[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2/4 v2] x86/EPT: refine direct MMIO checking when determining EMT
>>> On 28.04.14 at 09:59, <kevin.tian@xxxxxxxxx> wrote: >> From: Jan Beulich [mailto:JBeulich@xxxxxxxx] >> @@ -810,10 +811,7 @@ int epte_get_entry_emt(struct domain *d, >> return -1; >> } >> >> - if ( !iommu_enabled || >> - (rangeset_is_empty(d->iomem_caps) && >> - rangeset_is_empty(d->arch.ioport_caps) && >> - !has_arch_pdevs(d)) ) >> + if ( !need_iommu(d) && !cache_flush_permitted(d) ) > > &&->|| No, specifically not - we shouldn't force WB in either case. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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