Re: [PATCH 2/2] x86_64,signal: Remove 'fs' and 'gs' from sigcontext
From: Andi Kleen
Date: Sat Jul 12 2014 - 14:38:04 EST
> This seems like it's asking for trouble. I think wxe'd have to
> separately save the selectors and the base registers to avoid breaking
> something, especially once wrgsbase, etc are enabled.
I agree, it would likely break existing code.
> Linus, for context, the other patch in this series saves and restores
> Without that, 64-bit sigreturn to a nondefault stack segment is
> basically impossible.
Why would you ever want to do that?
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/