linux-kernel - Re: [PATCH v2 0/2] x86/boot: fix relying on link order

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Message-Id: <20221207153000.2146772-1-alexandr.lobakin@intel.com>
Date:   Wed,  7 Dec 2022 16:30:00 +0100
From:   Alexander Lobakin <alexandr.lobakin@...el.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Alexander Lobakin <alexandr.lobakin@...el.com>, x86@...nel.org,
        Dave Hansen <dave.hansen@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Tony Luck <tony.luck@...el.com>,
        Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] x86/boot: fix relying on link order

From: Borislav Petkov <bp@...en8.de>
Date: Wed, 7 Dec 2022 16:24:00 +0100

> On Wed, Dec 07, 2022 at 04:08:54PM +0100, Alexander Lobakin wrote:
> > I was hoping it would hit one of the 6.1 RCs as a fix,
> 
> As a fix for which existing configuration which breaks if this fix is
> missing?

Ugh, fair enough :D Without it, FG-KASLR is broken, GCC-LTO is
broken, but none of them is in the mainline.
I recall there were some folks with LLD for which this $(head-y)
removal caused issues as well. But if they're quiet now, seems like
they don't hardly need it.
But not every fix is a fix only when it's easy to find a repro,
right...? But at least such are not urgent, you're correct here.

> 
> -- 
> Regards/Gruss,
>     Boris.
> 
> https://people.kernel.org/tglx/notes-about-netiquette

Thanks,
Olek