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Date: Tue, 29 Jan 2013 02:55:47 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Dave Hansen <dave@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com> Subject: Re: [PATCH] fix 32-bit compile warning from printk() On Tue, 29 Jan 2013 02:54:28 -0800 Andrew Morton <akpm@...ux-foundation.org> wrote: > On Mon, 28 Jan 2013 11:19:39 -0800 Dave Hansen <dave@...ux.vnet.ibm.com> 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. > err, I meant 3.9. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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