Re: pt_regs leak into userspace (was Re: [PATCH v3 20/71] ARC: Signal handling)

[Jonas Bonn]

On 11 February 2013 08:26, Vineet Gupta <Vineet.Gupta1@xxxxxxxxxxxx> 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?

/Jonas
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