diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 6385ed5814b4..0d3c76a4208b 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -23,7 +23,7 @@
 #include "vgic-mmio.h"
 
 /* extract @num bytes at @offset bytes offset in data */
-unsigned long extract_bytes(unsigned long data, unsigned int offset,
+unsigned long extract_bytes(u64 data, unsigned int offset,
 			    unsigned int num)
 {
 	return (data >> (offset * 8)) & GENMASK_ULL(num * 8 - 1, 0);
diff --git a/virt/kvm/arm/vgic/vgic-mmio.h b/virt/kvm/arm/vgic/vgic-mmio.h
index 0b3ecf9d100e..80f92ceadef2 100644
--- a/virt/kvm/arm/vgic/vgic-mmio.h
+++ b/virt/kvm/arm/vgic/vgic-mmio.h
@@ -96,7 +96,7 @@ unsigned long vgic_data_mmio_bus_to_host(const void *val, unsigned int len);
 void vgic_data_host_to_mmio_bus(void *buf, unsigned int len,
 				unsigned long data);
 
-unsigned long extract_bytes(unsigned long data, unsigned int offset,
+unsigned long extract_bytes(u64 data, unsigned int offset,
 			    unsigned int num);
 
 u64 update_64bit_reg(u64 reg, unsigned int offset, unsigned int len,