Re: [PATCH] fix 32-bit compile warning from printk()

[Andrew Morton]

On Mon, 28 Jan 2013 11:19:39 -0800 Dave Hansen <dave@xxxxxxxxxxxxxxxxxx> wrote:

> My patch "Fix kvm's use of __pa() on percpu areas" introduced a
> compile warning:
> 
> arch/x86/kernel/kvm.c: In function 'kvm_register_steal_time':
> arch/x86/kernel/kvm.c:302:3: warning: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'phys_addr_t' [-Wformat]
> 
> According to: Documentation/printk-formats.txt
> 
> 	If <type> is dependent on a config option for its size
> 	(e.g., phys_addr_t) ... use a format specifier of its
> 	largest possible type and explicitly cast to it.
> 
> So, we'll do just that.  We will consider it an unsigned long
> long, and cast to it explicitly.

Please note that I have
http://ozlabs.org/~akpm/mmots/broken-out/lib-vsprintf-add-%25pa-format-specifier-for-phys_addr_t-types.patch
queued for 3.8.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/