From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: [PATCH v3 0/3] Support for nesting IOMMUs in VFIO
Date: Wed, 3 Sep 2014 17:22:42 +0200 [thread overview]
Message-ID: <20140903152241.GK28786@8bytes.org> (raw)
In-Reply-To: <1409651619-27342-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
Hi Will,
On Tue, Sep 02, 2014 at 10:53:36AM +0100, Will Deacon wrote:
> This is version three of the patches I originally posted here:
>
> RFCv1: http://permalink.gmane.org/gmane.linux.kernel.iommu/5552
> RFCv2: http://permalink.gmane.org/gmane.linux.kernel.iommu/5700
>
> Changes since RFCv2 include:
>
> - Dropped the RFC tag
> - Rebased onto 3.17-rc*
> - Iterate the support bus_types (currently just PCI) and check that
> nesting is actually supported
>
> The corresponding arm-smmu changes are included to show how the new
> domain attribute can be used.
How is this implemented in the SMMU, can there be only one stage2
mapping, so that a device can be passed through to a KVM guest or can
there be multiple stage2 mappings in parallel (like with PRI/PASID on
PCI) to support multiple translation contexts on one device?
Joerg
next prev parent reply other threads:[~2014-09-03 15:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 9:53 [PATCH v3 0/3] Support for nesting IOMMUs in VFIO Will Deacon
[not found] ` <1409651619-27342-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-02 9:53 ` [PATCH v3 1/3] iommu: introduce domain attribute for nesting IOMMUs Will Deacon
2014-09-02 9:53 ` [PATCH v3 2/3] vfio/iommu_type1: add new VFIO_TYPE1_NESTING_IOMMU IOMMU type Will Deacon
[not found] ` <1409651619-27342-3-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-11 19:12 ` Alex Williamson
[not found] ` <1410462748.2982.342.camel-85EaTFmN5p//9pzu0YdTqQ@public.gmane.org>
2014-09-12 16:55 ` Will Deacon
[not found] ` <20140912165520.GF12108-5wv7dgnIgG8@public.gmane.org>
2014-09-12 17:25 ` Alex Williamson
2014-09-02 9:53 ` [PATCH v3 3/3] iommu/arm-smmu: add support for DOMAIN_ATTR_NESTING attribute Will Deacon
[not found] ` <1409651619-27342-4-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-02 11:12 ` Varun Sethi
[not found] ` <6c60062d962340bbaeccb07c82eaae73-AZ66ij2kwaacCcN9WK45f+O6mTEJWrR4XA4E9RH9d+qIuWR1G4zioA@public.gmane.org>
2014-09-02 11:16 ` Will Deacon
2014-09-03 15:22 ` Joerg Roedel [this message]
[not found] ` <20140903152241.GK28786-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2014-09-03 16:04 ` [PATCH v3 0/3] Support for nesting IOMMUs in VFIO Will Deacon
2014-09-11 17:10 ` Will Deacon
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