Hi Santosh
On 01/05/2018 01:10 PM, santosh wrote:
Hi Maxim,
On Friday 05 January 2018 04:02 PM, Maxime Coquelin wrote:
Hi Jianfeng,
On 10/11/2017 12:33 PM, Jianfeng Tan wrote:
If we want to enable IOVA mode, introduced by
commit 93878cf0255e ("eal: introduce helper API for IOVA mode"),
we need PMDs (for PCI devices) to expose this flag.
Signed-off-by: Jianfeng Tan<jianfeng....@intel.com>
---
[...]
Ferruh, I see you also faced problems with KNI, how did you solved it?
By checking lsmod for rte_kni module and if found then set .iova_mode = _pa,
refer [1].
You may follow similar approach.. meaning detect emulation mode Or if not then
other-way to introduce --iova-mode=<> eal arg.
Thanks for the information
Detecting whether we are in host or guest is not that trivial, and as
Peter pointed me out, the VT-d specifies the 39bits guest address width
so there are certainly some processors in the wild using it.
And I don't think introducing a new EAL arg in -stable is a good idea.
If this is the only solution, then we should keep PA by default.
When using intel IOMMU, I think the best solution is to forbid VA mode
if GAW is 39 bits.
Regards,
Maxime
[1] http://dpdk.org/browse/dpdk/tree/lib/librte_eal/linuxapp/eal/eal.c#n810
Thanks.
Thanks,
Maxime
[0]: https://bugzilla.redhat.com/show_bug.cgi?id=1530957#c3
