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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-09-12 19:46:10 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-09-24 14:35:53 +0200 |
| commit | 10605204e91f46bdec98bef81923263d245515a0 (patch) | |
| tree | 2c7113231a3f298ef7b782b5259fea1a70327101 /arch/x86/kvm/x86.c | |
| parent | 31741eb11a43066a3da92996bcfccfb42e248d44 (diff) | |
| download | lwn-10605204e91f46bdec98bef81923263d245515a0.tar.gz lwn-10605204e91f46bdec98bef81923263d245515a0.zip | |
KVM: x86/mmu: Revert "KVM: x86/mmu: Remove is_obsolete() call"
Now that the fast invalidate mechanism has been reintroduced, restore
the performance tweaks for fast invalidation that existed prior to its
removal.
Paraphrasing the original changelog (commit 5ff0568374ed2 was itself a
partial revert):
Don't force reloading the remote mmu when zapping an obsolete page, as
a MMU_RELOAD request has already been issued by kvm_mmu_zap_all_fast()
immediately after incrementing mmu_valid_gen, i.e. after marking pages
obsolete.
This reverts commit 5ff0568374ed2e585376a3832857ade5daccd381.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 977b36348bed..c9a3d8efe1c2 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9425,6 +9425,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) INIT_HLIST_HEAD(&kvm->arch.mask_notifier_list); INIT_LIST_HEAD(&kvm->arch.active_mmu_pages); + INIT_LIST_HEAD(&kvm->arch.zapped_obsolete_pages); INIT_LIST_HEAD(&kvm->arch.assigned_dev_head); atomic_set(&kvm->arch.noncoherent_dma_count, 0); |