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Sean Christopherson authored
Call kvm_mmu_commit_zap_page() after exiting the "prepare zap" loop in kvm_recover_nx_lpages() to finish zapping pages in the unlikely event that the loop exited due to lpage_disallowed_mmu_pages being empty. Because the recovery thread drops mmu_lock() when rescheduling, it's possible that lpage_disallowed_mmu_pages could be emptied by a different thread without to_zap reaching zero despite to_zap being derived from the number of disallowed lpages. Fixes: 1aa9b957 ("kvm: x86: mmu: Recovery of shattered NX large pages") Cc: Junaid Shahid <junaids@google.com> Cc: stable@vger.kernel.org Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Message-Id: <20200923183735.584-2-sean.j.christopherson@intel.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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