From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49903) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f3nsS-0003eE-Jm for qemu-devel@nongnu.org; Wed, 04 Apr 2018 15:15:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f3nsR-0001JM-JB for qemu-devel@nongnu.org; Wed, 04 Apr 2018 15:15:24 -0400 From: Thomas Huth Date: Wed, 4 Apr 2018 21:15:06 +0200 Message-Id: <1522869306-17292-1-git-send-email-thuth@redhat.com> Subject: [Qemu-devel] [PATCH for-2.12] hw/arm/integratorcp: Don't do things that could be fatal in the instance_init List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell , qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org An instance_init function must not fail - and might be called multiple times, e.g. during device introspection with the 'device-list-properties' QMP command. Since the integratorcm device ignores this rule, QEMU currently aborts in this case (though it really should not): echo "{'execute':'qmp_capabilities'}"\ "{'execute':'device-list-properties',"\ "'arguments':{'typename':'integrator_core'}}" \ | arm-softmmu/qemu-system-arm -M integratorcp,accel=qtest -qmp stdio {"QMP": {"version": {"qemu": {"micro": 91, "minor": 11, "major": 2}, "package": "build-all"}, "capabilities": []}} {"return": {}} RAMBlock "integrator.flash" already registered, abort! Aborted (core dumped) Move the problematic code to the realize() function instead to fix this problem. Signed-off-by: Thomas Huth --- hw/arm/integratorcp.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c index e8303b8..9e2df34 100644 --- a/hw/arm/integratorcp.c +++ b/hw/arm/integratorcp.c @@ -266,7 +266,6 @@ static const MemoryRegionOps integratorcm_ops = { static void integratorcm_init(Object *obj) { IntegratorCMState *s = INTEGRATOR_CM(obj); - SysBusDevice *dev = SYS_BUS_DEVICE(obj); s->cm_osc = 0x01000048; /* ??? What should the high bits of this value be? */ @@ -276,20 +275,28 @@ static void integratorcm_init(Object *obj) s->cm_init = 0x00000112; s->cm_refcnt_offset = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24, 1000); - memory_region_init_ram(&s->flash, obj, "integrator.flash", 0x100000, - &error_fatal); - memory_region_init_io(&s->iomem, obj, &integratorcm_ops, s, - "integratorcm", 0x00800000); - sysbus_init_mmio(dev, &s->iomem); - - integratorcm_do_remap(s); /* ??? Save/restore. */ } static void integratorcm_realize(DeviceState *d, Error **errp) { IntegratorCMState *s = INTEGRATOR_CM(d); + SysBusDevice *dev = SYS_BUS_DEVICE(d); + Error *local_err = NULL; + + memory_region_init_ram(&s->flash, (Object *)d, "integrator.flash", 0x100000, + &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + memory_region_init_io(&s->iomem, (Object *)d, &integratorcm_ops, s, + "integratorcm", 0x00800000); + sysbus_init_mmio(dev, &s->iomem); + + integratorcm_do_remap(s); if (s->memsz >= 256) { integrator_spd[31] = 64; -- 1.8.3.1