From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Subject: Re: [PATCH 7/7] x86: switch the VIA 32-bit DMA quirk to use the
	struct device flag
Date: Mon, 28 May 2018 08:19:00 +0200
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Cc: Fenghua Yu <fenghua.yu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Tony Luck <tony.luck-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	linux-ia64-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
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	Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
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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..