Message-ID: <565745DF.8030008@citrix.com>
Date: Thu, 26 Nov 2015 17:48:15 +0000
From: David Vrabel <david.vrabel@citrix.com>
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To: Boris Ostrovsky <boris.ostrovsky@oracle.com>, <konrad.wilk@oracle.com>,
        <david.vrabel@citrix.com>
CC: <linux-kernel@vger.kernel.org>, <stable@vger.kernel.org>,
        <xen-devel@lists.xen.org>
Subject: Re: [Xen-devel] [PATCH RESEND] xen/gntdev: Grant maps should not
 be subject to NUMA balancing
References: <1447186233-3194-1-git-send-email-boris.ostrovsky@oracle.com>
In-Reply-To: <1447186233-3194-1-git-send-email-boris.ostrovsky@oracle.com>
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On 10/11/15 20:10, Boris Ostrovsky wrote:
> Doing so will cause the grant to be unmapped and then, during
> fault handling, the fault to be mistakenly treated as NUMA hint
> fault.
> 
> In addition, even if those maps could partcipate in NUMA
> balancing, it wouldn't provide any benefit since we are unable
> to determine physical page's node (even if/when VNUMA is
> implemented).
> 
> Marking grant maps' VMAs as VM_IO will exclude them from being
> part of NUMA balancing.

Applied to for-linus-4.4, thanks.

David
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