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[Xen-devel] Re: PCI Passthrough using GART on AMD CPUs?
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] Re: PCI Passthrough using GART on AMD CPUs? |
| From: | Jeff Williams <alcander@xxxxxx> |
| Date: | Sat, 17 May 2008 19:29:49 +0000 (UTC) |
| Delivery-date: | Sat, 17 May 2008 12:30:27 -0700 |
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Keir Fraser <keir.fraser <at> eu.citrix.com> writes: > > The functionality of that patch is to allow dom0 to use the GART as a target > aperture for 32-bit PCI devices to access memory above 4GB. The GART cannot > possibly implement the functionality of the new AMD or Intel IOMMUs, as it > does not intercept *every* DMA access issued by guest-controlled devices. > The patch you would like to see is an impossibility. > > -- Keir > Thank you Keir for clarifying this. I guess I'll just have to wait, or get an Intel VT-d board. Too bad Skulltrail is still so expensive.. Jeff _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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