x86: enable memory tester support on 32-bit

yhlu · Ingo Molnar · commit caadbdce240c · 2008-07-18T14:11:58.000+02:00
only supports memory below max_low_pfn.

Signed-off-by: Yinghai Lu &lt;yhlu.kernel@gmail.com&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
@@ -1206,7 +1206,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			         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
@@ -447,7 +447,6 @@ config PARAVIRT_DEBUG
 
 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
@@ -844,6 +844,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
 		reserve_early(table_start << PAGE_SHIFT,
 				 table_end << PAGE_SHIFT, "PGTABLE");
 
+	if (!after_init_bootmem)
+		early_memtest(start, end);
+
 	return end >> PAGE_SHIFT;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -844,6 +844,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,`
`844`	`844`	`reserve_early(table_start << PAGE_SHIFT,`
`845`	`845`	`table_end << PAGE_SHIFT, "PGTABLE");`
`846`	`846`
	`847`	`+ if (!after_init_bootmem)`
	`848`	`+ early_memtest(start, end);`
	`849`	`+`
`847`	`850`	`return end >> PAGE_SHIFT;`
`848`	`851`	`}`
`849`	`852`