--- a/arch/sparc/mm/init.c
+++ b/arch/sparc/mm/init.c
@@ -206,9 +206,13 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* Now have to check initial ramdisk, so that bootmap does not overwrite it */
 	if (sparc_ramdisk_image) {
-		sparc_ramdisk_image -= KERNBASE;
+printk("sparc_ramdisk_image = %x, &_end = %p, phys_base = %lx, sparc_ramdisk_size = %u\n", 
+sparc_ramdisk_image, &_end, phys_base, sparc_ramdisk_size);
+		if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
+			sparc_ramdisk_image -= KERNBASE;
 		initrd_start = sparc_ramdisk_image + phys_base;
 		initrd_end = initrd_start + sparc_ramdisk_size;
+printk("initrd_start = %lx, initrd_end = %lx\n", initrd_start, initrd_end);
 		if (initrd_end > end_of_phys_memory) {
 			printk(KERN_CRIT "initrd extends beyond end of memory "
 		                 	 "(0x%016lx > 0x%016lx)\ndisabling initrd\n",