Roland McGrath writes: > I'd like to clean this up for powerpc too. If there is no way at all for > user-mode to set MSR_SE, then it doesn't much matter whether it shows up > when ptrace reads it--ptrace just needs to ignore attempts to set it. So > if there's no reason not to, what I would do is remove MSR_SE from the > MSR_DEBUGCHANGE mask and make sigreturn always clear MSR_SE.
OK, I found MSR_DEBUGCHANGE, it's in ptrace.c. :) So it only applies to attempts to change the MSR of a process using ptrace. So, what you want is just to disallow changing MSR via PTRACE_POKEUSR or equivalent, then? Paul. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
