Commit e0c2b633 authored by Maciej S. Szmigiero's avatar Maciej S. Szmigiero Committed by Paolo Bonzini
Browse files

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: default avatarMaciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: default avatarSean Christopherson <seanjc@google.com>
Message-Id: <9e56b7616a11f5654e4ab486b3237366b7ba9f2a.1638817640.git.maciej.szmigiero@oracle.com>
parent 7cd08553

arch/x86/kvm/x86.c

+2 −1
Original line number Diff line number Diff line
@@ -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));