linux-kernel - Re: [PATCH v2 3/5] irqchip: RISC-V Local Interrupt Controller Driver

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Date:   Mon, 10 Sep 2018 06:39:02 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Anup Patel <anup@...infault.org>,
        Palmer Dabbelt <palmer@...ive.com>,
        linux-kernel@...r.kernel.org, Atish Patra <atish.patra@....com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Palmer Dabbelt <palmer@...belt.com>,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 3/5] irqchip: RISC-V Local Interrupt Controller Driver

On Mon, Sep 10, 2018 at 03:37:31PM +0200, Thomas Gleixner wrote:
> > > Just a few weeks ago you said the contrary:
> > > 
> > > http://lists.infradead.org/pipermail/linux-riscv/2018-August/000943.html
> > 
> > Sigh. Yes. Now that you remind me. 
> 
> Just for clarification. I had the impression that Anup was trying to wire
> up more than just the timer interrupt, but that doesn't seem to be the
> case.

He has an irqchip that is called from the RISC-V exception handler
when the interrupt flag is set in scause and then dispatches to one
of:  IPI, timer, actual irqchip.