[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] ATS and dependent features
ATS should be a host feature controlled by iommu, and I don't think dom0 can control it from Xen's architecture. Perhaps we need to forbid dom0 controlling these features. Xiantao > -----Original Message----- > From: Jan Beulich [mailto:JBeulich@xxxxxxxx] > Sent: Tuesday, November 27, 2012 5:42 PM > To: Zhang, Xiantao; xen-devel > Subject: ATS and dependent features > > All, > > while investigating an issue with some device not working under Xen without > "ats=off", I started wondering whether it is correct to allow the Dom0 kernel > concurrent control over ATS, PRI, and PASID - it would seem to me that with > Xen controlling the IOMMU, it should also have exclusive control over the > enabling of those features. > > Thanks for any comments in this regard, > Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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