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xen-devel
Re: [Xen-devel] Live migration fails under heavy network use
On Wed, Feb 21, 2007 at 12:06:52AM +0000, Keir Fraser wrote:
> > Urk. Checkout line 204 of privcmd.c
> > That doesn't look too 64b clean to me....
Hmm, I never looked at the Linux privcmd driver before. It seems like
you're prefaulting all the pages in the ioctl() in on the ioctl.
Currently on Solaris we're demand-faulting each page in the mmap() ...
It looks like we're not checking that we ca actually map the page at the
time of the ioctl(), thus it's not ending up as marked with that bit.
Looks like our bug...
thanks,
john
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