Messages in this thread | | | Date | Thu, 18 Apr 2013 20:35:38 +0200 | From | Joerg Roedel <> | Subject | Re: [PATCH 1/2 V2] iommu/amd: Add workaround for ERBT1312 |
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On Thu, Apr 18, 2013 at 11:59:58AM -0500, Suthikulpanit, Suravee wrote: > One last concern I have for this patch is the case when we re-enable > the interrupt, then another interrupt happens while we processing > the log and set the bit. If the interrupt thread doesn't check this > right before the thread exits the handler. We could still end up > leaving the interrupt disabled.
That can't happen, the patch checks whether the bit is really 0 and then it processes the event/ppr-log entries. If any new entry is queued while we process the logs another interrupt will be fired and the irq-thread will run again. So we will not miss any log entry.
Joerg
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