linux-kernel - Re: [patch V4 part 4 23/24] x86/entry: Provide IDTENTRY

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Message-ID: <87d075dyz3.fsf@nanos.tec.linutronix.de>
Date:   Fri, 15 May 2020 17:01:04 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Brian Gerst <brgerst@...il.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Will Deacon <will@...nel.org>
Subject: Re: [patch V4 part 4 23/24] x86/entry: Provide IDTENTRY_DF

Andy Lutomirski <luto@...nel.org> writes:
> On Tue, May 5, 2020 at 7:16 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>>
>> Provide a separate macro for #DF as this needs to emit paranoid only code
>> and has also a special ASM stub in 32bit.
>
> Acked-by: Andy Lutomirski <luto@...nel.org>
>
> but... maybe it would be cleaner just to open-code all of this in the
> next patch?  This is a lot of macro to do nothing at all.

Well, yes and no. The point is that we really want to have all idt
entries marked IDENTRY_ and have the prototypes including the XEN
variants generated.

Thanks,

        tglx