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

[Dave Hansen]

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.

Signed-off-by: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>
---

 linux-2.6.git-dave/arch/x86/kernel/kvm.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN arch/x86/kernel/kvm.c~fix-32-bit-compile-warning arch/x86/kernel/kvm.c
--- linux-2.6.git/arch/x86/kernel/kvm.c~fix-32-bit-compile-warning	2013-01-28 11:16:39.786938232 -0800
+++ linux-2.6.git-dave/arch/x86/kernel/kvm.c	2013-01-28 11:16:39.790938273 -0800
@@ -298,8 +298,8 @@ static void kvm_register_steal_time(void
 	memset(st, 0, sizeof(*st));
 
 	wrmsrl(MSR_KVM_STEAL_TIME, (slow_virt_to_phys(st) | KVM_MSR_ENABLED));
-	printk(KERN_INFO "kvm-stealtime: cpu %d, msr %lx\n",
-		cpu, slow_virt_to_phys(st));
+	printk(KERN_INFO "kvm-stealtime: cpu %d, msr %llx\n",
+		cpu, (unsigned long long)slow_virt_to_phys(st));
 }
 
 static DEFINE_PER_CPU(unsigned long, kvm_apic_eoi) = KVM_PV_EOI_DISABLED;
_

--
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/