On Mon, Jul 30, 2012 at 05:38:17PM +0300, Gleb Natapov wrote: > And now for something completely different. > > So this series (or rather the last patch of it) takes different approach > to "rep ins" optimization. Instead of writing separate fast path for > it do the fast path inside emulator itself. This way nobody can say the > code is not reused! > > Patch 1,2 are now, strictly speaking, not needed, but I think this is still > nice cleanup and, in case of patch 1, eliminates some ifs at each KVM_RUN ioctl. > > Gleb Natapov (4): > Provide userspace IO exit completion callback. > KVM: emulator: make x86 emulation modes enum instead of defines > KVM: emulator: string_addr_inc() cleanup > KVM: emulator: optimize "rep ins" handling. > > arch/x86/include/asm/kvm_emulate.h | 26 +++++----- > arch/x86/include/asm/kvm_host.h | 1 + > arch/x86/kvm/emulate.c | 48 ++++++++++++++----- > arch/x86/kvm/x86.c | 92 +++++++++++++++++++++--------------- > 4 files changed, 104 insertions(+), 63 deletions(-) I tested this patch series and it really helped to improve the performance of loading the libguestfs -kernel and -initrd: https://bugzilla.redhat.com/show_bug.cgi?id=847546 Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
