X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Frel_notes%2Fknown_issues.rst;h=7b620853585a38fbec5e56266b1de755de3270d1;hb=4d4ebca430474180cdc5cb14edfda04ee4189d19;hp=12a1876cfc01f754c1a0a1cd2cb5eda6eb6a4bb9;hpb=048f830326227cf05d9ef6e4899764d10cc86970;p=dpdk.git diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst index 12a1876cfc..7b62085358 100644 --- a/doc/guides/rel_notes/known_issues.rst +++ b/doc/guides/rel_notes/known_issues.rst @@ -31,7 +31,35 @@ Known Issues and Limitations ============================ -This section describes known issues with the DPDK software, Release 1.8.0. +This section describes known issues with the DPDK software. + +Unit Test for Link Bonding may fail at test_tlb_tx_burst() +---------------------------------------------------------- ++--------------------------------+--------------------------------------------------------------------------------------+ +| Title | Unit Test for Link Bonding may fail at test_tlb_tx_burst() | +| | | ++================================+======================================================================================+ +| Reference # | IXA00390304 | +| | | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Description | Unit tests will fail at test_tlb_tx_burst function with error for uneven distribution| +| | of packets. | +| | | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Implication | Unit test link_bonding_autotest will fail | +| | | +| | | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Resolution/ Workaround | There is no workaround available. | +| | | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Affected Environment/ Platform | Fedora 20 | +| | | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Driver/Module | Link Bonding | +| | | ++--------------------------------+--------------------------------------------------------------------------------------+ + Pause Frame Forwarding does not work properly on igb ---------------------------------------------------- @@ -404,7 +432,7 @@ Some hardware off-load functions are not supported by the VF Driver | | | +--------------------------------+--------------------------------------------------------------------------------------+ | Implication | Any configuration for these items in the VF register will be ignored. The behavior | -| | is dependant on the current PF setting. | +| | is dependent on the current PF setting. | | | | +--------------------------------+--------------------------------------------------------------------------------------+ | Resolution/ Workaround | For the PF (Physical Function) status on which the VF driver depends, there is an | @@ -655,8 +683,8 @@ Binding PCI devices to igb_uio fails on Linux* kernel 3.9 when more than one dev | | | +--------------------------------+--------------------------------------------------------------------------------------+ -GCC might generate Intel® AVX instructions forprocessors without Intel® AVX support ------------------------------------------------------------------------------------ +GCC might generate Intel® AVX instructions for processors without Intel® AVX support +------------------------------------------------------------------------------------ +--------------------------------+--------------------------------------------------------------------------------------+ | Title | Gcc might generate Intel® AVX instructions for processors without Intel® AVX support | @@ -721,11 +749,11 @@ Ethertype filter could receive other packets (non-assigned) in Niantic | | | +--------------------------------+--------------------------------------------------------------------------------------+ -Cannot set link speed on Intel® 40G ethernet controller +Cannot set link speed on Intel® 40G Ethernet controller ------------------------------------------------------- +--------------------------------+--------------------------------------------------------------------------------------+ -| Title | Cannot set link speed on Intel® 40G ethernet controller | +| Title | Cannot set link speed on Intel® 40G Ethernet controller | | | | +================================+======================================================================================+ | Reference # | IXA00386379 | @@ -736,7 +764,7 @@ Cannot set link speed on Intel® 40G ethernet controller | | It cannot set the link to specific speed. | | | | +--------------------------------+--------------------------------------------------------------------------------------+ -| Implication | The link speed cannot be changed forcedly, though it can be configured by | +| Implication | The link speed cannot be changed forcibly, though it can be configured by | | | application. | | | | +--------------------------------+--------------------------------------------------------------------------------------+ @@ -750,11 +778,11 @@ Cannot set link speed on Intel® 40G ethernet controller | | | +--------------------------------+--------------------------------------------------------------------------------------+ -Stopping the port does not down the link on Intel® 40G ethernet controller +Stopping the port does not down the link on Intel® 40G Ethernet controller -------------------------------------------------------------------------- +--------------------------------+--------------------------------------------------------------------------------------+ -| Title | Stopping the port does not down the link on Intel® 40G ethernet controller | +| Title | Stopping the port does not down the link on Intel® 40G Ethernet controller | | | | +================================+======================================================================================+ | Reference # | IXA00386380 | @@ -777,3 +805,35 @@ Stopping the port does not down the link on Intel® 40G ethernet controller | Driver/Module | Poll Mode Driver (PMD) | | | | +--------------------------------+--------------------------------------------------------------------------------------+ + +Devices bound to igb_uio with VT-d enabled do not work on Linux* kernel 3.15-3.17 +--------------------------------------------------------------------------------- + ++--------------------------------+--------------------------------------------------------------------------------------+ +| Title | Devices bound to igb_uio with VT-d enabled do not work on Linux* kernel 3.15-3.17 | ++================================+======================================================================================+ +| Description | | When VT-d is enabled (iommu=pt intel_iommu=on), devices are 1:1 mapped. | +| | In the Linux* kernel unbinding devices from drivers removes that mapping which | +| | result in IOMMU errors. | +| | | Introduced in Linux `kernel 3.15 commit `_, | +| | solved in Linux `kernel 3.18 commit `_. | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Implication | | Devices will not be allowed to access memory, resulting in following kernel errors:| +| | | ``dmar: DRHD: handling fault status reg 2`` | +| | | ``dmar: DMAR:[DMA Read] Request device [02:00.0] fault addr a0c58000`` | +| | | ``DMAR:[fault reason 02] Present bit in context entry is clear`` | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Resolution/ Workaround | | Use earlier or later kernel versions, or avoid driver binding on boot by | +| | blacklisting the driver modules. | +| | | ie. in the case of ixgbe, we can pass the kernel command line option: | +| | | ``modprobe.blacklist=ixgbe`` | +| | | This way we do not need to unbind the device to bind it to igb_uio. | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Affected Environment/ Platform | Linux* systems with kernel versions 3.15 to 3.17 | ++--------------------------------+--------------------------------------------------------------------------------------+ +| Driver/Module | igb_uio module | ++--------------------------------+--------------------------------------------------------------------------------------+