[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 3/3] VT-d: Fix vt-d Device-TLB flush timeout issue.
>>> On 26.01.16 at 14:47, <quan.xu@xxxxxxxxx> wrote: > As you mentioned , I simply need to consult the bitmap along with the domain > ID array. > > +If ( test_bit(did, iommu->domid_bitmap) && iommu->domid_map[did] >= 0 ) > + d = rcu_lock_domain_by_id(iommu->domid_map[did]); > > Is it right now? Mostly, except that I don't understand the >= 0 part. > At first, I am open for any solution. > pcidevs_lock is quite a big lock. For this point, it looks much better to > add a new flag to delay hiding device. > I am also afraid that it may raise further security issues. Well, I'd say just go and see which one turns out to be less cumbersome and/or less intrusive. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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