In LinuxOnLinux, the guest is just another linux process (or rather, one per virtual CPU). So what this patch does is allow such a garden-variety process to have more than one address space and switch between them.2 Essentially what I'm doing is treating the standard linux VM as a huge software-loaded TLB. When the guest gets a TLB miss, the VMM calls mmap() to insert the translation. Without the patch the address space has to be remapped on every guest context switch. The patch adds address-space IDs to make that unnecessary. What I'm wondering is if there are any *other* uses for this (not just virtualisation). I know qemu uses mmap() to create its address spaces if CONFIG_SOFTMMU is not defined, and could thus benefit. -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
