From: Anthony PERARD <anthony.perard@citrix.com>
To: Paul Durrant <paul.durrant@citrix.com>
Cc: qemu-devel@nongnu.org, xen-devel@lists.xenproject.org,
Stefano Stabellini <sstabellini@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections
Date: Wed, 25 May 2016 16:52:32 +0100 [thread overview]
Message-ID: <20160525155232.GD1184@perard.uk.xensource.com> (raw)
In-Reply-To: <1462811480-16295-1-git-send-email-paul.durrant@citrix.com>
On Mon, May 09, 2016 at 05:31:20PM +0100, Paul Durrant wrote:
> Since Xen will correctly handle accesses to unimplemented I/O ports (by
> returning all 1's for reads and ignoring writes) there is no need for
> QEMU to register backgroud I/O sections.
>
> This patch therefore adds checks to xen_io_add/del so that sections with
> memory-region ops pointing at 'unassigned_io_ops' are ignored.
>
> Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Anthony Perard <anthony.perard@citrix.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
--
Anthony PERARD
next parent reply other threads:[~2016-05-25 15:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1462811480-16295-1-git-send-email-paul.durrant@citrix.com>
2016-05-25 15:52 ` Anthony PERARD [this message]
2016-05-25 18:04 ` [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections Paolo Bonzini
2016-05-26 9:09 ` Stefano Stabellini
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