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Date: Thu, 15 May 2014 16:30:12 +0100
From: David Vrabel <david.vrabel@citrix.com>
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To: <xen-devel@lists.xenproject.org>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        <linux-kernel@vger.kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        <x86@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCHv6 0/9] x86/xen: fixes for mapping high MMIO regions (and
 remove _PAGE_IOMAP)
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On 15/04/14 15:15, David Vrabel wrote:
> This a fix for the problems with mapping high MMIO regions in certain
> cases (e.g., the RDMA drivers) as not all mappers were specifing
> _PAGE_IOMAP which meant no valid MFN could be found and the resulting
> PTEs would be set as not present, causing subsequent faults.

I've applied patches #1 to #6 to devel/for-linus-3.16.  These fix the
bug.  Patches #7 to #9 remove _PAGE_IOMAP but depend on an x86 change
which is not yet acked and I'm not going to delay (again) the bug fix
for this.

David