From: Wei Wang2 <wei.wang2@amd.com>
To: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"Keir (Xen.org)" <keir@xen.org>,
Ian Campbell <Ian.Campbell@citrix.com>,
"JBeulich@suse.com" <JBeulich@suse.com>
Subject: Re: [PATCH 13 of 14 V3] libxl: bind virtual bdf to physical bdf after device assignment
Date: Tue, 10 Jan 2012 18:35:14 +0100 [thread overview]
Message-ID: <201201101835.15686.wei.wang2@amd.com> (raw)
In-Reply-To: <20236.29119.219429.36496@mariner.uk.xensource.com>
On Tuesday 10 January 2012 18:13:35 Ian Jackson wrote:
> Wei Wang writes ("[PATCH 13 of 14 V3] libxl: bind virtual bdf to physical
bdf after device assignment"):
> > libxl: bind virtual bdf to physical bdf after device assignment
>
> I confess I don't understand at all why this is needed.
>
> Ian.
Oh, the idea of this hypercall is used to allow hypervisor to trace the
virtual bdf of a physical bdf. IOMMU emulator reads iommu ppr log from host
buffer and dispatch them into guest log buffer. In the host log entry,
physical bdf is written by iommu and needs to be changed to virtual bdf when
write back to a guest. It might also be done if we could extend the interface
of xc_assign_device?
Thanks,
Wei
next prev parent reply other threads:[~2012-01-10 17:35 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-10 17:07 [PATCH 00 of 14 V3] amd iommu: support ATS device passthru on IOMMUv2 systems Wei Wang
2012-01-10 17:07 ` [PATCH 01 of 14 V3] amd iommu: Refactoring iommu ring buffer definition Wei Wang
2012-01-10 17:07 ` [PATCH 02 of 14 V3] amd iommu: Introduces new helper functions to simplify bitwise operations Wei Wang
2012-01-10 17:07 ` [PATCH 03 of 14 V3] amd iommu: Add iommu emulation for hvm guest Wei Wang
2012-01-12 11:36 ` Jan Beulich
2012-01-16 10:29 ` Wei Wang
2012-01-10 17:07 ` [PATCH 04 of 14 V3] amd iommu: Enable ppr log Wei Wang
2012-01-10 17:07 ` [PATCH 05 of 14 V3] amd iommu: Enable guest level translation Wei Wang
2012-01-10 17:07 ` [PATCH 06 of 14 V3] amd iommu: add ppr log processing into iommu interrupt handling Wei Wang
2012-01-10 17:07 ` [PATCH 07 of 14 V3] amd iommu: Add 2 hypercalls for libxc Wei Wang
2012-01-10 17:07 ` [PATCH 08 of 14 V3] amd iommu: Add a new flag to indication iommuv2 feature enabled or not Wei Wang
2012-01-10 17:07 ` [PATCH 09 of 14 V3] amd iommu: Add a hypercall for hvmloader Wei Wang
2012-01-10 17:07 ` [PATCH 10 of 14 V3] amd iommu: Enable FC bit in iommu host level PTE Wei Wang
2012-01-10 17:07 ` [PATCH 11 of 14 V3] hvmloader: Build IVRS table Wei Wang
2012-01-10 17:07 ` [PATCH 12 of 14 V3] libxc: add wrappers for new hypercalls Wei Wang
2012-01-10 17:07 ` [PATCH 13 of 14 V3] libxl: bind virtual bdf to physical bdf after device assignment Wei Wang
2012-01-10 17:13 ` Ian Jackson
2012-01-10 17:35 ` Wei Wang2 [this message]
2012-01-10 17:07 ` [PATCH 14 of 14 V3] libxl: Introduce a new guest config file parameter Wei Wang
2011-12-23 11:29 ` [PATCH 00 of 16] [V2] amd iommu: support ATS device passthru on IOMMUv2 systems Wei Wang
2011-12-23 11:29 ` [PATCH 01 of 16] amd iommu: Refactoring iommu ring buffer definition Wei Wang
2012-01-02 12:44 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 02 of 16] amd iommu: Introduces new helper functions to simplify iommu bitwise operations Wei Wang
2012-01-02 12:52 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 03 of 16] amd iommu: Add iommu emulation for hvm guest Wei Wang
2011-12-23 11:29 ` [PATCH 04 of 16] amd iommu: Enable ppr log Wei Wang
2012-01-02 13:10 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 05 of 16] amd iommu: Enable guest level translation Wei Wang
2011-12-23 11:29 ` [PATCH 06 of 16] amd iommu: add ppr log processing into iommu interrupt handling Wei Wang
2012-01-02 13:13 ` Jan Beulich
2012-01-03 8:58 ` Wei Wang2
2011-12-23 11:29 ` [PATCH 07 of 16] amd iommu: Add 2 hypercalls for libxc Wei Wang
2012-01-02 12:15 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 08 of 16] amd iommu: Add a hypercall for hvmloader Wei Wang
2012-01-02 11:41 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 09 of 16] amd iommu: add iommu mmio handler Wei Wang
2012-01-02 11:39 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 10 of 16] amd iommu: Enable FC bit in iommu host level PTE Wei Wang
2012-01-02 11:36 ` Jan Beulich
2012-01-03 10:05 ` Wei Wang2
2012-01-03 10:12 ` Jan Beulich
2012-01-03 10:37 ` Wei Wang2
2011-12-23 11:29 ` [PATCH 11 of 16] amd iommu: Add a new flag to indication iommuv2 feature enabled or not Wei Wang
2012-01-02 11:29 ` Jan Beulich
2011-12-23 11:29 ` [PATCH 12 of 16] hvmloader: Build IVRS table Wei Wang
2011-12-23 11:36 ` Ian Campbell
2011-12-23 11:52 ` Wei Wang2
2011-12-23 11:29 ` [PATCH 13 of 16] libxc: add wrappers for new hypercalls Wei Wang
2011-12-23 11:29 ` [PATCH 14 of 16] libxl: bind virtual bdf to physical bdf after device assignment Wei Wang
2011-12-23 11:37 ` Ian Campbell
2011-12-23 11:56 ` Wei Wang2
2012-01-03 16:03 ` Ian Jackson
2011-12-23 11:29 ` [PATCH 15 of 16] libxl: Introduce a new guest config file parameter Wei Wang
2012-01-03 16:02 ` Ian Jackson
2012-01-10 17:12 ` [PATCH 15 of 16] libxl: Introduce a new guest config file parameter [and 1 more messages] Ian Jackson
2012-01-11 10:20 ` Wei Wang2
2012-01-23 13:59 ` Ian Jackson
2011-12-23 11:29 ` [PATCH 16 of 16] libxl: pass iommu parameter to qemu-dm Wei Wang
2012-01-11 8:43 ` [PATCH 14 of 14 V3] libxl: Introduce a new guest config file parameter Ian Campbell
2012-01-11 10:47 ` Wei Wang2
2012-01-11 15:04 ` [PATCH 00 of 14 V3] amd iommu: support ATS device passthru on IOMMUv2 systems Jan Beulich
2012-01-11 17:36 ` Wei Wang
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