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[PATCH] powerpc: Add a is_kernel_addr() macro

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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>
This commit is contained in:
Michael Ellerman
2005-12-04 18:39:15 +11:00
committed by Paul Mackerras
parent cd0ca2ce4b
commit 51fae6de24
9 changed files with 20 additions and 15 deletions
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6
arch/powerpc/mm/slb.c
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@@ -134,14 +134,14 @@ void switch_slb(struct task_struct *tsk, struct mm_struct *mm)
else
unmapped_base = TASK_UNMAPPED_BASE_USER64;
if (pc >= KERNELBASE)
if (is_kernel_addr(pc))
return;
slb_allocate(pc);
if (GET_ESID(pc) == GET_ESID(stack))
return;
if (stack >= KERNELBASE)
if (is_kernel_addr(stack))
return;
slb_allocate(stack);
@@ -149,7 +149,7 @@ void switch_slb(struct task_struct *tsk, struct mm_struct *mm)
|| (GET_ESID(stack) == GET_ESID(unmapped_base)))
return;
if (unmapped_base >= KERNELBASE)
if (is_kernel_addr(unmapped_base))
return;
slb_allocate(unmapped_base);
}