Re: [PATCH] x86: Silence 32bit compiler warning in intel_graphics_stolen()

[Joonas Lahtinen <joonas.lahtinen@linux.intel.com>]

On pe, 2016-05-06 at 13:57 +0300, Ville Syrjälä wrote:
> On Thu, May 05, 2016 at 05:15:17PM +0100, Chris Wilson wrote:
> > 
> > arch/x86/kernel/early-quirks.c: In function ‘intel_graphics_stolen’:
> > arch/x86/kernel/early-quirks.c:539:9: warning: format ‘%llx’ expects
> > argument of type ‘long long unsigned int’, but argument 2 has type ‘phys_addr_t’ [-Wformat=]
> >          "0x%llx-0x%llx\n", base, base + size - 1);
> >          ^
> > arch/x86/kernel/early-quirks.c:539:9: warning: format ‘%llx’ expects
> > argument of type ‘long long unsigned int’, but argument 3 has type ‘phys_addr_t’ [-Wformat=]
> This also makes the actual printk output crap. On my non-PAE machine
> I saw somehting resembling this:
> Reserving Intel graphics memory at 0x37ffffff3ffffffff-0x200000000
> 
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> > 
> > 
> > Fixes: ee0629cfd3c16 (drm/i915: Function per early graphics quirk)
> > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> > Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> > Cc: Mika Kuoppala <mika.kuoppala@intel.com>
> > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
> > Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Cc: Ingo Molnar <mingo@redhat.com>
> > Cc: "H. Peter Anvin" <hpa@zytor.com>
> > ---
> >  arch/x86/kernel/early-quirks.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
> > index d2f75b4..068ab3f 100644
> > --- a/arch/x86/kernel/early-quirks.c
> > +++ b/arch/x86/kernel/early-quirks.c
> > @@ -535,8 +535,8 @@ intel_graphics_stolen(int num, int slot, int func,
> >  	if (!size || !base)
> >  		return;
> >  
> > -	printk(KERN_INFO "Reserving Intel graphics stolen memory at "
> > -	       "0x%llx-0x%llx\n", base, base + size - 1);
> > +	printk(KERN_INFO "Reserving Intel graphics memory at 0x%llx-0x%llx\n",
> > +	       (long long)base, (long long)(base + size - 1));

Any reason not to make this %pa and %zx while at it?

	printk(KERN_INFO "Reserving Intel graphics memory at %pa (size 0x%zx)\n", &base, size);

Regards, Joonas

> >  
> >  	/* Mark this space as reserved */
> >  	e820_add_region(base, size, E820_RESERVED);
> > -- 
> > 2.8.1
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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