linux-kernel - Re: [PATCH] selftests/powerpc: return skip code for spectre

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Message-Id: <159637523453.42190.2614653860464292630.b4-ty@ellerman.id.au>
Date:   Sun,  2 Aug 2020 23:34:59 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Thadeu Lima de Souza Cascardo <cascardo@...onical.com>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH] selftests/powerpc: return skip code for spectre_v2

On Tue, 28 Jul 2020 12:50:39 -0300, Thadeu Lima de Souza Cascardo wrote:
> When running under older versions of qemu of under newer versions with old
> machine types, some security features will not be reported to the guest.
> This will lead the guest OS to consider itself Vulnerable to spectre_v2.
> 
> So, spectre_v2 test fails in such cases when the host is mitigated and miss
> predictions cannot be detected as expected by the test.
> 
> [...]

Applied to powerpc/next.

[1/1] selftests/powerpc: Return skip code for spectre_v2
      https://git.kernel.org/powerpc/c/f3054ffd71b5afd44832b2207e6e90267e1cd2d1

cheers