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

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Message-ID: <20191024075116.48055961@why>
Date:   Thu, 24 Oct 2019 07:51:16 +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 Wed, 23 Oct 2019 18:30:19 -0700
Christoph Hellwig <hch@...radead.org> wrote:

> On Wed, Oct 23, 2019 at 03:07:10PM -0700, Palmer Dabbelt wrote:
> > > > +		/* 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/  
> > 
> > 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?

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