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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 1/3] xen/vt-d: need barriers to workaround CLFLUSH
>>> On 05.05.15 at 04:45, <tiejun.chen@xxxxxxxxx> wrote: > Does this work for everyone? Please first of all explain why the interfaces in asm/flushtlb.h can't be used here (at least when flushing entire pages). Because - as said before - for a complete fix you'd need to deal with the CLFLUSH use(s) elsewhere in the system too. Btw, isn't the !iommus_incoherent check in that function inverted? I.e. why would we _not_ need to flush caches when IOMMUs are not coherent (and why would flushing be needed when they're coherent anyway)? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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