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x86: enable memory tester support on 32-bit

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only supports memory below max_low_pfn.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2008-07-15 00:03:44 -07:00 committed by Ingo Molnar
parent 1f067167a8
commit caadbdce24
3 changed files with 4 additions and 2 deletions
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2
Documentation/kernel-parameters.txt
View file

@ -1206,7 +1206,7 @@ and is between 256 and 4096 characters. It is defined in the file
or or
memmap=0x10000$0x18690000 memmap=0x10000$0x18690000
memtest= [KNL,X86_64] Enable memtest memtest= [KNL,X86] Enable memtest
Format: <integer> Format: <integer>
range: 0,4 : pattern number range: 0,4 : pattern number
default : 0 <disable> default : 0 <disable>

1
arch/x86/Kconfig
View file

@ -447,7 +447,6 @@ config PARAVIRT_DEBUG
config MEMTEST config MEMTEST
bool "Memtest" bool "Memtest"
depends on X86_64
help help
This option adds a kernel parameter 'memtest', which allows memtest This option adds a kernel parameter 'memtest', which allows memtest
to be set. to be set.

3
arch/x86/mm/init_32.c
View file

@ -844,6 +844,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
reserve_early(table_start << PAGE_SHIFT, reserve_early(table_start << PAGE_SHIFT,
table_end << PAGE_SHIFT, "PGTABLE"); table_end << PAGE_SHIFT, "PGTABLE");
if (!after_init_bootmem)
early_memtest(start, end);
return end >> PAGE_SHIFT; return end >> PAGE_SHIFT;
} }