linux-kernel - Re: [PATCH] irqchip: Skip contexts other supervisor in plic

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Date:   Thu, 24 Oct 2019 08:27:52 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        <alan.mikhak@...ive.com>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <tglx@...utronix.de>,
        <jason@...edaemon.net>
Subject: Re: [PATCH] irqchip: Skip contexts other supervisor in  plic_init()

On 2019-10-24 08:03, Christoph Hellwig wrote:
> On Thu, Oct 24, 2019 at 07:51:16AM +0100, Marc Zyngier wrote:
>> > > > Will this need to change for RISC-V M-mode Linux support?
>> > > >
>> > > > 
>> https://lore.kernel.org/linux-riscv/20191017173743.5430-1-hch@lst.de/
>> > >
>> > > Yes.
>> >
>> > For M-mode we'll want to check IRQ_M_EXT above.  So we should just
>> > merge this patch ASAP and then for my rebased M-mode series I'll
>> > fix the check to do that for the M-Mode case, which is much 
>> cleaner
>> > than my hack.
>>
>> Does this need to be taken as a fix, potentially Cc to stable? Or is
>> that 5.5 material?
>
> So I though that the S-mode context were kinda aways to be sorted 
> before
> M-mode, but I can't find anything guranteeing it.  So I think this
> actually is a fix, and getting this queued up in the next -rc would
> really help me with the nommu stuff - otherwise we'd need to take it
> through the riscv tree for 5.5 to avoid conflicts.
>
> Btw, here is my:
>
> Reviewed-by: Christoph Hellwig <hch@....de>
>
> for the patch.

Thanks for that.

Alan, if you can respin this patch with an updated commit message, I'll 
queue
it with a couple of other nits I have lying around, and send it to 
Thomas by
the end of the week.

         M.
-- 
Jazz is not dead. It just smells funny...