On 02/06/20 22:07, Anthony Yznaga wrote: > While investigating optimizing qemu start time for large memory guests > I found that kvm_mmu_slot_apply_flags() is walking rmaps to update > existing sptes when creating or moving a slot but that there won't be > any existing sptes to update and any sptes inserted once the new memslot > is visible won't need updating. I can't find any reason for this not to > be the case, but I've taken a more cautious approach to fixing this by > dividing things into three patches. > > Anthony Yznaga (3): > KVM: x86: remove unnecessary rmap walk of read-only memslots > KVM: x86: avoid unnecessary rmap walks when creating/moving slots > KVM: x86: minor code refactor and comments fixup around dirty logging > > arch/x86/kvm/x86.c | 106 +++++++++++++++++++++++++---------------------------- > 1 file changed, 49 insertions(+), 57 deletions(-) > Queued, thanks. Paolo
