Re: [ofa-general] Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

2007-12-13 Thread Caitlin Bestler
On Dec 13, 2007 12:30 AM, Or Gerlitz [EMAIL PROTECTED] wrote: Roland Dreier wrote: I think the right fix for iSER would be to make iSER work even for devices that don't support FMRs. For example cxgb3 doesn't implement FMRs so if anyone ever updates iSER to work on iWARP and not just IB,

Re: [ofa-general] Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

2007-12-13 Thread Joachim Fenkes
[EMAIL PROTECTED] wrote on 13.12.2007 20:22:49: On Dec 13, 2007 12:30 AM, Or Gerlitz [EMAIL PROTECTED] wrote: The current implementation of the open iscsi initiator makes sure to issue commands in thread (sleepable) context, see iscsi_xmitworker and references to it in

RE: [ofa-general] Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

2007-12-13 Thread Joachim Fenkes
Caitlin Bestler [EMAIL PROTECTED] wrote on 13.12.2007 22:08:34: To clarify, an FMR Work Request is simply posted to the SendQ like any other Work Request (of course the QP has to be privileged, or it will complete in error). An SQ Post should never block. This would require hardware support,

Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

2007-12-12 Thread Christoph Raisch
Or Gerlitz [EMAIL PROTECTED] wrote on 12.12.2007 13:14:25: Joachim Fenkes wrote: Roland Dreier [EMAIL PROTECTED] wrote on 10.12.2007 22:47:37: It's an optional device feature, so this should be OK (although the iSER driver currently seems to depend on a device supporting FMRs, which is

Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

2007-12-12 Thread Or Gerlitz
Joachim Fenkes wrote: Roland Dreier [EMAIL PROTECTED] wrote on 10.12.2007 22:47:37: It's an optional device feature, so this should be OK (although the iSER driver currently seems to depend on a device supporting FMRs, which is probably going to be a problem with iWARP support in the future

Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

2007-12-12 Thread Roland Dreier
What is the fix you suggest, to add a device query that tells you for which verbs the documentation does not apply? or enhance the code of the map_phys_fmr verb within the ehca driver to return error if called from non-sleepable context? I think the right fix for iSER would be to