From: Paolo Bonzini <pbonzini@redhat.com>
To: "Jiang, Yunhong" <yunhong.jiang@intel.com>
Cc: "eduard.munteanu@linux360.ro" <eduard.munteanu@linux360.ro>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"david@gibson.dropbear.id.au" <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] Are there any IOMMU emulation in QEMU for x86 platform
Date: Tue, 19 Nov 2013 10:13:49 +0100 [thread overview]
Message-ID: <528B2BCD.10201@redhat.com> (raw)
In-Reply-To: <DDCAE26804250545B9934A2056554AA01FBC9304@ORSMSX108.amr.corp.intel.com>
Il 19/11/2013 07:34, Jiang, Yunhong ha scritto:
> Hi, all
> I noticed there are several patchset has been sent out about IOMMU emulation like
> http://lists.gnu.org/archive/html/qemu-devel/2011-10/msg03764.html,
> http://lists.gnu.org/archive/html/qemu-devel/2011-01/msg03196.html .
> Also I noticed that PPC platform has IOMMU emulation support in QEMU
> already. Are there any plan to support IOMMU emulation in QEMU for x86 now?
Not that I know of. Of course, patches are welcome.
> And also, does it requires the real host platform have the IOMMU to support the QEMU IOMMU emulation? Or it will be a purely software emulation?
For emulated devices it could be purely software. Nested device
assignment would require a host IOMMU, and would require the host IOMMU
driver to do some kind of shadow-paging.
Paolo
next prev parent reply other threads:[~2013-11-19 9:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 6:34 [Qemu-devel] Are there any IOMMU emulation in QEMU for x86 platform Jiang, Yunhong
2013-11-19 9:13 ` Paolo Bonzini [this message]
2013-11-20 0:01 ` Jiang, Yunhong
2013-12-02 9:37 ` Knut Omang
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