From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52487) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bhk8L-0000ck-09 for qemu-devel@nongnu.org; Wed, 07 Sep 2016 17:11:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bhk8E-0002oG-UU for qemu-devel@nongnu.org; Wed, 07 Sep 2016 17:11:47 -0400 Received: from mail-yb0-x243.google.com ([2607:f8b0:4002:c09::243]:34969) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bhk8E-0002o9-Qh for qemu-devel@nongnu.org; Wed, 07 Sep 2016 17:11:42 -0400 Received: by mail-yb0-x243.google.com with SMTP id y64so502975yby.2 for ; Wed, 07 Sep 2016 14:11:42 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Wed, 7 Sep 2016 14:10:47 -0700 Message-Id: <1473282648-23487-18-git-send-email-rth@twiddle.net> In-Reply-To: <1473282648-23487-1-git-send-email-rth@twiddle.net> References: <1473282648-23487-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PULL 17/18] target-i386: Generate fences for x86 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, Pranith Kumar From: Pranith Kumar Signed-off-by: Pranith Kumar Message-Id: <20160714202026.9727-15-bobby.prani@gmail.com> Signed-off-by: Richard Henderson --- target-i386/translate.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target-i386/translate.c b/target-i386/translate.c index fa2ac48..9447557 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -8012,13 +8012,21 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, || (prefixes & PREFIX_LOCK)) { goto illegal_op; } + tcg_gen_mb(TCG_MO_ST_ST | TCG_BAR_SC); break; case 0xe8 ... 0xef: /* lfence */ + if (!(s->cpuid_features & CPUID_SSE) + || (prefixes & PREFIX_LOCK)) { + goto illegal_op; + } + tcg_gen_mb(TCG_MO_LD_LD | TCG_BAR_SC); + break; case 0xf0 ... 0xf7: /* mfence */ if (!(s->cpuid_features & CPUID_SSE2) || (prefixes & PREFIX_LOCK)) { goto illegal_op; } + tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC); break; default: -- 2.7.4