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 00:35:20 +0000 |
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Hi, again
> > > 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
I will post v3 patch, soon
Best regards --- Kuninori Morimoto
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