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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 52d5dedc79
.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -865,6 +865,7 @@ struct kvm_arch {
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* Hash table of struct kvm_mmu_page.
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*/
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struct list_head active_mmu_pages;
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struct list_head zapped_obsolete_pages;
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struct kvm_page_track_notifier_node mmu_sp_tracker;
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struct kvm_page_track_notifier_head track_notifier_head;
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