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I am adding interrupt support for LWP, whose spec is available at http://support.amd.com/us/Processor_TechDocs/43724.pdf. Basically OS can specify an interrupt vector in LWP_CFG MSR; the interrupt will be triggered when event buffer overflows. For HVM guests, I want to re-inject this interrupt back into the guest VM. Here is one idea similar to virtualized PMU: It first registers a special interrupt ha...

Now that the feature is officially documented (see http://support.amd.com/us/Processor_TechDocs/24593.pdf), I think it makes sense to also allow HVM guests to make use of it. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Andre Przywara <andre.przywara@amd.com> --- 2010-05-04.orig/xen/arch/x86/hvm/hvm.c 2010-04-22 14:43:25.000000000 +0200 +++ 2010-05-04/xen/arch/x86/hvm/hv...

...> > > However, they need details about what to fix, which I don''t know either. > > > > Could you pls. give me some hints which I can forward to the manufacturer > > support? > > They should look at AMD IOMMU spec. For example, > support.amd.com/us/Processor_TechDocs/48882.pdf. Tables 77 and 79. > > More specifically, the problem is these two entries: > > (XEN) AMD-Vi: IVHD Device Entry: type 0x48 id 0x0 flags 0xd7 > (XEN) AMD-Vi: IVHD Special: 0000:00:14.0 variety 0x1 handle 0x8 > .. > (XEN) AMD-Vi: IVHD Device Entry: type 0x48 id 0...

Hello, since applying the patches related to XSA-36 Xen recognizes a broken IVRS ACPI table and disables I/O virtualisation. I contacted the manufacturer of the mainboard/BIOS and they want to help me by providing a patched BIOS - so far so good. However, they need details about what to fix, which I don''t know either. Could you pls. give me some hints which I can forward to the

...ew features advertised by iommu extended feature register. It introduces guest level IO translation and supports state-of-the-art ATS/ATC devices with demand paging capability. Please refer to AMD IOMMU Architectural Specification [1] for more details. Thanks, Wei [1] http://support.amd.com/us/Processor_TechDocs/48882.pdf _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel