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| author | Maciej S. Szmigiero <maciej.szmigiero@oracle.com> | 2021-12-06 20:54:23 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-12-08 04:24:28 -0500 |
| commit | e0c2b6338ac8ca30d438157dc45396c3c1148563 (patch) | |
| tree | ac3b17c46d9eb3d04723eddbe9ede38e443a0a71 | |
| parent | 7cd08553ab103a7ebca79035eb35b73418b2f475 (diff) | |
| download | linux-e0c2b6338ac8ca30d438157dc45396c3c1148563.tar.bz2 | |
KVM: x86: Don't call kvm_mmu_change_mmu_pages() if the count hasn't changed
There is no point in calling kvm_mmu_change_mmu_pages() for memslot
operations that don't change the total page count, so do it just for
KVM_MR_CREATE and KVM_MR_DELETE.
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <9e56b7616a11f5654e4ab486b3237366b7ba9f2a.1638817640.git.maciej.szmigiero@oracle.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index aaf89c001c5c..29a030a3c797 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -11783,7 +11783,8 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, const struct kvm_memory_slot *new, enum kvm_mr_change change) { - if (!kvm->arch.n_requested_mmu_pages) + if (!kvm->arch.n_requested_mmu_pages && + (change == KVM_MR_CREATE || change == KVM_MR_DELETE)) kvm_mmu_change_mmu_pages(kvm, kvm_mmu_calculate_default_mmu_pages(kvm)); |