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authorMichael Ellerman <michael@ellerman.id.au>2005-12-04 18:39:15 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-09 14:51:50 +1100
commit51fae6de24da57bc6cdaa1b253595c3513ecbf2d (patch)
tree27df7f07270fb79eae44783331faeb3af3d313ab /arch/powerpc/mm/stab.c
parentcd0ca2ce4b2f4a5132e7e230be8a510755c20870 (diff)
downloadop-kernel-dev-51fae6de24da57bc6cdaa1b253595c3513ecbf2d.zip
op-kernel-dev-51fae6de24da57bc6cdaa1b253595c3513ecbf2d.tar.gz
[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>
Diffstat (limited to 'arch/powerpc/mm/stab.c')
-rw-r--r--arch/powerpc/mm/stab.c6
1 files changed, 3 insertions, 3 deletions
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 @@ static int __ste_allocate(unsigned long ea, struct mm_struct *mm)
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 @@ static int __ste_allocate(unsigned long ea, struct mm_struct *mm)
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 @@ void switch_stab(struct task_struct *tsk, struct mm_struct *mm)
entry++, ste++) {
unsigned long ea;
ea = ste->esid_data & ESID_MASK;
- if (ea < KERNELBASE) {
+ if (!is_kernel_addr(ea)) {
ste->esid_data = 0;
}
}
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