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[174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c1396948dsm14351765ad.225.2024.10.05.08.25.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Oct 2024 08:25:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1728141954; x=1728746754; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Qpc+gtvz4QF2D7U7hwk6I/PwDTmOhNNc5A8A2G2CqV8=; b=b5bH8TzNryOOwnuIPccE5c3jXQcoTLmj3rhK301DiqYSSeqiN2hywFG/BtDwp2cXFz qQ88SomeL5d2m86/ddrR3T1paVASX8MWN+ATOdfYr9OC7+UBQ/T4rdVcdHBIP0MHO5Ld ZC3wBUHZ1VisVlKtKn02HbJ49qcfXy9pijUw+FOVBgg9PTlU5ri2taTePGH+UljZRWbE rTpqTcWJDBIXl/c6cFj/DRkVBi1BmoFLCxyEk3Q9SkLLEofbYyZgBQdGlqGHSuHKznXI jdGWipLdEI8UGiqx6LYR7tIWCqXhtBvU5P+hAJYUBYF7jz57sj48w6NIaC64iRjGLNBU EjsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728141954; x=1728746754; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Qpc+gtvz4QF2D7U7hwk6I/PwDTmOhNNc5A8A2G2CqV8=; b=v8o8cF3wzBNwtSe8as87X/Z1ju8X1VnZn7REqwlDFRe8hbmaFmpruPJcJBKeBJ4ZI+ P47QQRk8VceTQNQbvUJm3RNlQ6N8SYr9z9C6aV6Eg98/tL/f32JFDXbdqGytMZFTNoLo beeoPAVFuxrD81cLy07OuLPkJ+sHkbCj3qoFC1mJW3soX6dNGmazZ74P2VVjmmZpTYW5 XAlbUceLYzjeDE/ATnn5NxRCGavHhhn6zjImF4YY6dO0KUXh7zqaHwWKUv+ECjoPmcTe SgWVRJomncZpHpy9ksH4GdOQ25vKIA47RCqHQHwIkjFaCfuOGrwuLVIUMgLZfLqHQ4yD 2/CQ== X-Gm-Message-State: AOJu0YyijW5WyFzmFXV1C5bNwcjTKHpBLBMIJBx03URX/X8LS/v/aKP8 T789MubXKOTSZo9LPv4pO60QDhQbgH2JRhe8pnBHuYWMp82XbZHvtIxaJnEwcmq4s8roGeR+GrM S X-Google-Smtp-Source: AGHT+IELKa52UOR7Ytz4WC8NdW2qQ7qz0VWYMH9P15Fb5pfsJzTN9y4328hD9lJpQGFW7j/3iwlUjQ== X-Received: by 2002:a17:902:f68f:b0:20b:54cc:b34e with SMTP id d9443c01a7336-20bfee34d54mr84315875ad.51.1728141953851; Sat, 05 Oct 2024 08:25:53 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: deller@kernel.org, peter.maydell@linaro.org, alex.bennee@linaro.org, linux-parisc@vger.kernel.org, qemu-arm@nongnu.org Subject: [PATCH 01/20] accel/tcg: Assert noreturn from write-only page for atomics Date: Sat, 5 Oct 2024 08:25:32 -0700 Message-ID: <20241005152551.307923-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241005152551.307923-1-richard.henderson@linaro.org> References: <20241005152551.307923-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62d; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62d.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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1728142276223116600 Content-Type: text/plain; charset="utf-8" There should be no "just in case"; the page is already in the tlb, and known to be not readable. Signed-off-by: Richard Henderson --- accel/tcg/cputlb.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index 117b516739..fd6459b695 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -1852,10 +1852,9 @@ static void *atomic_mmu_lookup(CPUState *cpu, vaddr = addr, MemOpIdx oi, /* * Since we don't support reads and writes to different * addresses, and we do have the proper page loaded for - * write, this shouldn't ever return. But just in case, - * handle via stop-the-world. + * write, this shouldn't ever return. */ - goto stop_the_world; + g_assert_not_reached(); } /* Collect tlb flags for read. */ tlb_addr |=3D tlbe->addr_read; --=20 2.43.0