From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="ZcidFv8J" Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D67F698 for ; Tue, 12 Dec 2023 18:45:09 -0800 (PST) Received: by mail-pf1-x42b.google.com with SMTP id d2e1a72fcca58-6ceba6c4b8dso5230558b3a.1 for ; Tue, 12 Dec 2023 18:45:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1702435509; x=1703040309; darn=vger.kernel.org; h=mime-version:message-id:date:in-reply-to:subject:cc:to:from :user-agent:references:from:to:cc:subject:date:message-id:reply-to; bh=CJ7qwCmvq20mGgi3dRymJGPN14h9pbhwL4VM2txPZCM=; b=ZcidFv8JCRaEhFx285fX5LJKtnAW/6xdQ+f7UfXQ943HmZyW9UeCMTAYCaHECv8vLb URWXgHbvPOMeXQuHw0S2vjSjHuBlCXvquyzPVXx4sAqi1JBubDTEmBqHBx1KrJeEMFSr 062t+bhgVI5fKT3UeJt5TWjN/EyiUIycC4uMBVg7+ZpGfANAqH9sq327mW42WX36tCBA EmOhUf9rvG1Eo7TCMc5XNLm9Olzb5gcmAmGaze1GIY+DTTPP25On2mTimeGQpBImvEr/ eUYhQKfZ/0EQF0sRexHfXempTf+gySR6FEDkr6mkUt0DHZ4wXN6L7dp0zbLaL0qsZsT+ vaEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702435509; x=1703040309; h=mime-version:message-id:date:in-reply-to:subject:cc:to:from :user-agent:references:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=CJ7qwCmvq20mGgi3dRymJGPN14h9pbhwL4VM2txPZCM=; b=YEQ1XjR21M1UZIOe2+jvkqR6Sn8oOtjKqnBPBll+75QgJFIHboiwDATuXrmgkzQKEr Fl/3aLf8YF+FR8F2ZMLMdVI3nFLM4eVJiuSLulA719QstL5Y+bpwuwDTkVp2CFDscPDt 18mrLWkrL0bwIlRrPbliXX1ouO1/dHQNpJC9t3M4bW+pZWfxVe/XvLlKbZw+Ah7MWJdh 8KqJXnjgo8PqsL+9T1A1I0Z+64TGffKYyY5AabuVO73SNSdwPWlwroltlMMZgBIYuww+ RsHRUdIKaSAf4eq+Pd4nzbn2w/CONd0B4vD0xLyFnu6wyKKg7xnwlT5yFF2WvptvVrPZ ZFEw== X-Gm-Message-State: AOJu0YzzAYUvn+T1iqmtJRXRkH4zFumHTJhZLvB0ZD2MajH2+4VtL426 s2oZ6DbUPSB+t9mbLBAE7lZKTA== X-Google-Smtp-Source: AGHT+IGi//6HE3KINOZpirefGAX+e3jIHwZFWzUp/AR1xA1scaFysKSWvBw9/QjFkCNOqGCFGdEidA== X-Received: by 2002:a05:6a00:c81:b0:6cb:a2f4:8579 with SMTP id a1-20020a056a000c8100b006cba2f48579mr8585102pfv.15.1702435509333; Tue, 12 Dec 2023 18:45:09 -0800 (PST) Received: from localhost ([2804:14d:7e39:8470:cddd:ffc9:f19e:a4dc]) by smtp.gmail.com with ESMTPSA id y72-20020a62ce4b000000b006cb7bdbc3besm9528817pfg.17.2023.12.12.18.45.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Dec 2023 18:45:08 -0800 (PST) References: <20231122-arm64-gcs-v7-0-201c483bd775@kernel.org> <20231122-arm64-gcs-v7-37-201c483bd775@kernel.org> User-agent: mu4e 1.10.8; emacs 29.1 From: Thiago Jung Bauermann To: Mark Brown Cc: Catalin Marinas , Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Kees Cook , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH v7 37/39] kselftest/arm64: Add a GCS stress test In-reply-to: <20231122-arm64-gcs-v7-37-201c483bd775@kernel.org> Date: Tue, 12 Dec 2023 23:45:06 -0300 Message-ID: <87zfyex1l9.fsf@linaro.org> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain I'm going a bit out-of-order to report a build failure in a test: Mark Brown writes: > +// Recurse x20 times > +.macro recurse id I get an assembler error here: gcc -nostdlib gcs-stress-thread.S -o /home/thiago.bauermann/src/linux/tools/testing/selftests/arm64/gcs/gcs-stress-thread gcs-stress-thread.S: Assembler messages: gcs-stress-thread.S:236: Error: unexpected end of file in macro `recurse' definition make[2]: *** [Makefile:24: /home/thiago.bauermann/src/linux/tools/testing/selftests/arm64/gcs/gcs-stress-thread] Error 1 This is with gas from Ubuntu 22.04, which ships binutils 2.38. > +function recurse\id > + stp x29, x30, [sp, #-16]! > + mov x29, sp > + > + cmp x20, 0 > + beq 1f > + sub x20, x20, 1 > + bl recurse\id > + > +1: > + ldp x29, x30, [sp], #16 > + > + // Do a syscall immediately prior to returning to try to provoke > + // scheduling and migration at a point where coherency issues > + // might trigger. > + mov x8, #__NR_getpid > + svc #0 > + > + ret > +endfunction > +.endmacro > + > +// Generate and use two copies so we're changing the GCS contents > +recurse 1 > +recurse 2 -- Thiago