Messages in this thread | | | Date | Mon, 16 Apr 2018 05:33:30 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH] x86/dma-mapping: override via_no_dac for new VIA PCI bridges |
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On Mon, Apr 16, 2018 at 05:26:56PM +0800, David Wang wrote: > PCI bridges integrated in new VIA chipset/SoC have no DAC issue. > Enable DAC for the platforms with these chipset/SoC can improve DMA performance about > 20% when DRAM size > 4GB. >
So we get an exception to an exception? Is there any way to figure out the PCI IDs actually affected?
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