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Subject: Re: [PATCH 00/15] powerpc/watchpoint: Preparation for more than one
 watchpoint
To:     Christophe Leroy <christophe.leroy@c-s.fr>
Cc:     mpe@ellerman.id.au, mikey@neuling.org, apopple@linux.ibm.com,
        paulus@samba.org, npiggin@gmail.com,
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        mingo@kernel.org, linuxppc-dev@lists.ozlabs.org,
        linux-kernel@vger.kernel.org,
        Ravi Bangoria <ravi.bangoria@linux.ibm.com>
References: <20200309085806.155823-1-ravi.bangoria@linux.ibm.com>
 <b7148b91-e3db-d48a-7294-5c18fc801933@c-s.fr>
From:   Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Date:   Wed, 18 Mar 2020 18:22:28 +0530
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On 3/16/20 8:35 PM, Christophe Leroy wrote:
> 
> 
> Le 09/03/2020 à 09:57, Ravi Bangoria a écrit :
>> So far, powerpc Book3S code has been written with an assumption of only
>> one watchpoint. But future power architecture is introducing second
>> watchpoint register (DAWR). Even though this patchset does not enable
>> 2nd DAWR, it make the infrastructure ready so that enabling 2nd DAWR
>> should just be a matter of changing count.
> 
> Some book3s (e300 family for instance, I think G2 as well) already have a DABR2 in addition to DABR.
> Will this series allow to use it as well ?

I wasn't aware of that. I'll take a look at their specs and check if they
can piggyback on this series for 2nd DABR.

Thanks,
Ravi