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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F815C433F5 for ; Wed, 13 Oct 2021 02:54:58 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A50A160EB4 for ; Wed, 13 Oct 2021 02:54:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A50A160EB4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:42180 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1maUPw-0007eo-LT for qemu-devel@archiver.kernel.org; Tue, 12 Oct 2021 22:54:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56824) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1maUHk-0004eR-HE for qemu-devel@nongnu.org; Tue, 12 Oct 2021 22:46:28 -0400 Received: from mail-pf1-x42d.google.com ([2607:f8b0:4864:20::42d]:40705) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1maUHi-0004uy-Ow for qemu-devel@nongnu.org; Tue, 12 Oct 2021 22:46:28 -0400 Received: by mail-pf1-x42d.google.com with SMTP id o133so1147657pfg.7 for ; Tue, 12 Oct 2021 19:46:26 -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=te2kf7hHJE1D45OuAMtE7bn/toedNLWAWMCQPiNKbOQ=; b=vCMCfN2KQG7/hmOP9Hlf0qxSJHIKTywetAlsuCgeqYsEXqoxyZg2WwuMf9aPSjfYpt 4FgIDAtKrOTtEIlkXKacAp+On76Mz2NFEn3HfsQ+c5U/a6qeX8/u4IbX+lqh89/SrxO/ aijrTAHWC/qePlqpu7qZPTlSJRcxoQVDoNxIBmdUpAz1m+GkekrsJwUmLbEqBeMg06Gh 7NZ0QgG/V642YeWscHyIjEcCT3npsXU1wPAzX0en3vvwUA0g2ZwRAXvnIKjtFO4YNlC6 oAfk0drt08VGUzzDzBztUDAyZX5GtaC4ICLURsniwbpuCJWKmATIXILCBYyi5GEhkYmZ /sCg== 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=te2kf7hHJE1D45OuAMtE7bn/toedNLWAWMCQPiNKbOQ=; b=5VnwY9cPxpABqezzkQwSuKAYJIDIp73+yVSVOZCeNfAo7T4CjOj62ie++2ILGkv4lC 8+fVbAZ0S46VhuTMT/0a91ZB6FMCNdyXzBk1h/k/WhqqFbd9fPNd4Gw1UYIex8erDPnO b0ShJrDNLtyV42RztizSxWUIiRuUcEXrMePslE3rLAPtO7Zjm7DgS6JpK1XesXPAe+vU Ss1f7a8/GticckTNPYBYr09q2Jr29ErVTEhY2ifzZR7c9vR/WlrDo1O5WDrx9NLDqBql LMUzUt2qpWJe0aLeHFSihw27Ja9enDj674Xp0eQASIBQsdRP6weOhxBzKrjqI2FQnuMn xqzw== X-Gm-Message-State: AOAM532ltcIGoXEkc6vFv4/43EdAl0IKkXxhQ6ahSL88HxPzBc6T3Yot F2T1SO0gYEn3ZcGe0XMM8Zwp01HdNkU= X-Google-Smtp-Source: ABdhPJxZfbBqNoK8QJa7NYVIVfvBf+twcfpZBEo4pKasRZlK/bvtPzM42R9kHPJi3h31Uib8GLyeFw== X-Received: by 2002:a62:33c2:0:b0:44d:ab9:2e92 with SMTP id z185-20020a6233c2000000b0044d0ab92e92mr18541758pfz.10.1634093185387; Tue, 12 Oct 2021 19:46:25 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id qe17sm4855014pjb.39.2021.10.12.19.46.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Oct 2021 19:46:24 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v4 16/48] accel/tcg: Report unaligned atomics for user-only Date: Tue, 12 Oct 2021 19:45:35 -0700 Message-Id: <20211013024607.731881-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211013024607.731881-1-richard.henderson@linaro.org> References: <20211013024607.731881-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::42d; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Use the new cpu_loop_exit_sigbus for atomic_mmu_lookup, which has access to complete alignment info from the TCGMemOpIdx arg. Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- accel/tcg/user-exec.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index 83ed76cef9..5dcd58c6d5 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -547,11 +547,22 @@ static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr, MemOpIdx oi, int size, int prot, uintptr_t retaddr) { + MemOp mop = get_memop(oi); + int a_bits = get_alignment_bits(mop); + void *ret; + + /* Enforce guest required alignment. */ + if (unlikely(addr & ((1 << a_bits) - 1))) { + MMUAccessType t = prot == PAGE_READ ? MMU_DATA_LOAD : MMU_DATA_STORE; + cpu_loop_exit_sigbus(env_cpu(env), addr, t, retaddr); + } + /* Enforce qemu required alignment. */ if (unlikely(addr & (size - 1))) { cpu_loop_exit_atomic(env_cpu(env), retaddr); } - void *ret = g2h(env_cpu(env), addr); + + ret = g2h(env_cpu(env), addr); set_helper_retaddr(retaddr); return ret; } -- 2.25.1