[PATCH] powerpc: Add a is_kernel_addr() macro
There's a bunch of code that compares an address with KERNELBASE to see if
it's a "kernel address", ie. >= KERNELBASE. The proper test is actually to
compare with PAGE_OFFSET, since we're going to change KERNELBASE soon.
So replace all of them with an is_kernel_addr() macro that does that.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/mm/stab.c b/arch/powerpc/mm/stab.c
index 51e7951..a18dab0 100644
--- a/arch/powerpc/mm/stab.c
+++ b/arch/powerpc/mm/stab.c
@@ -122,7 +122,7 @@
unsigned long offset;
/* Kernel or user address? */
- if (ea >= KERNELBASE) {
+ if (is_kernel_addr(ea)) {
vsid = get_kernel_vsid(ea);
} else {
if ((ea >= TASK_SIZE_USER64) || (! mm))
@@ -133,7 +133,7 @@
stab_entry = make_ste(get_paca()->stab_addr, GET_ESID(ea), vsid);
- if (ea < KERNELBASE) {
+ if (!is_kernel_addr(ea)) {
offset = __get_cpu_var(stab_cache_ptr);
if (offset < NR_STAB_CACHE_ENTRIES)
__get_cpu_var(stab_cache[offset++]) = stab_entry;
@@ -190,7 +190,7 @@
entry++, ste++) {
unsigned long ea;
ea = ste->esid_data & ESID_MASK;
- if (ea < KERNELBASE) {
+ if (!is_kernel_addr(ea)) {
ste->esid_data = 0;
}
}