This series started from looking at mmu_unsync_walk for the ubsan thread. Patches 1 and 2 are the result of the discussions in that thread.
Patches 3 to 9 do more cleanups in __kvm_sync_page and its callers. Among other changes, it removes kvm_sync_page_transient and avoids duplicate code between __kvm_sync_page and kvm_sync_pages. I stopped where I had questions about the existing kvm_mmu_get_page code (see patch 8 for the question). However perhaps more cleanups are possible, also thanks to Takuya's work on that function and link_shadow_page. Patches 10 to 12 are just micro-optimizations. Guangrong, it would be great if you took a look since you know this part of KVM very well. I have tested this series minus patch 9, and it survived installation of various Linux and Windows guests with EPT disabled. Of course before committing the patches I will retest with patch 9 included. Paolo Paolo Bonzini (11): KVM: MMU: Fix ubsan warnings KVM: MMU: introduce kvm_mmu_flush_or_zap KVM: MMU: move TLB flush out of __kvm_sync_page KVM: MMU: use kvm_sync_page in kvm_sync_pages KVM: MMU: cleanup __kvm_sync_page and its callers KVM: MMU: invert return value of FNAME(sync_page) and *kvm_sync_page* KVM: MMU: move zap/flush to kvm_mmu_get_page KVM: MMU: coalesce zapping page after mmu_sync_children KVM: mark memory barrier with smp_mb__after_atomic KVM: MMU: simplify last_pte_bitmap KVM: MMU: micro-optimize gpte_access Xiao Guangrong (1): KVM: MMU: check kvm_mmu_pages and mmu_page_path indices arch/x86/include/asm/kvm_host.h | 6 +- arch/x86/kvm/mmu.c | 216 ++++++++++++++++++++++------------------ arch/x86/kvm/paging_tmpl.h | 11 +- virt/kvm/kvm_main.c | 2 +- 4 files changed, 126 insertions(+), 109 deletions(-) -- 1.8.3.1
