From: Paul Walmsley <paul.walmsley@sifive.com>
To: Alan Mikhak <alan.mikhak@sifive.com>
Cc: jason@lakedaemon.net, maz@kernel.org, palmer@sifive.com,
linux-kernel@vger.kernel.org, hch@infradead.org,
linux-riscv@lists.infradead.org, tglx@linutronix.de
Subject: Re: [PATCH] irqchip: Skip contexts other supervisor in plic_init()
Date: Wed, 23 Oct 2019 11:54:54 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.9999.1910231152580.16536@viisi.sifive.com> (raw)
In-Reply-To: <1571847755-20388-1-git-send-email-alan.mikhak@sifive.com>
+ hch
On Wed, 23 Oct 2019, Alan Mikhak wrote:
> From: Alan Mikhak <alan.mikhak@sifive.com>
>
> Modify plic_init() to skip .dts interrupt contexts other
> than supervisor external interrupt.
Might be good to explain the motivation here.
>
> Signed-off-by: Alan Mikhak <alan.mikhak@sifive.com>
> ---
> drivers/irqchip/irq-sifive-plic.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c
> index c72c036aea76..5f2a773d5669 100644
> --- a/drivers/irqchip/irq-sifive-plic.c
> +++ b/drivers/irqchip/irq-sifive-plic.c
> @@ -251,8 +251,8 @@ static int __init plic_init(struct device_node *node,
> continue;
> }
>
> - /* skip context holes */
> - if (parent.args[0] == -1)
> + /* skip contexts other than supervisor external interrupt */
> + if (parent.args[0] != IRQ_S_EXT)
> continue;
Will this need to change for RISC-V M-mode Linux support?
https://lore.kernel.org/linux-riscv/20191017173743.5430-1-hch@lst.de/
- Paul
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next prev parent reply other threads:[~2019-10-23 18:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-23 16:22 [PATCH] irqchip: Skip contexts other supervisor in plic_init() Alan Mikhak
2019-10-23 18:54 ` Paul Walmsley [this message]
2019-10-23 21:34 ` Alan Mikhak
2019-10-24 2:21 ` Paul Walmsley
2019-10-23 22:07 ` Palmer Dabbelt
2019-10-24 1:30 ` Christoph Hellwig
2019-10-24 6:51 ` Marc Zyngier
2019-10-24 7:03 ` Christoph Hellwig
2019-10-24 7:27 ` Marc Zyngier
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