On Monday 11 February 2013 03:06 PM, Jonas Bonn wrote: > On 11 February 2013 08:26, Vineet Gupta <vineet.gup...@synopsys.com> wrote: > >> The only downside of this patch is that userspace signal stack grows in size, >> since signal frame only cares about scratch regs (pt_regs), but has to >> accommodate >> unused placeholder for callee regs too by virtue of using user_regs_struct. > Is this really true? Don't setcontext and friends require that _all_ > the registers be part of sigcontext?
But for an ABI - callee saved regs will anyhow be saved/restored even in setcontext case ! So collecting it for that purpose seems useless, or am I missing something here. -Vineet -- 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/
