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authorSudip Mukherjee <sudipm.mukherjee@gmail.com>2016-02-06 00:36:10 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2016-02-06 03:10:40 +0100
commitaf1ddcb5c63cfb9744c29e88db0bab6bb25ad76b (patch)
tree8696d729ff46ffc56c33a70d3ca45f0d31e9af49 /arch/m32r
parentblock: fix pfn_mkwrite() DAX fault handler (diff)
downloadlinux-af1ddcb5c63cfb9744c29e88db0bab6bb25ad76b.tar.xz
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m32r: fix build failure due to SMP and MMU
One of the randconfig build failed with the error: arch/m32r/kernel/smp.c: In function 'smp_flush_tlb_mm': arch/m32r/kernel/smp.c:283:20: error: subscripted value is neither array nor pointer nor vector mmc = &mm->context[cpu_id]; ^ arch/m32r/kernel/smp.c: In function 'smp_flush_tlb_page': arch/m32r/kernel/smp.c:353:20: error: subscripted value is neither array nor pointer nor vector mmc = &mm->context[cpu_id]; ^ arch/m32r/kernel/smp.c: In function 'smp_invalidate_interrupt': arch/m32r/kernel/smp.c:479:41: error: subscripted value is neither array nor pointer nor vector unsigned long *mmc = &flush_mm->context[cpu_id]; It turned out that CONFIG_SMP was defined but CONFIG_MMU was not defined. But arch/m32r/include/asm/mmu.h only defines mm_context_t as an array when both CONFIG_SMP and CONFIG_MMU are defined. And arch/m32r/kernel/smp.c is always using context as an array. So without MMU SMP can not work. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m32r')
-rw-r--r--arch/m32r/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index 836ac5a963c8..2841c0a3fd3b 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -276,6 +276,7 @@ source "kernel/Kconfig.preempt"
config SMP
bool "Symmetric multi-processing support"
+ depends on MMU
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, say N. If you have a system with more