linux-kernel - Re: [PATCH 0/2] Clean up x86

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Message-ID: <CAMzpN2j9h7FjpG_s_a09vKTCV+CYafjsKgK-k2RH7TG59FWz-w@mail.gmail.com>
Date:   Mon, 5 Oct 2020 19:10:39 -0400
From:   Brian Gerst <brgerst@...il.com>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     "the arch/x86 maintainers" <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "Christopherson, Sean J" <sean.j.christopherson@...el.com>
Subject: Re: [PATCH 0/2] Clean up x86_32 stackprotector

On Mon, Oct 5, 2020 at 3:30 PM Andy Lutomirski <luto@...nel.org> wrote:
>
> x86_32 stackprotector is a maintenance nightmare.  Clean it up.  This
> disables stackprotector on x86_32 on GCC 8.1 and on all clang
> versions -- I'll file a bug for the latter.

This should be doable on 64-bit too.  All that would need to be done
is to remove the zero-base of the percpu segment (which would simplify
alot of other code).

--
Brian Gerst