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    SubjectRe: [RFC 0/2] kvm: Transcendent Memory (tmem) on KVM
    On 03/15/2012 08:02 PM, Konrad Rzeszutek Wilk wrote:
    > >
    > > Nice. This takes care of the tail-end of the streaming (the more
    > > important one - since it always involves a cold copy). What about the
    > > other side? Won't the read code invoke cleancache_get_page() for every
    > > page? (this one is just a null hypercall, so it's cheaper, but still
    > > expensive).
    >
    > That is something we should fix - I think it was mentioned in the frontswap
    > email thread the need for batching and it certainly seems required as those
    > hypercalls aren't that cheap.

    In fact when tmem was first proposed I asked for two changes - make it
    batchable, and make it asynchronous (so we can offload copies to a dma
    engine, etc). Of course that would have made tmem significantly more
    complicated.

    --
    error compiling committee.c: too many arguments to function



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