From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44144) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ceobp-000438-0H for qemu-devel@nongnu.org; Fri, 17 Feb 2017 14:54:25 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ceobm-0005Un-7U for qemu-devel@nongnu.org; Fri, 17 Feb 2017 14:54:25 -0500 Received: from mail.kernel.org ([198.145.29.136]:34332) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ceobm-0005UJ-0d for qemu-devel@nongnu.org; Fri, 17 Feb 2017 14:54:22 -0500 Date: Fri, 17 Feb 2017 21:54:17 +0200 From: "Michael S. Tsirkin" Message-ID: <1487361200-29966-8-git-send-email-mst@redhat.com> References: <1487361200-29966-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1487361200-29966-1-git-send-email-mst@redhat.com> Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL 07/23] exec: make address_space_cache_destroy idempotent List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Maydell , Paolo Bonzini , Stefan Hajnoczi , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Peter Crosthwaite , Richard Henderson From: Paolo Bonzini Clear cache->mr so that address_space_cache_destroy does nothing the second time it is called. Reviewed-by: Stefan Hajnoczi Signed-off-by: Paolo Bonzini Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- exec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/exec.c b/exec.c index 6fa337b..865a1e8 100644 --- a/exec.c +++ b/exec.c @@ -3166,6 +3166,7 @@ void address_space_cache_destroy(MemoryRegionCache = *cache) xen_invalidate_map_cache_entry(cache->ptr); } memory_region_unref(cache->mr); + cache->mr =3D NULL; } =20 /* Called from RCU critical section. This function has the same --=20 MST