aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/mm/hash_utils_64.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 14be408..8920eea 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -191,12 +191,17 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
unsigned long hash, hpteg;
unsigned long vsid = get_kernel_vsid(vaddr, ssize);
unsigned long va = hpt_va(vaddr, vsid, ssize);
+ unsigned long tprot = prot;
+
+ /* Make kernel text executable */
+ if (in_kernel_text(vaddr))
+ tprot &= ~HPTE_R_N;
hash = hpt_hash(va, shift, ssize);
hpteg = ((hash & htab_hash_mask) * HPTES_PER_GROUP);
BUG_ON(!ppc_md.hpte_insert);
- ret = ppc_md.hpte_insert(hpteg, va, paddr, prot,
+ ret = ppc_md.hpte_insert(hpteg, va, paddr, tprot,
HPTE_V_BOLTED, psize, ssize);
if (ret < 0)
@@ -584,7 +589,7 @@ void __init htab_initialize(void)
{
unsigned long table;
unsigned long pteg_count;
- unsigned long prot, tprot;
+ unsigned long prot;
unsigned long base = 0, size = 0, limit;
int i;
@@ -660,10 +665,9 @@ void __init htab_initialize(void)
for (i=0; i < lmb.memory.cnt; i++) {
base = (unsigned long)__va(lmb.memory.region[i].base);
size = lmb.memory.region[i].size;
- tprot = prot | (in_kernel_text(base) ? _PAGE_EXEC : 0);
DBG("creating mapping for region: %lx..%lx (prot: %x)\n",
- base, size, tprot);
+ base, size, prot);
#ifdef CONFIG_U3_DART
/* Do not map the DART space. Fortunately, it will be aligned
@@ -680,21 +684,21 @@ void __init htab_initialize(void)
unsigned long dart_table_end = dart_tablebase + 16 * MB;
if (base != dart_tablebase)
BUG_ON(htab_bolt_mapping(base, dart_tablebase,
- __pa(base), tprot,
+ __pa(base), prot,
mmu_linear_psize,
mmu_kernel_ssize));
if ((base + size) > dart_table_end)
BUG_ON(htab_bolt_mapping(dart_tablebase+16*MB,
base + size,
__pa(dart_table_end),
- tprot,
+ prot,
mmu_linear_psize,
mmu_kernel_ssize));
continue;
}
#endif /* CONFIG_U3_DART */
BUG_ON(htab_bolt_mapping(base, base + size, __pa(base),
- tprot, mmu_linear_psize, mmu_kernel_ssize));
+ prot, mmu_linear_psize, mmu_kernel_ssize));
}
/*