On Sat, Sep 20, 2014 at 08:33:26PM +0200, Peter Zijlstra wrote: > On Sat, Sep 20, 2014 at 08:51:22PM +0400, Kirill Tkhai wrote: > > From: Kirill Tkhai <ktk...@parallels.com> > > > > We may pick a task which is in context_switch() on other cpu at the moment. > > Parallel using of a single stack by two processes is not a good idea. > > Please elaborate on who exactly that might happen. Its best to have > comprehensive changelogs for issues that fix races.
FWIW IIRC we can remove UNLOCKED_CTXSW from IA64 and I forgot if I audited MIPS, but I suspect we can (and should) remove it there too. That would make this exception go away and clean up some of this ugly. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
