Messages in this thread | | | From | Kuninori Morimoto <> | Subject | Re: [PATCH v2] dmaengine: rcar-dmac: don't use DMAC error interrupt | Date | Fri, 15 Jun 2018 00:33:12 +0000 |
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Hi Geert
Thank you for your feedback
> > Current rcar-dmac is using DMAC error interrupt which will handle all > > channel's error. But in this design, error handling itself will be > > issue if user want to use virtualization, multi OS, etc. > > This patch removes current DMAC error interrupt handling, and handle it > > on each channel interrupt handler. > > Just wondering, what's the usage pattern where this causes a problem? > Do you plan to export part of a SYS-DMAC instance to a guest?
"virtualization, multi OS" part is maybe misleading. It will be problem on non virtualization, too.
> How to maintain host/guest isolation?
This is another topic/issue, I think
Best regards --- Kuninori Morimoto
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