapping.
Hence for going back to old method of mapping/unmapping at
memseg granularity, this commit reverts
commit d1c7c0cdf7 ("vfio: map contiguous areas in one go")

Also add documentation on what module parameter needs to be used
to increase the per-container dma map limit for VFIO.

Fixes: d1c7c0cdf7 ("vfio: map contiguous areas in one go")
Cc: stable@dpdk.org

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: David Christensen <drc@linux.vnet.ibm.com>
2021-03-01 11:58:24 +01:00
..
api doc: add missing network layers in API index 2020-11-27 01:51:27 +01:00
guides vfio: do not merge contiguous areas 2021-03-01 11:58:24 +01:00
logo doc: change theme of guides 2015-12-13 22:30:47 +01:00
meson.build doc: support building HTML guides with meson 2018-10-27 23:24:22 +02:00