linux-kernel - Re: [PATCH] x86/boot: Remove x86

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Message-ID: <Y4XDlWc+2OvmW7kS@zn.tnic>
Date:   Tue, 29 Nov 2022 09:32:21 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Brian Gerst <brgerst@...il.com>
Cc:     Uros Bizjak <ubizjak@...il.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] x86/boot: Remove x86_32 PIC using ebx workaround

On Mon, Nov 28, 2022 at 10:41:11PM -0500, Brian Gerst wrote:
> x86-64 uses a PIC register for the medium and large PIC code models,
> where offsets can be larger than +/- 2GB.

Right but 64-bit is built with -mcmodel=kernel which obviously generates
rip-relative.

-- 
Regards/Gruss,
    Boris.

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