From: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
To: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
Cc: kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org,
dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
David Gibson
<david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
Subject: Re: [PATCH 1/3] Device isolation group infrastructure (v3)
Date: Thu, 09 Feb 2012 08:39:28 +1100 [thread overview]
Message-ID: <1328737168.2903.35.camel@pasglop> (raw)
In-Reply-To: <20120208152748.GD22598-5C7GfCeVMHo@public.gmane.org>
On Wed, 2012-02-08 at 16:27 +0100, Joerg Roedel wrote:
> Again, device grouping is done by the IOMMU drivers, so this all
> belongs
> into the generic iommu-code rather than the driver core.
Except that there isn't really a "generic iommu code"... discovery,
initialization & matching of iommu vs. devices etc... that's all
implemented in the arch specific iommu code.
Cheers,
Ben.
> I think it makes sense to introduce a device->iommu pointer which
> depends on CONFIG_IOMMU_API and put the group information into it.
> This also has the benefit that we can consolidate all the
> device->arch.iommu pointers into device->iommu as well.
>
>
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: David Gibson <david@gibson.dropbear.id.au>,
dwmw2@infradead.org, iommu@lists.linux-foundation.org,
aik@ozlabs.ru, qemu-devel@nongnu.org, alex.williamson@redhat.com,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] Device isolation group infrastructure (v3)
Date: Thu, 09 Feb 2012 08:39:28 +1100 [thread overview]
Message-ID: <1328737168.2903.35.camel@pasglop> (raw)
In-Reply-To: <20120208152748.GD22598@amd.com>
On Wed, 2012-02-08 at 16:27 +0100, Joerg Roedel wrote:
> Again, device grouping is done by the IOMMU drivers, so this all
> belongs
> into the generic iommu-code rather than the driver core.
Except that there isn't really a "generic iommu code"... discovery,
initialization & matching of iommu vs. devices etc... that's all
implemented in the arch specific iommu code.
Cheers,
Ben.
> I think it makes sense to introduce a device->iommu pointer which
> depends on CONFIG_IOMMU_API and put the group information into it.
> This also has the benefit that we can consolidate all the
> device->arch.iommu pointers into device->iommu as well.
>
>
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: kvm@vger.kernel.org, aik@ozlabs.ru, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, qemu-devel@nongnu.org,
alex.williamson@redhat.com, dwmw2@infradead.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH 1/3] Device isolation group infrastructure (v3)
Date: Thu, 09 Feb 2012 08:39:28 +1100 [thread overview]
Message-ID: <1328737168.2903.35.camel@pasglop> (raw)
In-Reply-To: <20120208152748.GD22598@amd.com>
On Wed, 2012-02-08 at 16:27 +0100, Joerg Roedel wrote:
> Again, device grouping is done by the IOMMU drivers, so this all
> belongs
> into the generic iommu-code rather than the driver core.
Except that there isn't really a "generic iommu code"... discovery,
initialization & matching of iommu vs. devices etc... that's all
implemented in the arch specific iommu code.
Cheers,
Ben.
> I think it makes sense to introduce a device->iommu pointer which
> depends on CONFIG_IOMMU_API and put the group information into it.
> This also has the benefit that we can consolidate all the
> device->arch.iommu pointers into device->iommu as well.
>
>
next prev parent reply other threads:[~2012-02-08 21:39 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-01 4:46 RFC: Device isolation groups David Gibson
2012-02-01 4:46 ` [Qemu-devel] " David Gibson
2012-02-01 4:46 ` David Gibson
[not found] ` <1328071614-8320-1-git-send-email-david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
2012-02-01 4:46 ` [PATCH 1/3] Device isolation group infrastructure (v3) David Gibson
2012-02-01 4:46 ` [Qemu-devel] " David Gibson
2012-02-01 4:46 ` David Gibson
[not found] ` <1328071614-8320-2-git-send-email-david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
2012-02-08 15:27 ` Joerg Roedel
2012-02-08 15:27 ` [Qemu-devel] " Joerg Roedel
2012-02-08 15:27 ` Joerg Roedel
[not found] ` <20120208152748.GD22598-5C7GfCeVMHo@public.gmane.org>
2012-02-08 21:39 ` Benjamin Herrenschmidt [this message]
2012-02-08 21:39 ` [Qemu-devel] " Benjamin Herrenschmidt
2012-02-08 21:39 ` Benjamin Herrenschmidt
2012-02-09 11:28 ` Joerg Roedel
2012-02-09 11:28 ` [Qemu-devel] " Joerg Roedel
2012-02-09 11:28 ` Joerg Roedel
[not found] ` <20120209112805.GN22598-5C7GfCeVMHo@public.gmane.org>
2012-02-10 0:21 ` David Gibson
2012-02-10 0:21 ` [Qemu-devel] " David Gibson
2012-02-10 0:21 ` David Gibson
2012-02-08 21:43 ` Benjamin Herrenschmidt
2012-02-08 21:43 ` [Qemu-devel] " Benjamin Herrenschmidt
2012-02-08 21:43 ` Benjamin Herrenschmidt
2012-02-09 1:40 ` David Gibson
2012-02-09 1:40 ` [Qemu-devel] " David Gibson
2012-02-09 1:40 ` David Gibson
2012-02-01 4:46 ` [PATCH 2/3] device_isolation: Support isolation on POWER p5ioc2 bridges David Gibson
2012-02-01 4:46 ` [Qemu-devel] " David Gibson
2012-02-01 4:46 ` David Gibson
[not found] ` <1328071614-8320-3-git-send-email-david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
2012-02-01 18:58 ` Alex Williamson
2012-02-01 18:58 ` [Qemu-devel] " Alex Williamson
2012-02-01 18:58 ` Alex Williamson
[not found] ` <1328122724.6937.216.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-02-01 19:15 ` Alex Williamson
2012-02-01 19:15 ` [Qemu-devel] " Alex Williamson
2012-02-01 19:15 ` Alex Williamson
2012-02-01 4:46 ` [PATCH 3/3] device_isolation: Support isolation on POWER p7ioc (IODA) bridges David Gibson
2012-02-01 4:46 ` [Qemu-devel] " David Gibson
2012-02-01 4:46 ` David Gibson
[not found] ` <1328071614-8320-4-git-send-email-david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
2012-02-01 19:17 ` Alex Williamson
2012-02-01 19:17 ` [Qemu-devel] " Alex Williamson
2012-02-01 19:17 ` Alex Williamson
[not found] ` <1328123825.6937.227.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-02-02 0:23 ` David Gibson
2012-02-02 0:23 ` [Qemu-devel] " David Gibson
2012-02-02 0:23 ` David Gibson
2012-02-01 20:08 ` RFC: Device isolation groups Alex Williamson
2012-02-01 20:08 ` [Qemu-devel] " Alex Williamson
2012-02-01 20:08 ` Alex Williamson
[not found] ` <1328126919.6937.254.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-02-02 1:24 ` David Gibson
2012-02-02 1:24 ` [Qemu-devel] " David Gibson
2012-02-02 1:24 ` David Gibson
[not found] ` <20120202012414.GE8700-MK4v0fQdeXQXU02nzanrWNbf9cGiqdzd@public.gmane.org>
2012-02-29 19:30 ` Alex Williamson
2012-02-29 19:30 ` [Qemu-devel] " Alex Williamson
2012-02-29 19:30 ` Alex Williamson
[not found] ` <1330543855.29701.180.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-03-09 3:40 ` David Gibson
2012-03-09 3:40 ` [Qemu-devel] " David Gibson
2012-03-09 3:40 ` David Gibson
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