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250ce1b4d2
It is cheap to take tdp_mmu_pages_lock in all write-side critical sections. We already do it all the time when zapping with read_lock(), so it is not a problem to do it from the kvm_tdp_mmu_zap_all() path (aka kvm_arch_flush_shadow_all(), aka VM destruction and MMU notifier release). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lore.kernel.org/r/20231125083400.1399197-4-pbonzini@redhat.com Signed-off-by: Sean Christopherson <seanjc@google.com>