linux-kernel - Re: [PATCH 0/5 v3] Fix NVMe driver support on Power with 32-bit DMA

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Date:	Mon, 26 Oct 2015 18:27:46 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	nacc@...ux.vnet.ibm.com
Cc:	willy@...ux.intel.com, keith.busch@...el.com,
	benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
	aik@...abs.ru, david@...son.dropbear.id.au, hch@...radead.org,
	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH 0/5 v3] Fix NVMe driver support on Power with 32-bit DMA

From: Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
Date: Fri, 23 Oct 2015 13:54:20 -0700

> 1) add a generic dma_get_page_shift implementation that just returns
> PAGE_SHIFT

I won't object to this patch series, but if I had implemented this I
would have required the architectures to implement this explicitly,
one-by-one.  I think it is less error prone and more likely to end
up with all the architectures setting this correctly.
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