Commit 31741eb1 authored Sep 12, 2019 by Sean Christopherson Committed by Paolo Bonzini Sep 24, 2019

KVM: x86/mmu: Revert "Revert "KVM: MMU: reclaim the zapped-obsolete page first""



Now that the fast invalidate mechanism has been reintroduced, restore
the performance tweaks for fast invalidation that existed prior to its
removal.

Paraphrashing the original changelog:

  Introduce a per-VM list to track obsolete shadow pages, i.e. pages
  which have been deleted from the mmu cache but haven't yet been freed.
  When page reclaiming is needed, zap/free the deleted pages first.

This reverts commit 52d5dedc.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 4506ecf4

arch/x86/include/asm/kvm_host.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -865,6 +865,7 @@ struct kvm_arch {
		* Hash table of struct kvm_mmu_page.
		*/
		struct list_head active_mmu_pages;
		struct list_head zapped_obsolete_pages;
		struct kvm_page_track_notifier_node mmu_sp_tracker;
		struct kvm_page_track_notifier_head track_notifier_head;

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