From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54311) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1an1wI-0007zB-DL for qemu-devel@nongnu.org; Mon, 04 Apr 2016 06:40:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1an1wE-0004pw-Cd for qemu-devel@nongnu.org; Mon, 04 Apr 2016 06:40:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56352) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1an1wE-0004pm-7I for qemu-devel@nongnu.org; Mon, 04 Apr 2016 06:40:54 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B284D627E5 for ; Mon, 4 Apr 2016 10:40:53 +0000 (UTC) References: <20160401175819.GK2242@work-vm> From: Paolo Bonzini Message-ID: <570244B3.4070105@redhat.com> Date: Mon, 4 Apr 2016 12:40:51 +0200 MIME-Version: 1.0 In-Reply-To: <20160401175819.GK2242@work-vm> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] efi var store migration assert (bdrv_co_do_pwritev: Assertion `!(bs->open_flags & 0x0800)' failed.) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" , qemu-devel@nongnu.org Cc: jsnow@redhat.com On 01/04/2016 19:58, Dr. David Alan Gilbert wrote: > In the continuing journeys of trying to migrate a q35 guest with ovmf, > I've just hit this assert: > > qemu-system-x86_64: /root/git/qemu/block/io.c:1297: bdrv_co_do_pwritev: Assertion `!(bs->open_flags & 0x0800)' failed. > > This is just ahead of rc0 - 1458317c8ada834cf39287f6d11a8cb8a37360d6 from yesterday. Try this... Paolo diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index c475c2a..e96a7b0 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -46,6 +46,7 @@ #include "exec/address-spaces.h" #include "qemu/host-utils.h" #include "hw/sysbus.h" +#include "sysemu/sysemu.h" #define PFLASH_BUG(fmt, ...) \ do { \ @@ -97,6 +98,7 @@ struct pflash_t { MemoryRegion mem; char *name; void *storage; + VMChangeStateEntry *vmstate; }; static int pflash_post_load(void *opaque, int version_id); @@ -944,13 +946,24 @@ MemoryRegion *pflash_cfi01_get_memory(pflash_t *fl) return &fl->mem; } +static void postload_update_cb(void *opaque, int running, RunState state) +{ + pflash_t *pfl = opaque; + + /* This is called after bdrv_invalidate_cache_all. */ + qemu_del_vm_change_state_handler(pfl->vmstate); + pfl->vmstate = NULL; + + DPRINTF("%s: updating bdrv for %s\n", __func__, pfl->name); + pflash_update(pfl, 0, pfl->sector_len * pfl->nb_blocs); +} + static int pflash_post_load(void *opaque, int version_id) { pflash_t *pfl = opaque; if (!pfl->ro) { - DPRINTF("%s: updating bdrv for %s\n", __func__, pfl->name); - pflash_update(pfl, 0, pfl->sector_len * pfl->nb_blocs); + pfl->vmstate = qemu_add_vm_change_state_handler(postload_update_cb, pfl); } return 0; }