Re: [ewg] [PATCH] IB/ehca: Protect QP against destroying until all async events for it are handled.
From: Roland Dreier <hidden>
Date: 2008-05-07 15:32:34
2 messages, 2 authors, 2008-05-07 · open the first message on its own page
From: Roland Dreier <hidden>
Date: 2008-05-07 15:32:34
> We are not sure if this should be fixed in the driver or in uverbs itself. > Roland, what's your opinion about this? Would be nice to be able to fix it in uverbs but I don't see how. In particular a kernel consumer has to have the same guarantee that no async events will come in after destroy QP returns. And I don't see any way generic code can provide a guarantee about what low-level driver code may do internally.
From: Stefan Roscher <hidden>
Date: 2008-05-07 16:00:54
On Wednesday 07 May 2008 17:32:03 Roland Dreier wrote:
> We are not sure if this should be fixed in the driver or in uverbs itself. > Roland, what's your opinion about this? Would be nice to be able to fix it in uverbs but I don't see how. In particular a kernel consumer has to have the same guarantee that no async events will come in after destroy QP returns. And I don't see any way generic code can provide a guarantee about what low-level driver code may do internally.
I agree, that's why I posted the driver fix first. So, will you apply it next? Regards Stefan