On Tue, Jan 29, 2008 at 08:05:20PM +0200, Avi Kivity wrote: > If a hypervisor mandates (host virtual) == (guest physical), it would work. > x86 still misses the dual-tagged tlb, so mmu notifiers are needed > regardless. With s390, they have an additional offset parameter, so (host
Yep. NPT is certainly better given two levels are bad enough. The mmu notifiers aren't really a performance problem unlike the three levels would be (the bigger cost is likely the ipi for the tlb flushes on a smp guest on smp host, and they cost nothing on up guest). > virtual) == (guest physical) + offset, so qemu can coexist with the guest, > and dual tagged tlb so that a host invalidate also evicts guest tlb > entries. Thanks! ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
