Re: [PATCH 7/7] x86: switch the VIA 32-bit DMA quirk to use the struct device flag
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- To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- Subject: Re: [PATCH 7/7] x86: switch the VIA 32-bit DMA quirk to use the struct device flag
- From: Christoph Hellwig <hch@xxxxxx>
- Date: Mon, 28 May 2018 08:19:00 +0200
- Cc: Christoph Hellwig <hch@xxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Fenghua Yu <fenghua.yu@xxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx
- In-reply-to: <alpine.DEB.2.21.1805280808280.1585@nanos.tec.linutronix.de>
- References: <20180525143512.1466-1-hch@lst.de> <20180525143512.1466-8-hch@lst.de> <alpine.DEB.2.21.1805280808280.1585@nanos.tec.linutronix.de>
- User-agent: Mutt/1.5.17 (2007-11-01)
On Mon, May 28, 2018 at 08:10:40AM +0200, Thomas Gleixner wrote:
> n Fri, 25 May 2018, Christoph Hellwig wrote:
>
> x86/pci-dma: ...
>
> Please
>
> > Instead of globally disabling > 32bit DMA using the arch_dma_supported
> > hook walk the PCI bus under the actually affected bridge and mark every
> > device with the dma_32bit_limit flag. This also gets rid of the
> > arch_dma_supported hook entirely.
>
> Shouldn't this go before the other two?
Which other two? The boot optional removal patches? They just remove
the visible interface, but keep the implementation which is converted
to the better mechanism here, so I think the order makes sense.
But I might be missing something..
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