linux-kernel - Re: [patch V4 04/15] entry: Provide generic interrupt entry/exit code

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Message-ID: <87sgdaa50x.fsf@nanos.tec.linutronix.de>
Date:   Wed, 29 Jul 2020 14:18:22 +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>,
        linux-arch <linux-arch@...r.kernel.org>,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Mark Rutland <mark.rutland@....com>,
        Kees Cook <keescook@...omium.org>,
        Keno Fischer <keno@...iacomputing.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        kvm list <kvm@...r.kernel.org>,
        Gabriel Krisman Bertazi <krisman@...labora.com>
Subject: Re: [patch V4 04/15] entry: Provide generic interrupt entry/exit code

Andy Lutomirski <luto@...nel.org> writes:
> On Tue, Jul 21, 2020 at 4:08 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>>
>> From: Thomas Gleixner <tglx@...utronix.de>
>>
>> Like the syscall entry/exit code interrupt/exception entry after the real
>> low level ASM bits should not be different accross architectures.
>>
>> Provide a generic version based on the x86 code.
>
> I don't like the name.  Sure, idtentry is ugly and x86-specific, but
> irq gives the wrong impression.  This is an entry path suitable for
> any entry that is guaranteed not to hit during entry/exit handling.
> Syscalls, page faults, etc are not "irqs".

Yeah, it's exceptions and interrupts, but I did not come up with a
better name so far.

Thanks,

        tglx