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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-09-12 19:46:09 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-09-24 14:35:47 +0200 |
| commit | 31741eb11a43066a3da92996bcfccfb42e248d44 (patch) | |
| tree | 8fdf7a41b2fe75662fa91f7237c4d0e56fb16326 /arch/x86 | |
| parent | 4506ecf4855e53c3e5a2b40312a240696863582c (diff) | |
| download | lwn-31741eb11a43066a3da92996bcfccfb42e248d44.tar.gz lwn-31741eb11a43066a3da92996bcfccfb42e248d44.zip | |
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.h | 1 |
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; |