only support max_low_pfn below...

Signed-off-by: Yinghai Lu

---
Documentation/kernel-parameters.txt | 2 +-
arch/x86/Kconfig | 1 -
arch/x86/mm/init_32.c | 3 +++
3 files changed, 4 insertions(+), 2 deletions(-)

Index: linux-2.6/Documentation/kernel-parameters.txt
================================================== =================
--- linux-2.6.orig/Documentation/kernel-parameters.txt
+++ linux-2.6/Documentation/kernel-parameters.txt
@@ -1200,7 +1200,7 @@ and is between 256 and 4096 characters.
or
memmap=0x10000$0x18690000

- memtest= [KNL,X86_64] Enable memtest
+ memtest= [KNL,X86] Enable memtest
Format:
range: 0,4 : pattern number
default : 0
Index: linux-2.6/arch/x86/mm/init_32.c
================================================== =================
--- linux-2.6.orig/arch/x86/mm/init_32.c
+++ linux-2.6/arch/x86/mm/init_32.c
@@ -844,6 +844,9 @@ unsigned long __init_refok init_memory_m
reserve_early(table_start << PAGE_SHIFT,
table_end << PAGE_SHIFT, "PGTABLE");

+ if (!after_init_bootmem)
+ early_memtest(start, end);
+
return end >> PAGE_SHIFT;
}

Index: linux-2.6/arch/x86/Kconfig
================================================== =================
--- linux-2.6.orig/arch/x86/Kconfig
+++ linux-2.6/arch/x86/Kconfig
@@ -448,7 +448,6 @@ config PARAVIRT_DEBUG

config MEMTEST
bool "Memtest"
- depends on X86_64
default y
help
This option adds a kernel parameter 'memtest', which allows memtest
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