On 21.06.2012, at 10:48, Takuya Yoshikawa wrote: > I added further optimization based on Avi's advice and my rmap_pde work. > - patch [5-6] > > The new test result was impressively good, see below, and THP page > invalidation was more than 5 times faster on my x86 machine. > > I also noticed that GUI's responsiveness on the host during swapping the > guest's memory improved a lot. > > Before: > ... > 19.852 us | __mmu_notifier_invalidate_range_start(); > 28.033 us | __mmu_notifier_invalidate_range_start(); > 19.066 us | __mmu_notifier_invalidate_range_start(); > 44.715 us | __mmu_notifier_invalidate_range_start(); > 31.613 us | __mmu_notifier_invalidate_range_start(); > 20.659 us | __mmu_notifier_invalidate_range_start(); > 19.979 us | __mmu_notifier_invalidate_range_start(); > 20.416 us | __mmu_notifier_invalidate_range_start(); > 20.632 us | __mmu_notifier_invalidate_range_start(); > 22.316 us | __mmu_notifier_invalidate_range_start(); > ... > > After: > ... > 4.089 us | __mmu_notifier_invalidate_range_start(); > 4.096 us | __mmu_notifier_invalidate_range_start(); > 3.560 us | __mmu_notifier_invalidate_range_start(); > 3.376 us | __mmu_notifier_invalidate_range_start(); > 3.772 us | __mmu_notifier_invalidate_range_start(); > 3.353 us | __mmu_notifier_invalidate_range_start(); > 3.332 us | __mmu_notifier_invalidate_range_start(); > 3.332 us | __mmu_notifier_invalidate_range_start(); > 3.332 us | __mmu_notifier_invalidate_range_start(); > 3.337 us | __mmu_notifier_invalidate_range_start(); > ... > > Takuya Yoshikawa (6): > KVM: MMU: Use __gfn_to_rmap() to clean up kvm_handle_hva() > KVM: Introduce hva_to_gfn_memslot() for kvm_handle_hva() > KVM: MMU: Make kvm_handle_hva() handle range of addresses > KVM: Introduce kvm_unmap_hva_range() for kvm_mmu_notifier_invalidate_range_start() > KVM: Separate rmap_pde from kvm_lpage_info->write_count > KVM: MMU: Avoid handling same rmap_pde in kvm_handle_hva_range() > > arch/powerpc/include/asm/kvm_host.h | 2 + > arch/powerpc/kvm/book3s_64_mmu_hv.c | 42 +++++++++++++++----- > arch/x86/include/asm/kvm_host.h | 3 +- > arch/x86/kvm/mmu.c | 72 +++++++++++++++++++++++------------ > arch/x86/kvm/x86.c | 13 ++++++- > include/linux/kvm_host.h | 8 ++++ > virt/kvm/kvm_main.c | 3 +- > 7 files changed, 104 insertions(+), 39 deletions(-) Paulus, please review the book3s_hv parts more closely. I didn't spot anything obviously wrong, but rmap magic is still slightly puzzling to me, so me reviewing there doesn't mean much :). Alex -- 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
