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Date:   Tue, 17 Mar 2020 15:49:42 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Jakub Jelinek <jakub@redhat.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Sergei Trofimovich <slyfox@gentoo.org>,
        linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Andy Lutomirski <luto@kernel.org>, x86@kernel.org,
        Michael Matz <matz@suse.de>
Subject: Re: [PATCH] x86: fix early boot crash on gcc-10
Message-ID: <20200317144942.GE15609@zn.tnic>
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On Tue, Mar 17, 2020 at 03:39:14PM +0100, Jakub Jelinek wrote:
> That is because the option is called -fno-stack-protector, so one needs to
> use __attribute__((optimize("no-stack-protector")))

Ha, that works even! :-)

And my guest boots.

I guess we can do that then. Looks like the optimal solution to me.

Also, I'm assuming older gccs will simply ignore unknown optimize
options?

Thx.

-- 
Regards/Gruss,
    Boris.

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