Messages in this thread | | | Date | Mon, 21 Jul 2008 08:18:44 -0700 (PDT) | Subject | Re: [PATCH 00/23] tracehook | From | David Miller <> |
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From: Roland McGrath <roland@redhat.com> Date: Mon, 21 Jul 2008 03:54:31 -0700 (PDT)
> > The other arch's with compat support will have this same exact issue. > > They don't seem to.
Look at S390 and PowerPC, they do the sign extension cases as well.
PowerPC does it with C level stubs, whereas I believe S390 uses a similar assembler stub scheme as sparc64.
But you are right, this is probably not an issue, and providing 32-bit truncated incoming args, and letting the tracer do whatever it likes for outgoing args, should work just fine.
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