From: Joerg Roedel <joro@8bytes.org>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Paul Brook <paul@codesourcery.com>,
qemu-devel@nongnu.org, avi@redhat.com, kvm@vger.kernel.org,
Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Subject: Re: [Qemu-devel] Re: [RFC PATCH 4/7] ide: IOMMU support
Date: Thu, 15 Jul 2010 11:10:31 +0200 [thread overview]
Message-ID: <20100715091031.GD23755@8bytes.org> (raw)
In-Reply-To: <4C3E2C2E.70507@codemonkey.ws>
On Wed, Jul 14, 2010 at 04:29:18PM -0500, Anthony Liguori wrote:
> On 07/14/2010 03:13 PM, Paul Brook wrote:
>> Well, ok, the function name needs fixing too. However I think the only thing
>> missing from the current API is that it does not provide a way to determine
>> which device is performing the access.
>
> I agree with Paul.
>
> The right approach IMHO is to convert devices to use bus-specific
> functions to access memory. The bus specific functions should have a
> device argument as the first parameter.
If this means a seperate interface for device dma accesses and not fold
that functionality into the cpu_physical_memory* interface I agree too :-)
Joerg
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: avi@redhat.com,
Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>,
Paul Brook <paul@codesourcery.com>,
kvm@vger.kernel.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [RFC PATCH 4/7] ide: IOMMU support
Date: Thu, 15 Jul 2010 11:10:31 +0200 [thread overview]
Message-ID: <20100715091031.GD23755@8bytes.org> (raw)
In-Reply-To: <4C3E2C2E.70507@codemonkey.ws>
On Wed, Jul 14, 2010 at 04:29:18PM -0500, Anthony Liguori wrote:
> On 07/14/2010 03:13 PM, Paul Brook wrote:
>> Well, ok, the function name needs fixing too. However I think the only thing
>> missing from the current API is that it does not provide a way to determine
>> which device is performing the access.
>
> I agree with Paul.
>
> The right approach IMHO is to convert devices to use bus-specific
> functions to access memory. The bus specific functions should have a
> device argument as the first parameter.
If this means a seperate interface for device dma accesses and not fold
that functionality into the cpu_physical_memory* interface I agree too :-)
Joerg
next prev parent reply other threads:[~2010-07-15 9:10 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
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 [this message]
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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