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Message-ID: <55A914D5.7080900@citrix.com>
Date: Fri, 17 Jul 2015 15:44:37 +0100
From: Julien Grall <julien.grall@citrix.com>
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To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, <ian.campbell@citrix.com>,
        <linux-kernel@vger.kernel.org>, David Vrabel <david.vrabel@citrix.com>,
        <xen-devel@lists.xenproject.org>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        <linux-arm-kernel@lists.infradead.org>
Subject: Re: [Xen-devel] [PATCH v2 09/20] xen/biomerge: Don't allow biovec
 to be merge when Linux is not using 4KB page
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On 17/07/15 14:20, Stefano Stabellini wrote:
> We would have to run some benchmarks, but I think it would still be a
> win. We should write an ad-hoc __pfn_to_mfn translation function that
> operates on a range of pfns and simply checks whether an entry is
> present in that range. It should be just as fast as __pfn_to_mfn. I
> would definitely recommend it.

I'd like to see a basic support of 64KB support on Xen pushed in Linux
upstream before looking to possible improvement in the code. Can we
defer this as the follow-up of this series?

Regards,

-- 
Julien Grall
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