linux-kernel - Re: [PATCH 14/15] powerpc/watchpoint/xmon: Don't allow breakpoint overwriting

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Message-ID: <79b77ffc-afac-b8ff-20d8-35a48860e526@c-s.fr>
Date:   Wed, 18 Mar 2020 14:31:18 +0100
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Cc:     mpe@...erman.id.au, mikey@...ling.org, apopple@...ux.ibm.com,
        paulus@...ba.org, npiggin@...il.com,
        naveen.n.rao@...ux.vnet.ibm.com, peterz@...radead.org,
        jolsa@...nel.org, oleg@...hat.com, fweisbec@...il.com,
        mingo@...nel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 14/15] powerpc/watchpoint/xmon: Don't allow breakpoint
 overwriting



Le 18/03/2020 à 13:37, Ravi Bangoria a écrit :
> 
> 
> On 3/17/20 4:40 PM, Christophe Leroy wrote:
>>
>>
>> Le 09/03/2020 à 09:58, Ravi Bangoria a écrit :
>>> Xmon allows overwriting breakpoints because it's supported by only
>>> one dawr. But with multiple dawrs, overwriting becomes ambiguous
>>> or unnecessary complicated. So let's not allow it.
>>
>> Could we drop this completely (I mean the functionnality, not the patch).
> 
> Not sure I follow. Isn't the same thing I'm doing?
> 

Yes, I think I misunderstood the patch. That seems ok.

Christophe