The patch titled
Subject: m32r: fix build failure due to SMP and MMU
has been added to the -mm tree. Its filename is
m32r-fix-build-failure-due-to-smp-and-mmu.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/m32r-fix-build-failure-due-to-smp-and-mmu.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/m32r-fix-build-failure-due-to-smp-and-mmu.patch
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------------------------------------------------------
From: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/m32r/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff -puN arch/m32r/Kconfig~m32r-fix-build-failure-due-to-smp-and-mmu arch/m32r/Kconfig
--- a/arch/m32r/Kconfig~m32r-fix-build-failure-due-to-smp-and-mmu
+++ a/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
_
Patches currently in -mm which might be from sudipm.mukherjee@xxxxxxxxx are
proc-fix-missing-reference-of-mm.patch
m32r-fix-build-failure-due-to-smp-and-mmu.patch
m32r-mm-fix-build-warning.patch
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