Messages in this thread | | | Date | Sun, 06 May 2012 12:36:12 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH v4 06/10] KVM: MMU: fast path of handling guest page fault |
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On 05/05/2012 05:08 PM, Marcelo Tosatti wrote: > It would be better if all these complications introduced by lockless > updates can be avoided, say using A/D bits as Avi suggested.
Note that using A/D bits introduces new tradeoffs (when just a few bits are dirtied per iteration, we reduce guest overhead, but increase host overhead, since it has to scan a large number of sptes), and also a large fraction of deployed systems don't have A/D bits support. But it should affect our thinking - since in the long term all hosts will have it.
-- error compiling committee.c: too many arguments to function
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