Re: Electric fence and valgrind

[Espen Skoglund]

[Marcus Brinkmann]
>> And if physmem had mapped it to wortel with no permissions?

> Well, mapping a page without any of rwx is bound to raise page
> access faults, isn't?  I don't think there is anything special about
> that.  As said before, sigma0 is not involved anymore.

Just a little clarification.  The PageInfo field in the KIP specifies
which page access rights can be set independently of the others.  If
rwx != 111 then the kernel/processor will implicitly permit read,
write or execute accesses on all mappings.  For example, in IA32 only
write permissions can be set independently, read and execute access is
implicit.

        eSk