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Message-ID: <87imhslz22.fsf@mid.deneb.enyo.de>
Date: Wed, 22 Apr 2020 10:11:49 +0200
From: Florian Weimer <fw@...eb.enyo.de>
To: Nicholas Piggin <npiggin@...il.com>
Cc: Adhemerval Zanella <adhemerval.zanella@...aro.org>,  Rich Felker <dalias@...c.org>,  David Laight <David.Laight@...LAB.COM>,  "libc-alpha\@sourceware.org" <libc-alpha@...rceware.org>,  "libc-dev\@lists.llvm.org" <libc-dev@...ts.llvm.org>,  "linuxppc-dev\@lists.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,  musl@...ts.openwall.com,  Segher Boessenkool <segher@...nel.crashing.org>
Subject: Re: Re: Powerpc Linux 'scv' system call ABI proposal take 2

* Nicholas Piggin:

> So I would be disinclined to use SIGSYS unless there are no other better 
> signal types, and we don't want to use SIGILL for some good reason -- is 
> there a good reason to add complexity for userspace by differentiating 
> these two situations?

No, SIGILL seems fine to me.  scv 0 and scv 1 could well be considered
different instructions eventually (with different mnemonics).

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