linux-kernel - Re: [PATCH v10 27/40] kselftest/arm64: Verify the GCS hwcap

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Message-ID: <87zfpodlci.fsf@linaro.org>
Date: Wed, 07 Aug 2024 19:22:37 -0300
From: Thiago Jung Bauermann <thiago.bauermann@...aro.org>
To: Mark Brown <broonie@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>,  Will Deacon
 <will@...nel.org>,  Jonathan Corbet <corbet@....net>,  Andrew Morton
 <akpm@...ux-foundation.org>,  Marc Zyngier <maz@...nel.org>,  Oliver Upton
 <oliver.upton@...ux.dev>,  James Morse <james.morse@....com>,  Suzuki K
 Poulose <suzuki.poulose@....com>,  Arnd Bergmann <arnd@...db.de>,  Oleg
 Nesterov <oleg@...hat.com>,  Eric Biederman <ebiederm@...ssion.com>,
  Shuah Khan <shuah@...nel.org>,  "Rick P. Edgecombe"
 <rick.p.edgecombe@...el.com>,  Deepak Gupta <debug@...osinc.com>,  Ard
 Biesheuvel <ardb@...nel.org>,  Szabolcs Nagy <Szabolcs.Nagy@....com>,
  Kees Cook <kees@...nel.org>,  "H.J. Lu" <hjl.tools@...il.com>,  Paul
 Walmsley <paul.walmsley@...ive.com>,  Palmer Dabbelt <palmer@...belt.com>,
  Albert Ou <aou@...s.berkeley.edu>,  Florian Weimer <fweimer@...hat.com>,
  Christian Brauner <brauner@...nel.org>,  Ross Burton
 <ross.burton@....com>,  linux-arm-kernel@...ts.infradead.org,
  linux-doc@...r.kernel.org,  kvmarm@...ts.linux.dev,
  linux-fsdevel@...r.kernel.org,  linux-arch@...r.kernel.org,
  linux-mm@...ck.org,  linux-kselftest@...r.kernel.org,
  linux-kernel@...r.kernel.org,  linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v10 27/40] kselftest/arm64: Verify the GCS hwcap

Hello,

Mark Brown <broonie@...nel.org> writes:

> Add coverage of the GCS hwcap to the hwcap selftest, using a read of
> GCSPR_EL0 to generate SIGILL without having to worry about enabling GCS.
>
> Reviewed-by: Thiago Jung Bauermann <thiago.bauermann@...aro.org>
> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---
>  tools/testing/selftests/arm64/abi/hwcap.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)

The hwcap test passes on my FVP setup:

Tested-by: Thiago Jung Bauermann <thiago.bauermann@...aro.org>

-- 
Thiago