Hi, This patch series has optimized control flow of clearing dirty log and improved its performance by ~38%. Patch 2 has more details about optimization. It also got rid of many variants of the handle_changed_spte family of functions and converged logic to one handle_changed_spte() function. It also remove tdp_mmu_set_spte_no_[acc_track|dirty_log] and various booleans for controlling them. Thanks Vipin v2: - Clear dirty log and age gfn range does not go through handle_changed_spte, they handle their SPTE changes locally to improve their speed. - Clear only specific bits atomically when updating SPTEs in clearing dirty log and aging gfn range functions. - Removed tdp_mmu_set_spte_no_[acc_track|dirty_log] APIs. - Converged all handle_changed_spte related functions to one place. v1: https://lore.kernel.org/lkml/20230125213857.824959-1-vipinsh@xxxxxxxxxx/ Vipin Sharma (5): KVM: x86/mmu: Make separate function to check for SPTEs atomic write conditions KVM: x86/mmu: Optimize SPTE change flow for clear-dirty-log KVM: x86/mmu: Optimize SPTE change for aging gfn range KVM: x86/mmu: Remove handle_changed_spte_dirty_log() KVM: x86/mmu: Merge all handle_changed_pte* functions. arch/x86/kvm/mmu/tdp_iter.h | 29 +++++-- arch/x86/kvm/mmu/tdp_mmu.c | 163 +++++++++++------------------------- 2 files changed, 72 insertions(+), 120 deletions(-) -- 2.39.1.519.gcb327c4b5f-goog
