Linux current_stack_region()

[David Holmes - Sun Microsystems]

Filed: 6675312 Linux glibc stack guard-pages can overlap with hotspot 
guard pages

David

David Holmes - Sun Microsystems said the following on 14/03/08 09:57 AM:
> Gary,
> 
> Thanks for the bugzilla pointer - I've added my opinion there.
> 
> I will file a bug against hotspot so that we can track this.
> 
> David
> 
> Gary Benson said the following on 14/03/08 02:05 AM:
>> David Holmes - Sun Microsystems wrote:
>>> I'd argue that glibc is incorrect then.
>>
>> You'd not be the only one:
>> https://bugzilla.redhat.com/show_bug.cgi?id=435337
>>
>>> But that aside what are the implications for hotspot? Does it mean
>>> we're placing our guard pages on top of glibc's? (Fortunately this
>>> will only affect natively attached threads that happen to use glibc
>>> guards).
>>
>> In Java threads with guard pages (attached threads, basically)
>> HotSpot's red page will be in the same place as the glibc guard.
>> In non-Java threads there will be a guard page at the end of the
>> stack.
>>
>>> Thanks for clarifying my misreading regarding the rounding issue.
>>
>> Thanks for bringing it up.  Someone else had mentioned something
>> similar to me and I'd meant to check it but forgotten.
>>
>> Cheers,
>> Gary
>>