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    SubjectRe: [PATCH] intel-iommu: Default to non-coherent for domains unattached to iommus
    * Chris Wright ( wrote:
    > * David Woodhouse ( wrote:
    > > So if you were to ditch the whole idea of a per-domain runtime update,
    > > and instead calculate a global value for 'iommu_coherency' at boot time,
    > > by iterating over for_each_active_iommu()¹, I think that would be a
    > > better way to deal with the issue. And you *could* really call that a
    > > 'fix'.
    > >
    > > Make sense?
    > Ideally, yes. Not sure we can practically do it though. Would have to
    > be sure we force incoherent access mode for the busted hw.

    Forgot to mention, the simple patch may be the better choice for -stable
    (assuming the page table mapping issue...isn't).
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      Last update: 2011-11-12 01:49    [W:0.025 / U:0.940 seconds]
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