path: root/doc
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authorCunming Liang <>2015-11-04 16:45:38 +0800
committerThomas Monjalon <>2015-11-04 15:27:41 +0100
commitfe685de2b1b6b922cf9ecc107534bafa1741184b (patch)
treeb87839d91ee21e17dbb7192f0fdb50fea9571a8b /doc
parentd283059b7cdd48bb1aec2da4f894df8348810258 (diff)
igb: fix VF start with PF stopped
When igb runs as a PF, mbox interrupt is prerequisite to make VF start normally. And PF sometimes won't 'dev_start', so the mbox interrupt register during 'dev_init' is required. The patch rolls back the interrupt register for mbox,lsc to the 'dev_init'. As UIO doesn't support multiple vector, mbox has to occupy the only one. It adds condition check on 'dev_start', rxq interrupt is not allowed when PF running in IOV mode via UIO. Signed-off-by: Cunming Liang <>
Diffstat (limited to 'doc')
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 0c7abe9..4ad9287 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -114,6 +114,10 @@ Drivers
in Intel I210 NIC, as EtherType in RX descriptor is in bits 8:10 of
Packet Type and not in the default bits 0:2.
+* **igb: Fixed VF start with PF stopped.**
+ VF needs the PF interrupt support initialized even if not started.
* **ixgbe: Fixed issue with X550 DCB.**
Fixed a DCB issue with x550 where for 8 TCs (Traffic Classes), if a packet