linux-kernel - Re: [PATCH] GICv3: Fixing 32 bit compatibility

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Message-ID: <20140914055533.GK21986@titan.lakedaemon.net>
Date:	Sun, 14 Sep 2014 01:55:33 -0400
From:	Jason Cooper <jason@...edaemon.net>
To:	Marc Zyngier <marc.zyngier@....com>
Cc:	Robert Richter <rric@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Robert Richter <rrichter@...ium.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] GICv3: Fixing 32 bit compatibility

On Mon, Sep 08, 2014 at 03:24:12PM +0100, Marc Zyngier wrote:
> Hi Robert,
> 
> On 08/09/14 15:11, Robert Richter wrote:
> > From: Robert Richter <rrichter@...ium.com>
> > 
> > Fixing 32 bit compatibility by using ULL for u64 constants.
> > 
> > Signed-off-by: Robert Richter <rrichter@...ium.com>
> > ---
> >  drivers/irqchip/irq-gic-v3.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
> > index 57eaa5a0b1e3..9e13c87c7dfe 100644
> > --- a/drivers/irqchip/irq-gic-v3.c
> > +++ b/drivers/irqchip/irq-gic-v3.c
> > @@ -441,7 +441,7 @@ static u16 gic_compute_target_list(int *base_cpu, const struct cpumask *mask,
> >  
> >  		mpidr = cpu_logical_map(cpu);
> >  
> > -		if (cluster_id != (mpidr & ~0xffUL)) {
> > +		if (cluster_id != (mpidr & ~0xffULL)) {
> >  			cpu--;
> >  			goto out;
> >  		}
> > @@ -479,7 +479,7 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
> >  	smp_wmb();
> >  
> >  	for_each_cpu_mask(cpu, *mask) {
> > -		u64 cluster_id = cpu_logical_map(cpu) & ~0xffUL;
> > +		u64 cluster_id = cpu_logical_map(cpu) & ~0xffULL;
> >  		u16 tlist;
> >  
> >  		tlist = gic_compute_target_list(&cpu, mask, cluster_id);
> > 
> 
> Yeah, and there are many more. I'm currently sitting on a rather long
> queue of GICv3-related 32bit patches. I'll try to get that posted shortly.

I'll hold off until you post a complete series then.

thx,

Jason.
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