Blackfin: make sure MPU CPLB for first 1k is marked as valid
Robin Getz [Tue, 5 May 2009 17:14:39 +0000 (17:14 +0000)]
This way we properly catch and kill applications that jump to a NULL ptr.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/kernel/cplb-mpu/cplbinit.c

index 3e329a6..c006a44 100644 (file)
@@ -64,7 +64,7 @@ void __init generate_cplb_tables_cpu(unsigned int cpu)
        dcplb_tbl[cpu][i_d++].data = SDRAM_OOPS | PAGE_SIZE_1KB;
 
        icplb_tbl[cpu][i_i].addr = 0;
-       icplb_tbl[cpu][i_i++].data = i_cache | CPLB_USER_RD | PAGE_SIZE_1KB;
+       icplb_tbl[cpu][i_i++].data = CPLB_VALID | i_cache | CPLB_USER_RD | PAGE_SIZE_1KB;
 
        /* Cover kernel memory with 4M pages.  */
        addr = 0;