linux-kernel - Re: Linux 6.11-rc1

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Message-ID: <20240731082111.GAZqnz97mCll6rDyV-@fat_crate.local>
Date: Wed, 31 Jul 2024 10:21:11 +0200
From: Borislav Petkov <bp@...en8.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Guenter Roeck <linux@...ck-us.net>,
	Peter Zijlstra <peterz@...radead.org>, Jens Axboe <axboe@...nel.dk>,
	Andy Lutomirski <luto@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	Peter Anvin <hpa@...or.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	the arch/x86 maintainers <x86@...nel.org>
Subject: Re: Linux 6.11-rc1

On Tue, Jul 30, 2024 at 04:54:43PM -0700, Linus Torvalds wrote:
> You also seemed to say that it only happened with some CPU selections.
> Maybe there's something wrong with the ALTERNATIVE() cleanups - I'm
> looking at that new "nested alternatives macros" thing, and the odd
> games we play with the origin and replacement lengths etc.
> 
> That all looks entirely crazy. That file was hard to read before, now
> it's just incomprehensible to me.

I'm sorry to hear that. The reason we did it is because it was starting to
become really unwieldy to add a yet another alternative choice N in an
ALTERNATIVE_N call...

Anyway, I'll try to reproduce here. In the meantime, can anyone who can
reproduce - Guenter, Jens - boot that failing kernel with

  debug-alternative=-1

and copy dmesg and vmlinux somewhere for me?

It is a lot of output so make sure to catch it all.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette