From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53105) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2Q3i-0006JO-2j for qemu-devel@nongnu.org; Sun, 23 Apr 2017 18:32:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d2Q3h-0005Bb-0Y for qemu-devel@nongnu.org; Sun, 23 Apr 2017 18:32:46 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:100::1]:45512) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d2Q3g-0005BU-Qs for qemu-devel@nongnu.org; Sun, 23 Apr 2017 18:32:44 -0400 From: Aurelien Jarno Date: Mon, 24 Apr 2017 00:32:40 +0200 Message-Id: <20170423223240.17917-1-aurelien@aurel32.net> Subject: [Qemu-devel] [PATCH v2] s390x/misc_helper.c: wrap s390_virtio_hypercall in BQL List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Alexander Graf , Richard Henderson , Aurelien Jarno s390_virtio_hypercall can trigger IO events and interrupts, most notably when using virtio-ccw devices. Reviewed-by: Alexander Graf Signed-off-by: Aurelien Jarno --- target/s390x/misc_helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 4946b56ab3..aec737d707 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -307,7 +307,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num) switch (num) { case 0x500: /* KVM hypercall */ + qemu_mutex_lock_iothread(); r = s390_virtio_hypercall(env); + qemu_mutex_unlock_iothread(); break; case 0x44: /* yield */ -- 2.11.0