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Date: Thu, 10 Oct 2019 10:14:05 +0530
From: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
To: Christophe Leroy <christophe.leroy@....fr>
Cc: mpe@...erman.id.au, mikey@...ling.org, npiggin@...il.com,
benh@...nel.crashing.org, paulus@...ba.org,
naveen.n.rao@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
linux-kernel@...r.kernel.org,
Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Subject: Re: [PATCH v4 0/5] Powerpc/Watchpoint: Few important fixes
>> @Christophe, Is patch5 works for you on 8xx?
>>
>
> Getting the following :
>
> root@...ip:~# ./ptrace-hwbreak
> test: ptrace-hwbreak
> tags: git_version:v5.4-rc2-710-gf0082e173fe4-dirty
> PTRACE_SET_DEBUGREG, WO, len: 1: Ok
> PTRACE_SET_DEBUGREG, WO, len: 2: Ok
> PTRACE_SET_DEBUGREG, WO, len: 4: Ok
> PTRACE_SET_DEBUGREG, WO, len: 8: Ok
> PTRACE_SET_DEBUGREG, RO, len: 1: Ok
> PTRACE_SET_DEBUGREG, RO, len: 2: Ok
> PTRACE_SET_DEBUGREG, RO, len: 4: Ok
> PTRACE_SET_DEBUGREG, RO, len: 8: Ok
> PTRACE_SET_DEBUGREG, RW, len: 1: Ok
> PTRACE_SET_DEBUGREG, RW, len: 2: Ok
> PTRACE_SET_DEBUGREG, RW, len: 4: Ok
> PTRACE_SET_DEBUGREG, RW, len: 8: Ok
> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok
> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok
> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok
> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, WO, len: 6: Ok
> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RO, len: 6: Fail
> failure: ptrace-hwbreak
>
Thanks Christophe. I don't have any 8xx box. I checked qemu and it seems
qemu emulation for 8xx is not yet supported. So I can't debug this. Can
you please check why it's failing?
-Ravi
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