linux-kernel - Re: [PATCH v3 6/8] x86-32: Enable syscall wrappers

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Message-ID: <CALCETrW=R-tanwBwX9vCsnUiRdHooPq59uDVRBfwiOpC0MzRYQ@mail.gmail.com>
Date:   Fri, 28 Feb 2020 11:00:52 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Brian Gerst <brgerst@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: [PATCH v3 6/8] x86-32: Enable syscall wrappers

On Thu, Feb 27, 2020 at 5:28 AM Brian Gerst <brgerst@...il.com> wrote:
>
> Enable pt_regs based syscalls for 32-bit.  This makes the 32-bit native
> kernel consistent with the 64-bit kernel, and improves the syscall
> interface by not needing to push all 6 potential arguments onto the stack.

Was the change to the table mechanically generated or mechanically
verified?  If so, how?

After this goes in, I should dust off my code to get rid of all the
__abi crud in the tables.  I never quite got it working well enough,
but your series should help.

--Andy