Hi all!
Bruno Haible <br...@clisp.org> writes:
>> libsigsegv doesn't cope well with s390 at the moment. This is caused
>> by the fact, that linux masks the address for sigsegv:
>>
>> mm/fault.c:#define __FAIL_ADDR_MASK 0x7ffff000
>>
>> So the last 12 bit of information are lost.
>
> Thanks for the analysis. Indeed at least the 'sigsegv1' test will fail in this
> situation.
>
> Have you reported the problem to the linux-kernel mailing list, or to the
> maintainers of the s390 part of Linux?
>
>> Forcing libsigsegv to use
>> POSIX signal handlers othewise makes a library that passes all the tests
>> apart from the exact fault location.
>
> That sounds promising, if the kernel problem was fixed.
It seems the FAIL_ADDR_MASK is some handling for hardware
limitation? Is there some chance to get near a exact address for
segfault handlers or will we have to just live with the absence of this
facility on application level?
Regards
Christoph
--
9FED 5C6C E206 B70A 5857 70CA 9655 22B9 D49A E731
Debian Developer | Lisp Hacker | CaCert Assurer
A. Because it breaks the logical sequence of discussion
Q. Why is top posting bad?
_______________________________________________
pkg-common-lisp-devel mailing list
pkg-common-lisp-devel@lists.alioth.debian.org
http://lists.alioth.debian.org/mailman/listinfo/pkg-common-lisp-devel
