Re: [PATCH 0/3] stop_machine enhancements and simplifications

From: Christian Borntraeger
Date: Tue Jul 08 2008 - 12:21:47 EST


Am Dienstag, 8. Juli 2008 schrieb Rusty Russell:
> Hi all,
>
> Here are the three stop_machine patches I've queued for the next merge
> window. The first two are pretty well tested via linux-next, the last is
> recent but fairly straightforward.

Hmm, these patches dont fit on kvm.git so I tested the version from
linux-next.

When using linux-next in a kvm guest on a linux-next host this patch set
really improves the situation. On a guest with 64 cpus on a 1 cpu host
stop_machine_run seems to finish immediately.

I still have some strange problems with 25 guests * 64 cpus on one host cpu,
but this requires further analysis.

IMHO this patch set is really an improvement to the earlier version:

Acked-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>

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