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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 /include/asm-powerpc/page.h
parentcd0ca2ce4b2f4a5132e7e230be8a510755c20870 (diff)
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[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 'include/asm-powerpc/page.h')
-rw-r--r--include/asm-powerpc/page.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-powerpc/page.h b/include/asm-powerpc/page.h
index 18c1e5e..94905ba 100644
--- a/include/asm-powerpc/page.h
+++ b/include/asm-powerpc/page.h
@@ -86,6 +86,12 @@
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
+/*
+ * Don't compare things with KERNELBASE or PAGE_OFFSET to test for
+ * "kernelness", use is_kernel_addr() - it should do what you want.
+ */
+#define is_kernel_addr(x) ((x) >= PAGE_OFFSET)
+
#ifndef __ASSEMBLY__
#undef STRICT_MM_TYPECHECKS
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