From: Avi Kivity <avi@redhat.com>
To: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: KVM list <kvm@vger.kernel.org>
Subject: Re: iommu external module
Date: Thu, 02 Oct 2008 18:30:47 +0300 [thread overview]
Message-ID: <48E4E927.6070801@redhat.com> (raw)
In-Reply-To: <20081002145845.GB6909@il.ibm.com>
Muli Ben-Yehuda wrote:
> On Thu, Oct 02, 2008 at 03:45:33PM +0300, Avi Kivity wrote:
>
>
>> We can fix this fairly simply by having an external module for the
>> iommus, much like kvm itself. I don't think it should be too
>> difficult, and it will provide a lot of testing to us, and important
>> functionality for our users.
>>
>
> The problem is that if we want to enable DMA translation for a given
> device, we have to do it before it has any outstanding DMAs. As long
> as you have a device that you want to enable translation for as
> built-in, you'll need the IOMMU built-in as well, or will need to
> reset the device when you load the IOMMU. That's why all IOMMUs are
> currently built-in.
>
This is for using with kvm as an external module, so there is no
question of a built in device. It's purely for older kernels; I'm not
calling for modular iommus.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2008-10-02 15:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-02 12:45 iommu external module Avi Kivity
2008-10-02 14:58 ` Muli Ben-Yehuda
2008-10-02 15:30 ` Avi Kivity [this message]
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