Re: [PATCH v2] Fix INT1 Exception with unregistered breakpoints

[Jeff Merkey]

On 12/14/15, Jeff Merkey <linux.mdb@xxxxxxxxx> wrote:
> Please consider the attached patch.
>
> SUMMARY
>
> This patch corrects a hard lockup failure of the system kernel if the
> operating system receives a breakpoint exception at a code execution
> address which was not registered with the operating system.  The patch
> allows kernel debuggers, application profiling and performance modules,
> and external debugging tools to work better together at sharing the
> breakpoint registers on the platform in a way that they do not cause
> errors and system faults, and enables the full feature set in the
> breakpoint API.  If a kernel application triggers a breakpoint
> or programs one in error, this patch will catch the condition and report
> it to the system log without the operating system experiencing a system
> fault.  There are several consumers of the Linux Breakpoint API and all
> of them can and sometimes do cause the condition this patch corrects.
>

Peter,

Is that the type of summary that meets the standards.  I tried to be concise.

Jeff
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