On Tue, Mar 06, 2007 at 12:03:26AM +0100, Blaisorblade wrote:
> > No, RCX corruption is different - that happens when a sysexit is done
> > from a system call where userspace wasn't prepared to save and restore
> > RCX. sigreturn is the best example.
>
> Hmm... we should finally fix that, at some point. Or... now that you explain
> it this way, it could even seem unfixable... is it? Or maybe sysreturn should
> become a syscall where the return must happen through the slow return path
> (iret), if that exists for x86_64.
This is fixed, and has been for a while. The fix was, as you suggest, return
through iret in this case.
> > But, a 32-bit UML making mmap calls through sysenter indeed does not run
> > very well.
>
> Has this been fixed? I've read that Chuck Ebbert had already fixed this in
> your diary, but not sent the patch.
Yup, and I'm going to resurrect that patch.
> I'd open an entry in bugzilla for this sort of things. It also seems that
> Jason Lunz's patch about max_low_pfn is not even in your tree
It is, I just haven't updated the site with it yet.
Jeff
--
Work email - jdike at linux dot intel dot com
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