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authorSean Christopherson <sean.j.christopherson@intel.com>2019-09-12 19:46:09 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2019-09-24 14:35:47 +0200
commit31741eb11a43066a3da92996bcfccfb42e248d44 (patch)
tree8fdf7a41b2fe75662fa91f7237c4d0e56fb16326 /arch/x86
parent4506ecf4855e53c3e5a2b40312a240696863582c (diff)
downloadlinux-31741eb11a43066a3da92996bcfccfb42e248d44.tar.bz2
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 52d5dedc79bdcbac2976159a172069618cf31be5. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/kvm_host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 78f0a919173e..53e0b956ed3c 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -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;