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[173.197.107.21]) by smtp.gmail.com with ESMTPSA id v6sm6516265pfi.31.2021.01.07.12.14.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Jan 2021 12:15:00 -0800 (PST) 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=xH5M81fqmCpdca/RUuW2bG6ZjrHw1rwqh2ryuVvV5yk=; b=nxaC4v5mmXyq6tRE8d5NwGy98JWw2mJ5gXYnsl6aw8PfFfJ9sTnDCkagqayhlrahWd tr9E5PC0HezJzGSlLNci45zpIDS85kkJqJ9pydYa+5Vj/HCn718NiP5Y8JLWlUqbZP2P i619tocgrpbqb3HcaUN3r+AoUwFHGM9Q0ae1JWFjiw3hzFs9xZ1SUcYFVOS1//ubc5Wq /6nSrTGSIrwAgKPOUQ66E6ess//xuZaRWL7BgxyfvUxXYCv1poNjW6AxECtH9vcgNsEh MI3NxEYzBrPOhZguE38J+IakWaxK1Hg+7SNrWqArvgkONABgW9QRR/nMP6fIF06qVrsE unJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xH5M81fqmCpdca/RUuW2bG6ZjrHw1rwqh2ryuVvV5yk=; b=a0KqTUkDqMkFZYoSsiD74jvz2I4ywVnXEUS2q3DXArCjP0XsfpaBVeKWf6NTfhJwHK Q3ffHw/YaRxXbiLGV+GB86CkHVJcVV0uTvi+9Q3qjhOUTWNGFXaG4bGItq0Mkbbw9Mz0 Ba0mFzzeX6SE+cvIaS7Wep1NUXSM5F++l1vhBp+EWrBFArIgeDMz2OC+eEhK3YmhD+za N6T8nGyZ/JfHYTW5YNIPm5EkDLYSbMmdlo/ka8XupKHkKgBgsXdvpMRHWqX92DOBwJ/f PPfy98blMAas6ihRkqS5daEmND8Ub7tEVw5wbV6wUe52DqbjK9/g1pmZ7GJVTOJ159Lr Pypg== X-Gm-Message-State: AOAM533m74tNyI7v2nChxzyFDv7a0hUgryZ9Ok3bmpeZ8RsMY4uqk+T2 aw9eGSf0duezD3qHOwIfN7z9tdqUctbiWw== X-Google-Smtp-Source: ABdhPJzckuSVnICGxXx+fZfW96mY5g9WXqy3eYmNX+JXoGJjUQRNV7s9bMBXKaOqhexfiDHiXwH1xw== X-Received: by 2002:a17:90a:b296:: with SMTP id c22mr195827pjr.142.1610050501369; Thu, 07 Jan 2021 12:15:01 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 05/47] util/oslib: Assert qemu_try_memalign() alignment is a power of 2 Date: Thu, 7 Jan 2021 10:14:06 -1000 Message-Id: <20210107201448.1152301-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210107201448.1152301-1-richard.henderson@linaro.org> References: <20210107201448.1152301-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::1031; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1031.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: peter.maydell@linaro.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) From: Philippe Mathieu-Daud=C3=A9 qemu_try_memalign() expects a power of 2 alignment: - posix_memalign(3): The address of the allocated memory will be a multiple of alignment, which must be a power of two and a multiple of sizeof(void *). - _aligned_malloc() The alignment value, which must be an integer power of 2. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20201021173803.2619054-3-philmd@redhat.com> Signed-off-by: Richard Henderson --- util/oslib-posix.c | 2 ++ util/oslib-win32.c | 1 + 2 files changed, 3 insertions(+) diff --git a/util/oslib-posix.c b/util/oslib-posix.c index f1e2801b11..359c52df12 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -201,6 +201,8 @@ void *qemu_try_memalign(size_t alignment, size_t size) =20 if (alignment < sizeof(void*)) { alignment =3D sizeof(void*); + } else { + g_assert(is_power_of_2(alignment)); } =20 #if defined(CONFIG_POSIX_MEMALIGN) diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 8adc651259..e6f83e10ed 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -58,6 +58,7 @@ void *qemu_try_memalign(size_t alignment, size_t size) void *ptr; =20 g_assert(size !=3D 0); + g_assert(is_power_of_2(alignment)); ptr =3D _aligned_malloc(alignment, size); trace_qemu_memalign(alignment, size, ptr); return ptr; --=20 2.25.1