From patchwork Mon May 13 09:02:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Schwab X-Patchwork-Id: 1098735 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=none (p=none dis=none) header.from=suse.de 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 452Zr86LXvz9sNK for ; Mon, 13 May 2019 19:14:00 +1000 (AEST) Received: from localhost ([127.0.0.1]:53748 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hQ71y-00080a-R4 for incoming@patchwork.ozlabs.org; Mon, 13 May 2019 05:13:58 -0400 Received: from eggs.gnu.org ([209.51.188.92]:35215) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hQ6rJ-0001Gy-HV for qemu-devel@nongnu.org; Mon, 13 May 2019 05:02:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hQ6rI-0006ys-Cf for qemu-devel@nongnu.org; Mon, 13 May 2019 05:02:57 -0400 Received: from mx2.suse.de ([195.135.220.15]:38554 helo=mx1.suse.de) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hQ6rI-0006xU-6q for qemu-devel@nongnu.org; Mon, 13 May 2019 05:02:56 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 5F656AECD; Mon, 13 May 2019 09:02:54 +0000 (UTC) From: Andreas Schwab To: qemu-devel@nongnu.org X-Yow: HELLO KITTY gang terrorizes town, family STICKERED to death! Date: Mon, 13 May 2019 11:02:53 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] X-Received-From: 195.135.220.15 Subject: [Qemu-devel] [PATCH] linux-user: Implement membarrier syscall 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: Riku Voipio , Laurent Vivier Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Andreas Schwab Reviewed-by: Laurent Vivier --- linux-user/syscall.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index f5ff6f5dc8..80399f4eb0 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -313,6 +313,9 @@ _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type, unsigned long, idx1, unsigned long, idx2) #endif +#if defined(TARGET_NR_membarrier) && defined(__NR_membarrier) +_syscall2(int, membarrier, int, cmd, int, flags) +#endif static bitmask_transtbl fcntl_flags_tbl[] = { { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, @@ -11620,6 +11623,10 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, /* PowerPC specific. */ return do_swapcontext(cpu_env, arg1, arg2, arg3); #endif +#if defined TARGET_NR_membarrier && defined __NR_membarrier + case TARGET_NR_membarrier: + return get_errno(membarrier(arg1, arg2)); +#endif default: qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);