From patchwork Fri Jan 25 19:27:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 1031261 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 43mThY0Rr9z9sDB for ; Sat, 26 Jan 2019 06:33:17 +1100 (AEDT) Received: from localhost ([127.0.0.1]:49691 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gn7E3-00081n-1C for incoming@patchwork.ozlabs.org; Fri, 25 Jan 2019 14:33:15 -0500 Received: from eggs.gnu.org ([209.51.188.92]:38108) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gn7Ag-0006A3-JJ for qemu-devel@nongnu.org; Fri, 25 Jan 2019 14:29:50 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gn78c-0005aG-Ml for qemu-devel@nongnu.org; Fri, 25 Jan 2019 14:27:39 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33608) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gn78c-0005a1-HY for qemu-devel@nongnu.org; Fri, 25 Jan 2019 14:27:38 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B62DCC0AE079; Fri, 25 Jan 2019 19:27:37 +0000 (UTC) Received: from x1w.redhat.com (ovpn-204-46.brq.redhat.com [10.40.204.46]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 15C96600D6; Fri, 25 Jan 2019 19:27:32 +0000 (UTC) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org, Brad Smith , Kamil Rytarowski , Peter Maydell Date: Fri, 25 Jan 2019 20:27:17 +0100 Message-Id: <20190125192719.15339-2-philmd@redhat.com> In-Reply-To: <20190125192719.15339-1-philmd@redhat.com> References: <20190125192719.15339-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Fri, 25 Jan 2019 19:27:37 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/3] configure: Disable W^X on OpenBSD X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Thomas Huth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Li Qiang , Stefan Hajnoczi , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Alex_Benn=C3=A9e?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Since OpenBSD 6.0 [1], W^X is enforced by default [2]. TCG requires WX access. Disable W^X if it is available. This fixes: # lm32-softmmu/qemu-system-lm32 Could not allocate dynamic translator buffer # sysctl kern.wxabort=1 kern.wxabort: 0 -> 1 # lm32-softmmu/qemu-system-lm32 mmap: Not supported Abort trap (core dumped) # gdb -q lm32-softmmu/qemu-system-lm32 qemu-system-lm32.core (gdb) bt #0 0x000017e3c156c50a in _thread_sys___syscall () at {standard input}:5 #1 0x000017e3c15e5d7a in *_libc_mmap (addr=Variable "addr" is not available.) at /usr/src/lib/libc/sys/mmap.c:47 #2 0x000017e17d9abc8b in alloc_code_gen_buffer () at /usr/src/qemu/accel/tcg/translate-all.c:1064 #3 0x000017e17d9abd04 in code_gen_alloc (tb_size=0) at /usr/src/qemu/accel/tcg/translate-all.c:1112 #4 0x000017e17d9abe81 in tcg_exec_init (tb_size=0) at /usr/src/qemu/accel/tcg/translate-all.c:1149 #5 0x000017e17d9897e9 in tcg_init (ms=0x17e45e456800) at /usr/src/qemu/accel/tcg/tcg-all.c:66 #6 0x000017e17d9891b8 in accel_init_machine (acc=0x17e3c3f50800, ms=0x17e45e456800) at /usr/src/qemu/accel/accel.c:63 #7 0x000017e17d989312 in configure_accelerator (ms=0x17e45e456800, progname=0x7f7fffff07b0 "lm32-softmmu/qemu-system-lm32") at /usr/src/qemu/accel/accel.c:111 #8 0x000017e17d9d8616 in main (argc=1, argv=0x7f7fffff06b8, envp=0x7f7fffff06c8) at vl.c:4325 [1] https://www.openbsd.org/faq/upgrade60.html [2] https://undeadly.org/cgi?action=article&sid=20160527203200 Signed-off-by: Philippe Mathieu-Daudé --- configure | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/configure b/configure index b18281c61f..f6acc028a7 100755 --- a/configure +++ b/configure @@ -5795,6 +5795,17 @@ if test "$mingw32" = "yes" ; then done fi +# Disable W^X if available +if test "$tcg" = "yes" -a "$targetos" = "OpenBSD"; then + cat > $TMPC <