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