linux-kernel - Re: [PATCH] Kconfig: Explicitly disable asm goto w/ outputs on gcc-11 (and earlier)

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Message-ID: <Zcz2RKR-1uRaydKv@google.com>
Date: Wed, 14 Feb 2024 09:20:04 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Uros Bizjak <ubizjak@...il.com>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Jakub Jelinek <jakub@...hat.com>, "Andrew Pinski (QUIC)" <quic_apinski@...cinc.com>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Masahiro Yamada <masahiroy@...nel.org>, 
	Peter Zijlstra <peterz@...radead.org>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>
Subject: Re: [PATCH] Kconfig: Explicitly disable asm goto w/ outputs on gcc-11
 (and earlier)

On Mon, Feb 12, 2024, Sean Christopherson wrote:
> On Sun, Feb 11, 2024, Linus Torvalds wrote:
> > On Sun, 11 Feb 2024 at 03:12, Uros Bizjak <ubizjak@...il.com> wrote:
> > >
> > > I'd suggest the original poster to file a bug report in the GCC
> > > bugzilla. This way, the bug can be properly analysed and eventually
> > > fixed. The detailed instructions are available at
> > > https://gcc.gnu.org/bugs/
> > 
> > Yes, please. Sean?
> > 
> > In order to *not* confuse it with the "asm goto with output doesn't
> > imply volatile" bugs, could you make a bug report that talks purely
> > about the code generation issue that happens even with a manually
> > added volatile (your third code sequence in your original email)?
> 
> Will do.  Got a bug report ready, just waiting for a GCC Bugzilla account to be
> created for me so I can file it...

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921