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Subject: Re: [PATCH v2 1/3] powerpc/pseries: Parse control memory access error
To: Segher Boessenkool <segher@kernel.crashing.org>,
 Michael Ellerman <mpe@ellerman.id.au>
References: <20210805092025.272871-1-ganeshgr@linux.ibm.com>
 <87eeajcpmq.fsf@mpe.ellerman.id.au> <20210824212420.GL1583@gate.crashing.org>
From: Ganesh <ganeshgr@linux.ibm.com>
Message-ID: <92790955-ce8d-1826-2317-c889038545fc@linux.ibm.com>
Date: Wed, 25 Aug 2021 17:06:29 +0530
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On 8/25/21 2:54 AM, Segher Boessenkool wrote:
> On Tue, Aug 24, 2021 at 04:39:57PM +1000, Michael Ellerman wrote:
>>> +		case MC_ERROR_CTRL_MEM_ACCESS_PTABLE_WALK:
>>> +			mce_err.u.ra_error_type =
>>> +				MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN;
>> That name is ridiculously long, but I guess that's not your fault :)
>> We can fix it up in a later patch.
> It also has surprisingly little information content for the 47 chars
> length it has :-)  What does this even mean?!

It means control memory access error/real address error is detected during page
table walk.

>
> Segher

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    <p><br>
    </p>
    <div class="moz-cite-prefix">On 8/25/21 2:54 AM, Segher Boessenkool
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:20210824212420.GL1583@gate.crashing.org">
      <pre class="moz-quote-pre" wrap="">On Tue, Aug 24, 2021 at 04:39:57PM +1000, Michael Ellerman wrote:
</pre>
      <blockquote type="cite">
        <blockquote type="cite">
          <pre class="moz-quote-pre" wrap="">+		case MC_ERROR_CTRL_MEM_ACCESS_PTABLE_WALK:
+			mce_err.u.ra_error_type =
+				MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN;
</pre>
        </blockquote>
        <pre class="moz-quote-pre" wrap="">
That name is ridiculously long, but I guess that's not your fault :)
We can fix it up in a later patch.
</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">
It also has surprisingly little information content for the 47 chars
length it has :-)  What does this even mean?!</pre>
    </blockquote>
    <pre>It means control memory access error/real address error is detected during page
table walk. 
</pre>
    <blockquote type="cite"
      cite="mid:20210824212420.GL1583@gate.crashing.org">
      <pre class="moz-quote-pre" wrap="">

Segher
</pre>
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