linux-kernel - Re: [PATCH v4] Fix INT1 Recursion with unregistered breakpoints

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Date:	Sat, 19 Dec 2015 19:39:08 -0700
From:	Jeff Merkey <linux.mdb@...il.com>
To:	Mike Galbraith <umgwanakikbuti@...il.com>
Cc:	linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org, peterz@...radead.org,
	luto@...nel.org
Subject: Re: [PATCH v4] Fix INT1 Recursion with unregistered breakpoints

On 12/19/15, Jeff Merkey <linux.mdb@...il.com> wrote:
> On 12/19/15, Jeff Merkey <linux.mdb@...il.com> wrote:
>> On 12/19/15, Mike Galbraith <umgwanakikbuti@...il.com> wrote:
>>> On Sat, 2015-12-19 at 19:13 -0700, Jeff Merkey wrote:
>>>
>>>> @@ -519,6 +528,18 @@ static int hw_breakpoint_handler(struct die_args
>>>> *args)
>>>>  	    (dr6 & (~DR_TRAP_BITS)))
>>>>  		rc = NOTIFY_DONE;
>>>>
>>>> +	/*
>>>> +	* if we are about to signal to
>>>> +	* do_debug() to stop further processing
>>>> +	* and we have not ascertained the source
>>>> +	* of the breakpoint, log it as spurious.
>>>> +	*/
>>>
>>> Ahem...
>>>
>>>
>>>
>>
>> It matches the comments in the other section os code.  So what is
>> wrong with this.  The rest of the file uses the exact same comment
>> style.
>>
>> Please help me with this.
>>
>> Jeff
>>
>
> OK.  Somethings fritzed with how my emails are getting sent.  I just
> create this, tested it,
> and it applies PERFECTLY to my git clone.   Let me go back and try again.
>
> Throw this one away.  try try again.
>
> Jeff
>

I sent v4 and its appears to be right.

Jeff
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