On Fri, Feb 12, 2010 at 08:21:33AM -0800, Linus Torvalds wrote: > Hmm. All other architectures either pass in zero, or test TIF_SINGLESTEP. > > I guess TIF_BLOCKSTEP is a parisc addition, so now parisc matches x86 and > power etc, but it still makes me wonder about all those other > architectures that pass in zero. > Yeah, BLOCKSTEP is the branch tracing bit (traps on a taken branch.) > For the curious, that seems to be at least sparc and 64-bit (but not > 32-bit) sh. > Mike sent an email to them reporting this as well, David points out that sparc has no hw singlestepping, so 0 is appropriate there. SH does seem to have a legitimate bug. regards, Kyle -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
