On Fri, 2007-09-07 at 09:40 -0500, Hollis Blanchard wrote: > The PowerPC 440 Linux kernel uses 256MB pages for the linear mapping. > When we run that as a guest, those pages would of course need to be > physically contiguous in the host. > > I think long-term the KVM plan is to move memory allocation out of the > kernel (where it currently uses vmalloc) into userspace, with the idea > being that userspace could allocate memory via hugetlbfs. Anybody tried > hugetlbfs on 440 or e500? > > A poor-man's equivalent might be to limit the host memory to e.g. 256MB, > then have userspace mmap(/dev/ram) starting there. > > Another possibility is to fake out guest large pages by actually using > small pages on the host, and handle the extra faults in KVM without > notifying the guest.
This is what is done on x86. Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
