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| author | Will Deacon <will.deacon@arm.com> | 2011-01-11 14:04:36 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-11 18:32:24 +0100 |
| commit | 6cde6d4217ff01422c093d3f7ff550b7a324e96e (patch) | |
| tree | 2542d21d333bbbb1dd1deed655acabc834465c0f /arch/arm | |
| parent | ARM: sched_clock: make minsec argument to clocks_calc_mult_shift() zero (diff) | |
| download | linux-6cde6d4217ff01422c093d3f7ff550b7a324e96e.tar.xz linux-6cde6d4217ff01422c093d3f7ff550b7a324e96e.zip | |
ARM: 6619/1: nommu: avoid mapping vectors page when !CONFIG_MMU
When running without an MMU, we do not need to install a mapping for the
vectors page. Attempting to do so causes a compile-time error because
install_special_mapping is not defined.
This patch adds compile-time guards to the vector mapping functions
so that we can build nommu configurations once more.
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/kernel/process.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index e76fcaadce03..94bbedbed639 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -483,6 +483,7 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) return randomize_range(mm->brk, range_end, 0) ? : mm->brk; } +#ifdef CONFIG_MMU /* * The vectors page is always readable from user space for the * atomic helpers and the signal restart code. Let's declare a mapping @@ -503,3 +504,4 @@ const char *arch_vma_name(struct vm_area_struct *vma) { return (vma->vm_start == 0xffff0000) ? "[vectors]" : NULL; } +#endif |