Re: Invalid Opcode on ia32, Pistachio 0.4

Sebastian Reichelt <[email protected]>
Newsgroups gmane.comp.micro-kernel.l4.l4ka.general
Organization Uni Karlsruhe (TH)
Message-ID <[email protected]> 
> Your observation is correct.  The kernel will indeed enter kdebug upon
> invalid opcode exceptions.

In case the kernel debugger is not compiled in, won't enter_kdebug() return immediately? I believe you cannot enable it in (potential) production systems anyway because any user-level program can execute L4_KDB_Enter. I may be overlooking something, though.

By the way, the same issue exists with user-level code touching the kernel's region of the virtual address space.

-- 
Sebastian Reichelt
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