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X-Received-From: 2a00:1450:4864:20::435 Subject: [Qemu-devel] [PULL 18/25] 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: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Philippe Mathieu-Daud=C3=A9 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=3D1 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=3DVariable "addr" is not avai= lable.) 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=3D0) at /usr/src/qemu/a= ccel/tcg/translate-all.c:1112 #4 0x000017e17d9abe81 in tcg_exec_init (tb_size=3D0) at /usr/src/qemu/ac= cel/tcg/translate-all.c:1149 #5 0x000017e17d9897e9 in tcg_init (ms=3D0x17e45e456800) at /usr/src/qemu= /accel/tcg/tcg-all.c:66 #6 0x000017e17d9891b8 in accel_init_machine (acc=3D0x17e3c3f50800, ms=3D= 0x17e45e456800) at /usr/src/qemu/accel/accel.c:63 #7 0x000017e17d989312 in configure_accelerator (ms=3D0x17e45e456800, pro= gname=3D0x7f7fffff07b0 "lm32-softmmu/qemu-system-lm32") at /usr/src/qemu/ac= cel/accel.c:111 #8 0x000017e17d9d8616 in main (argc=3D1, argv=3D0x7f7fffff06b8, envp=3D0= x7f7fffff06c8) at vl.c:4325 [1] https://www.openbsd.org/faq/upgrade60.html [2] https://undeadly.org/cgi?action=3Darticle&sid=3D20160527203200 Signed-off-by: Philippe Mathieu-Daud=C3=83=C2=A9 Message-Id: <20190307142822.8531-3-philmd@redhat.com> Signed-off-by: Paolo Bonzini Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- configure | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/configure b/configure index c9a260c..62a2a49 100755 --- a/configure +++ b/configure @@ -5903,6 +5903,17 @@ if test "$mingw32" =3D "yes" ; then done fi =20 +# Disable OpenBSD W^X if available +if test "$tcg" =3D "yes" && test "$targetos" =3D "OpenBSD"; then + cat > $TMPC <