diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2021-01-22 11:46:00 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-01-26 22:58:55 +0530 |
| commit | 03d939c7e3d8800a9feb54808929c5776ac510eb (patch) | |
| tree | 007b7998d6618bd6423be049e5e5661fc8907173 /Documentation/admin-guide | |
| parent | 9f3c14d4433b98c87f958128045539f297a2fa6d (diff) | |
| download | linux-stable-03d939c7e3d8800a9feb54808929c5776ac510eb.tar.gz linux-stable-03d939c7e3d8800a9feb54808929c5776ac510eb.tar.bz2 linux-stable-03d939c7e3d8800a9feb54808929c5776ac510eb.zip | |
dmaengine: idxd: add module parameter to force disable of SVA
Add a module parameter that overrides the SVA feature enabling. This keeps
the driver in legacy mode even when intel_iommu=sm_on is set. In this mode,
the descriptor fields must be programmed with dma_addr_t from the Linux DMA
API for source, destination, and completion descriptors.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/161134110457.4005461.13171197785259115852.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index c722ec19cd00..c25786b95419 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1673,6 +1673,12 @@ In such case C2/C3 won't be used again. idle=nomwait: Disable mwait for CPU C-states + idxd.sva= [HW] + Format: <bool> + Allow force disabling of Shared Virtual Memory (SVA) + support for the idxd driver. By default it is set to + true (1). + ieee754= [MIPS] Select IEEE Std 754 conformance mode Format: { strict | legacy | 2008 | relaxed } Default: strict |