x86: enable memory tester support on 32-bit
only supports memory below max_low_pfn.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 09ad745..70624dd 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1206,7 +1206,7 @@
or
memmap=0x10000$0x18690000
- memtest= [KNL,X86_64] Enable memtest
+ memtest= [KNL,X86] Enable memtest
Format: <integer>
range: 0,4 : pattern number
default : 0 <disable>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 96e0c2e..03980cb 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -447,7 +447,6 @@
config MEMTEST
bool "Memtest"
- depends on X86_64
help
This option adds a kernel parameter 'memtest', which allows memtest
to be set.
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 9689a51..3eeab6d 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -844,6 +844,9 @@
reserve_early(table_start << PAGE_SHIFT,
table_end << PAGE_SHIFT, "PGTABLE");
+ if (!after_init_bootmem)
+ early_memtest(start, end);
+
return end >> PAGE_SHIFT;
}