linux-kernel - Re: [PATCH v8 0/13] introduce GNTTABOP_cache

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Message-ID: <20141110184446.GJ25609@e104818-lin.cambridge.arm.com>
Date:	Mon, 10 Nov 2014 18:44:46 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"Ian.Campbell@...rix.com" <Ian.Campbell@...rix.com>,
	David Vrabel <david.vrabel@...rix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v8 0/13] introduce GNTTABOP_cache_flush

On Mon, Nov 10, 2014 at 04:12:40PM +0000, Stefano Stabellini wrote:
> this patch series introduces support for GNTTABOP_cache_flush to perform
> cache maintenance operation on foreign pages and reverts the current
> code based on XENFEAT_grant_map_identity.
> 
> It also provides a very slow fallback by bouncing on the swiotlb buffer,
> in case the hypercall is not available.
> 
> v7 introduces a flag named dma_coherent in dev_archdata and an accessor
> function named is_device_dma_coherent in asm/dma-mapping.h under arm and
> arm64.

Apart from a few minor comments I gave already, the series looks fine to
me. Once addressed, you can add:

Reviewed-by: Catalin Marinas <catalin.marinas@....com>
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