From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 062654FDA51; Tue, 29 Sep 2026 16:28:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790699299; cv=none; b=WneRla1WGskF2MJ8N54HWt1IClWaDTPYWpZ6CFn+YYha7kqq/FaGmej2s1835rtcyO5GzHk4Ic7NDN6q25dMXFRFrZUPrHV2Nba9PXI1FKaqbXEy71OcHZ1NOb/adnbu10hWnUSSSj4Vh4UEbJzmq6jdZ5DrFlHnf3OBkBGua8g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790699299; c=relaxed/simple; bh=oRtOh33Fesqsuut+x1rNUXPIlp0nseB6LrUdXjuiRLw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=F8znGMuZURlA9SefhpZDSoEKcR5Tp731Iw8hirzbL3yBeOj/K0+3TQlXxsLxwt28s2F8ul8nVTmaxWOS0YgQKSqL7v8F2QdW2WrYuDrsJrTjjte1UO+f2iGlAP1LDXtHV3pRjBy4IB4Abn6QJi/GSOc+RBdLNIXLGpCmBfSeWDo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=fLQfaulU; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="fLQfaulU" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CB8EE1516; Tue, 29 Sep 2026 09:28:13 -0700 (PDT) Received: from J2N7QTR9R3.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8D13F3F85F; Tue, 29 Sep 2026 09:28:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1790699297; bh=oRtOh33Fesqsuut+x1rNUXPIlp0nseB6LrUdXjuiRLw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fLQfaulU0csNG4XSuuPMVX0sXYZcXQ+mm4Xg0cHYi6yvmJvMHlVlEqdR2aMMidlyN Hd3VWaDL5422G1rUM//uLmMXWjsmi1BShVtOUMM8kT37owJfBiv6NZ3fu3oLuFfZZw Zr+44rsBk4SoIczcvrlWBqY0pYjdtsi5lWOa+aZQ= Date: Tue, 29 Sep 2026 17:28:13 +0100 From: Mark Rutland To: Mark Brown Cc: Catalin Marinas , Will Deacon , Shuah Khan , Marc Zyngier , Oliver Upton , Fuad Tabba , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH 04/11] kselftest/arm64: Use exit_error() rather than SIGABRT in fp-stress Message-ID: References: <20260901-arm64-fp-stress-kvm-v1-0-31bce995b49b@kernel.org> <20260901-arm64-fp-stress-kvm-v1-4-31bce995b49b@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260901-arm64-fp-stress-kvm-v1-4-31bce995b49b@kernel.org> On Tue, Sep 01, 2026 at 06:06:44PM +0100, Mark Brown wrote: > The fp-stress test loads all deliver a SIGABRT to the process group to > report some errors they detect. There is no particular reason to use > this mechanism over exiting with an error code, the fp-stress harness does > not care. That's not quite true; sending a SIGABRT to the entire process group will kill the harness and other tests, resulting in lost output. I mentioned that in the patches I linked you to a while back: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=922d15ef46cb486a79f168949e103f6df26f4fba That aside, this is a good cleanup. Mark. > In order to facilitate running as KVM guests replace this with > use of the exit_error() function we added. > > Signed-off-by: Mark Brown > --- > tools/testing/selftests/arm64/fp/fpsimd-test.S | 10 ++-------- > tools/testing/selftests/arm64/fp/sve-test.S | 10 ++-------- > tools/testing/selftests/arm64/fp/za-test.S | 10 ++-------- > tools/testing/selftests/arm64/fp/zt-test.S | 8 +------- > 4 files changed, 7 insertions(+), 31 deletions(-) > > diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S > index 5ee8ef51ea4e..fcbb3a872490 100644 > --- a/tools/testing/selftests/arm64/fp/fpsimd-test.S > +++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S > @@ -176,7 +176,7 @@ function setsignal > cbz w0, 1f > > puts "sigaction failure\n" > - b .Labort > + b exit_error > > 1: ldr x30, [sp], #((sa_sz + 15) / 16 * 16 + 16) > ret > @@ -224,7 +224,7 @@ function _start > 1: puts "Bad vector length: " > mov x0, x19 > bl putdecn > - b .Labort > + b exit_error > > 2: puts "Vector length:\t" > mov x0, x19 > @@ -266,12 +266,6 @@ function _start > > add x22, x22, #1 > b .Ltest_loop > - > -.Labort: > - mov x0, #0 > - mov x1, #SIGABRT > - mov x8, #__NR_kill > - svc #0 > endfunction > > function barf > diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S > index 3447fe0e5554..26efdbdd88f9 100644 > --- a/tools/testing/selftests/arm64/fp/sve-test.S > +++ b/tools/testing/selftests/arm64/fp/sve-test.S > @@ -344,7 +344,7 @@ function setsignal > cbz w0, 1f > > puts "sigaction failure\n" > - b .Labort > + b exit_error > > 1: ldr x30, [sp], #((sa_sz + 15) / 16 * 16 + 16) > ret > @@ -397,7 +397,7 @@ function _start > 1: puts "Bad vector length: " > mov x0, x19 > bl putdecn > - b .Labort > + b exit_error > > 2: puts "Vector length:\t" > mov x0, x19 > @@ -474,12 +474,6 @@ function _start > > add x22, x22, #1 > b .Ltest_loop > - > -.Labort: > - mov x0, #0 > - mov x1, #SIGABRT > - mov x8, #__NR_kill > - svc #0 > endfunction > > function barf > diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S > index 33dc4ce8bfa1..7208bb2db9f1 100644 > --- a/tools/testing/selftests/arm64/fp/za-test.S > +++ b/tools/testing/selftests/arm64/fp/za-test.S > @@ -189,7 +189,7 @@ function setsignal > cbz w0, 1f > > puts "sigaction failure\n" > - b .Labort > + b exit_error > > 1: ldr x30, [sp], #((sa_sz + 15) / 16 * 16 + 16) > ret > @@ -240,7 +240,7 @@ function _start > 1: puts "bad vector length: " > mov x0, x19 > bl putdecn > - b .Labort > + b exit_error > > 2: puts "vector length:\t" > mov x0, x19 > @@ -288,12 +288,6 @@ function _start > > add x22, x22, #1 // Everything still working > b .Ltest_loop > - > -.Labort: > - mov x0, #0 > - mov x1, #SIGABRT > - mov x8, #__NR_kill > - svc #0 > endfunction > > function barf > diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/selftests/arm64/fp/zt-test.S > index c67242c2d5ab..c6cfbdeb2f0c 100644 > --- a/tools/testing/selftests/arm64/fp/zt-test.S > +++ b/tools/testing/selftests/arm64/fp/zt-test.S > @@ -158,7 +158,7 @@ function setsignal > cbz w0, 1f > > puts "sigaction failure\n" > - b .Labort > + b exit_error > > 1: ldr x30, [sp], #((sa_sz + 15) / 16 * 16 + 16) > ret > @@ -222,12 +222,6 @@ function _start > > add x22, x22, #1 // Everything still working > b .Ltest_loop > - > -.Labort: > - mov x0, #0 > - mov x1, #SIGABRT > - mov x8, #__NR_kill > - svc #0 > endfunction > > function barf > > -- > 2.47.3 >