linux-kernel - Re: [PATCH v7 1/4] x86/insn-eval: Add support for 64-bit kernel mode

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Message-ID: <20200102100125.GC8345@zn.tnic>
Date:   Thu, 2 Jan 2020 11:01:25 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Jann Horn <jannh@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Andy Lutomirski <luto@...nel.org>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Subject: Re: [PATCH v7 1/4] x86/insn-eval: Add support for 64-bit kernel mode

On Thu, Jan 02, 2020 at 12:49:46PM +0300, Kirill A. Shutemov wrote:
> Caller can indicate the bitness directly. It's always 32-bit for UMIP and
> get_seg_base_limit() can use insn->x86_64.

You can always send patches.

Just don't "fix" it for the sake of fixing it and the "cleanup" should
really be a cleanup not just converting it to something else. Oh, and
you need to test it too...

But you know all that. :-)

-- 
Regards/Gruss,
    Boris.

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