From: Avi Kivity <avi@redhat.com>
To: Chris Wright <chrisw@sous-sol.org>
Cc: Paul Brook <paul@codesourcery.com>,
Anthony Liguori <anthony@codemonkey.ws>,
Joerg Roedel <joro@8bytes.org>,
Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>,
qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] Re: [RFC PATCH 4/7] ide: IOMMU support
Date: Thu, 15 Jul 2010 20:22:31 +0300 [thread overview]
Message-ID: <4C3F43D7.1040301@redhat.com> (raw)
In-Reply-To: <20100715171710.GZ14017@sequoia.sous-sol.org>
On 07/15/2010 08:17 PM, Chris Wright wrote:
>
>> For emulated device, it seems like we can ignore ATS completely, no?
>>
> Not if you want to emulate an ATS capable device ;)
>
What I meant was that the whole request translation, invalidate, dma
using a translated address thing is invisible to software. We can
emulate an ATS capable device by going through the iommu every time.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@redhat.com>
To: Chris Wright <chrisw@sous-sol.org>
Cc: kvm@vger.kernel.org, Joerg Roedel <joro@8bytes.org>,
qemu-devel@nongnu.org, Paul Brook <paul@codesourcery.com>,
Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Subject: Re: [Qemu-devel] Re: [RFC PATCH 4/7] ide: IOMMU support
Date: Thu, 15 Jul 2010 20:22:31 +0300 [thread overview]
Message-ID: <4C3F43D7.1040301@redhat.com> (raw)
In-Reply-To: <20100715171710.GZ14017@sequoia.sous-sol.org>
On 07/15/2010 08:17 PM, Chris Wright wrote:
>
>> For emulated device, it seems like we can ignore ATS completely, no?
>>
> Not if you want to emulate an ATS capable device ;)
>
What I meant was that the whole request translation, invalidate, dma
using a translated address thing is invisible to software. We can
emulate an ATS capable device by going through the iommu every time.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2010-07-15 17:22 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-14 5:45 [RFC PATCH 0/7] AMD IOMMU emulation patchset Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [RFC PATCH 1/7] Generic IOMMU layer Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 6:07 ` malc
2010-07-14 6:07 ` [Qemu-devel] " malc
2010-07-14 22:47 ` Eduard - Gabriel Munteanu
2010-07-14 22:47 ` Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [RFC PATCH 2/7] AMD IOMMU emulation Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 20:16 ` Paul Brook
2010-07-14 20:16 ` Paul Brook
2010-07-14 5:45 ` [RFC PATCH 3/7] pci: call IOMMU hooks Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 7:37 ` Isaku Yamahata
2010-07-14 7:37 ` Isaku Yamahata
2010-07-14 22:50 ` Eduard - Gabriel Munteanu
2010-07-14 22:50 ` Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [RFC PATCH 4/7] ide: IOMMU support Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 13:53 ` Paul Brook
2010-07-14 13:53 ` [Qemu-devel] " Paul Brook
2010-07-14 18:33 ` Joerg Roedel
2010-07-14 18:33 ` [Qemu-devel] " Joerg Roedel
2010-07-14 20:13 ` Paul Brook
2010-07-14 21:29 ` Anthony Liguori
2010-07-14 21:29 ` Anthony Liguori
2010-07-14 22:24 ` Chris Wright
2010-07-14 22:24 ` Chris Wright
2010-07-15 10:28 ` Paul Brook
2010-07-15 10:28 ` Paul Brook
2010-07-15 16:52 ` Chris Wright
2010-07-15 16:52 ` Chris Wright
2010-07-15 17:02 ` Avi Kivity
2010-07-15 17:02 ` Avi Kivity
2010-07-15 17:17 ` Chris Wright
2010-07-15 17:17 ` Chris Wright
2010-07-15 17:22 ` Avi Kivity [this message]
2010-07-15 17:22 ` Avi Kivity
2010-07-15 17:25 ` Chris Wright
2010-07-15 17:25 ` Chris Wright
2010-07-15 17:27 ` Eduard - Gabriel Munteanu
2010-07-15 17:27 ` Eduard - Gabriel Munteanu
2010-07-15 17:22 ` Joerg Roedel
2010-07-15 17:22 ` Joerg Roedel
2010-07-15 17:14 ` Chris Wright
2010-07-15 17:14 ` Chris Wright
2010-07-15 9:10 ` Joerg Roedel
2010-07-15 9:10 ` Joerg Roedel
2010-07-15 12:45 ` Anthony Liguori
2010-07-15 12:45 ` Anthony Liguori
2010-07-15 14:45 ` Joerg Roedel
2010-07-15 14:45 ` Joerg Roedel
2010-07-15 16:45 ` Eduard - Gabriel Munteanu
2010-07-15 16:45 ` Eduard - Gabriel Munteanu
2010-07-15 17:42 ` Anthony Liguori
2010-07-15 17:42 ` Anthony Liguori
2010-07-15 10:33 ` Paul Brook
2010-07-15 10:33 ` Paul Brook
2010-07-15 12:42 ` Anthony Liguori
2010-07-15 12:42 ` Anthony Liguori
2010-07-15 14:02 ` Paul Brook
2010-07-15 14:02 ` Paul Brook
2010-07-14 23:39 ` Eduard - Gabriel Munteanu
2010-07-14 23:39 ` Eduard - Gabriel Munteanu
2010-07-15 9:22 ` Joerg Roedel
2010-07-15 9:22 ` Joerg Roedel
2010-07-15 10:49 ` Paul Brook
2010-07-15 10:49 ` Paul Brook
2010-07-15 14:59 ` Joerg Roedel
2010-07-15 14:59 ` Joerg Roedel
2010-07-14 23:11 ` Eduard - Gabriel Munteanu
2010-07-14 23:11 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-15 10:58 ` Paul Brook
2010-07-15 10:58 ` [Qemu-devel] " Paul Brook
2010-07-14 5:45 ` [RFC PATCH 5/7] rtl8139: " Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [RFC PATCH 6/7] eepro100: " Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [RFC PATCH 7/7] ac97: " Eduard - Gabriel Munteanu
2010-07-14 5:45 ` [Qemu-devel] " Eduard - Gabriel Munteanu
2010-07-14 6:09 ` malc
2010-07-14 6:09 ` [Qemu-devel] " malc
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