On Fri, 19 May 2006, Andrew Morton wrote: > > > > FC1 is like really ancient. I think there was a glibc bug that caused > > vsyscall related init hangs like that. To nevertheless let people run > > their old stuff there's a vdso=0 boot option in exec-shield. > > > Well that patch took a machine from working to non-working. Pretty serious > stuff. We should get to the bottom of the problem so we can assess the > risk and impact, no? Yes. And it would be good to have a way to turn it off - either globally of by some per-process setup (eg off by default, but turn on when doing some magic). The per-process one would be the harder one, because it would require the fixmap entry, but not globally. So I suspect the only practical thing would be to have it be a kernel boot-time option. Linus
