From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0AFEEC433F5 for ; Mon, 14 Mar 2022 04:46:50 +0000 (UTC) Received: from localhost ([::1]:48026 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nTcbZ-00086t-78 for qemu-devel@archiver.kernel.org; Mon, 14 Mar 2022 00:46:49 -0400 Received: from eggs.gnu.org ([209.51.188.92]:50024) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nTcY3-0003DB-C3 for qemu-devel@nongnu.org; Mon, 14 Mar 2022 00:43:11 -0400 Received: from [2607:f8b0:4864:20::429] (port=45958 helo=mail-pf1-x429.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nTcY1-0004Of-FU for qemu-devel@nongnu.org; Mon, 14 Mar 2022 00:43:11 -0400 Received: by mail-pf1-x429.google.com with SMTP id s8so13201089pfk.12 for ; Sun, 13 Mar 2022 21:43:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=LFfrJYY5Ma0BjX1lYohp7IXb94eb73+HfKk9HI5l13k=; b=YrZ3jsnLM3czeMzWYH9P3kmmZtzf6Ix9noe7QgMtyHfKkYJ/paQEyfct/TcN1VBY0O m0i8/IA+lufPHLkYlQCxIM3VA0jVEHZApmJn+E03Yq2TRtiwDEkp9+0vVp3Um8lSoeCE JAvC+U7Yeu15t6FQH/4vz8LUEQ2vIftTeTbsooKzBqDNlY/UYSYOatOpMg6Ti3aN17Vi keNzegvIbJytmav8K9zcDBpjImQtSa4SJBmGWY7pH8fLBS0iTcMc4Jy3TRVCutwgxvw/ sobkF2YCkaE/IgrQ/dDOfXAC9ewN5EkxKvtjwPOuXo8mDVzqFBpa+nIZd41kzRkr00ot EAUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=LFfrJYY5Ma0BjX1lYohp7IXb94eb73+HfKk9HI5l13k=; b=AjORhAKAPHSrYRgGNAJ1sK8qwxYUGSi/qdfzFPj2meD8y+akF6l3Y4XEdgBujz7q8v GV6nu+bQDmytc/xdej0gm0y4kqqQsHrF8rEbl/3PeX8GIoXpoE9oSlMmhZwLqzziXqDV y5rjelhW1xHP7BuZahnOdOn+pOacCvzmrPDPjHGCju85zJo8fj8V38fouXEx1dvPQ1fB sgxT8re96NaIREoLsW6b4X4Em115+hfrZtrdbxVBXb9HjeeTAJSoUxhTRNQ33lz6eNs7 71C78IDUZ3cGazZGWmTebMcsRzcnDdEa+YoJiMgTTQw8iLMXH7B0xOEgIJ6gaeiHMcyP 6Nmw== X-Gm-Message-State: AOAM531UQS5nSIzvtQJJRkhN619OzYPbbgSqYm/u5RnK2STFfak3Wt8o qH10QfF7R9H5sLFuhlsP5IJNPLyOEdw18w== X-Google-Smtp-Source: ABdhPJyy4RPV/Y2zkFw2ZsNF4OUnTFm1o5Eiu7ezqnzzRAPLKonFqQKx1Dz8PsiwvzHsF+I8TdDHlA== X-Received: by 2002:a65:68d6:0:b0:380:7ef:30cf with SMTP id k22-20020a6568d6000000b0038007ef30cfmr18269455pgt.271.1647232988120; Sun, 13 Mar 2022 21:43:08 -0700 (PDT) Received: from localhost.localdomain (174-21-142-130.tukw.qwest.net. [174.21.142.130]) by smtp.gmail.com with ESMTPSA id l18-20020a056a00141200b004f75395b2cesm18258153pfu.150.2022.03.13.21.43.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Mar 2022 21:43:07 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 1/3] linux-user/arm: Implement __kernel_memory_barrier Date: Sun, 13 Mar 2022 21:43:03 -0700 Message-Id: <20220314044305.138794-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220314044305.138794-1-richard.henderson@linaro.org> References: <20220314044305.138794-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::429 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::429; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x429.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-arm@nongnu.org, laurent@vivier.eu Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This fallback syscall was stubbed out. It would only matter for emulating pre-armv6. Signed-off-by: Richard Henderson --- linux-user/arm/cpu_loop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/linux-user/arm/cpu_loop.c b/linux-user/arm/cpu_loop.c index 032e1ffddf..a0e43b261c 100644 --- a/linux-user/arm/cpu_loop.c +++ b/linux-user/arm/cpu_loop.c @@ -158,7 +158,7 @@ do_kernel_trap(CPUARMState *env) switch (env->regs[15]) { case 0xffff0fa0: /* __kernel_memory_barrier */ - /* ??? No-op. Will need to do better for SMP. */ + smp_mb(); break; case 0xffff0fc0: /* __kernel_cmpxchg */ /* XXX: This only works between threads, not between processes. -- 2.25.1