linux-kernel - Re: [PATCH v15 03/15] selftests/powerpc: Add ptrace tests for EBB

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Date:   Fri, 07 Oct 2016 08:44:48 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     wei.guo.simon@...il.com, linuxppc-dev@...ts.ozlabs.org
Cc:     Shuah Khan <shuah@...nel.org>, Cyril Bur <cyrilbur@...il.com>,
        Chris Smart <chris@...troguy.com>,
        Suraj Jitindar Singh <sjitindarsingh@...il.com>,
        Michael Neuling <mikey@...ling.org>,
        Anshuman Khandual <khandual@...ux.vnet.ibm.com>,
        Simon Guo <wei.guo.simon@...il.com>,
        Jack Miller <jack@...ezen.org>,
        Rashmica Gupta <rashmicy@...il.com>,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v15 03/15] selftests/powerpc: Add ptrace tests for EBB

wei.guo.simon@...il.com writes:

> From: Anshuman Khandual <khandual@...ux.vnet.ibm.com>
>
> This patch adds ptrace interface test for EBB/PMU specific
> registers. This also adds some generic ptrace interface
> based helper functions to be used by other patches later
> on in the series.

This is consistently failing for me on a P8 Tuleta (pvr 004b 0201):

# ./ptrace-ebb 
test: ptrace_ebb_pmu
tags: git_version:v4.8-rc5-176-g89cf1de0ae90
EBBRR: 100059f8
EBBHR: 100053cc; expected: 100053cc
BESCR: 8000000100000000
SIAR:  100012d0
SDAR:  3fff7e4cc000
SIER:  3000000; expected: 2000000
MMCR2: 0; expected: 0
MMCR0: 180000080; expected: 180000080
failure: ptrace_ebb_pmu

cheers