Commit bc3b3c10 authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

KVM: x86/mmu: Drop a redundant, broken remote TLB flush 



A recent commit to fix the calls to kvm_flush_remote_tlbs_with_address()
in kvm_zap_gfn_range() inadvertantly added yet another flush instead of
fixing the existing flush.  Drop the redundant flush, and fix the params
for the existing flush.

Cc: stable@vger.kernel.org
Fixes: 2822da44 ("KVM: x86/mmu: fix parameters to kvm_flush_remote_tlbs_with_address")
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Cc: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
Message-Id: <20211022010005.1454978-2-seanjc@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 61b05a9f

arch/x86/kvm/mmu/mmu.c

+2 −4
Original line number Diff line number Diff line
@@ -5752,13 +5752,11 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end) 
		for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++)

			flush = kvm_tdp_mmu_zap_gfn_range(kvm, i, gfn_start,

							  gfn_end, flush);

		if (flush)

			kvm_flush_remote_tlbs_with_address(kvm, gfn_start,

							   gfn_end - gfn_start);

	}



	if (flush)

		kvm_flush_remote_tlbs_with_address(kvm, gfn_start, gfn_end);

		kvm_flush_remote_tlbs_with_address(kvm, gfn_start,

						   gfn_end - gfn_start);



	kvm_dec_notifier_count(kvm, gfn_start, gfn_end);