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    SubjectRe: [PATCH v2 5/7] KVM: Introduce PV kick in flush tlb
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    On Tue, 3 Jul 2012 05:07:13 -0300, Marcelo Tosatti <mtosatti@redhat.com> wrote:
    > On Mon, Jun 04, 2012 at 10:38:17AM +0530, Nikunj A. Dadhania wrote:
    > > In place of looping continuously introduce a halt if we do not succeed
    > > after some time.
    > >
    > > For vcpus that were running an IPI is sent. In case, it went to sleep
    > > between this, we will be doing flush_on_enter(harmless). But as a
    > > flush IPI was already sent, that will be processed in ipi handler,
    > > this might result into something undesireable, i.e. It might clear the
    > > flush_mask of a new request.
    > >
    > > So after sending an IPI and waiting for a while, do a halt and wait
    > > for a kick from the last vcpu.
    > >
    > > Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
    > > Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
    >
    > Again, was it determined that this is necessary from data of
    > benchmarking on the in-guest-mode/out-guest-mode patch?
    >
    No, this is more of a fix wrt algo.



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