X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=arch%2Fparisc%2Fkernel%2Fsetup.c;h=81d6f639194478fa96b33a7f30ba4d612c9cfa8f;hb=690d097c00c88fa9d93d198591e184164b1d8c20;hp=f7ea626e29c9b3bce80d28062cbf802ab2313785;hpb=abaee091a18c19ccd86feb1c8374585d82e96777;p=cascardo%2Flinux.git

diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index f7ea626e29c9..81d6f6391944 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -38,6 +38,7 @@
 #include <linux/export.h>
 
 #include <asm/processor.h>
+#include <asm/sections.h>
 #include <asm/pdc.h>
 #include <asm/led.h>
 #include <asm/machdep.h>	/* for pa7300lc_init() proto */
@@ -140,6 +141,13 @@ void __init setup_arch(char **cmdline_p)
 #endif
 	printk(KERN_CONT ".\n");
 
+	/*
+	 * Check if initial kernel page mappings are sufficient.
+	 * panic early if not, else we may access kernel functions
+	 * and variables which can't be reached.
+	 */
+	if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
+		panic("KERNEL_INITIAL_ORDER too small!");
 
 	pdc_console_init();