Re: [libvirt] [PATCH] Qemu: ask for memory preallocation with large pages
On Thu, Jan 07, 2010 at 02:53:20PM +0100, Daniel Veillard wrote:
The -mem-prealloc flag should be used when using large pages
This ensures qemu tries to allocate all required memory immediately,
rather than when first used. The latter mode will crash qemu
if hugepages aren't available when accessed, while the former
should gracefully fallback to non-hugepages.
* src/qemu/qemu_conf.c: add -mem-prealloc flag to qemu command line
when using large pages
ACK, definitely don't want VMs crashing when attempting to page in
huge pages which don't exist anymore
Daniel
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