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Commit caadbdce authored by Yinghai Lu's avatar Yinghai Lu Committed by Ingo Molnar
Browse files

x86: enable memory tester support on 32-bit 



only supports memory below max_low_pfn.

Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 1f067167

Documentation/kernel-parameters.txt

+1 −1
Original line number Diff line number Diff line
@@ -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>

arch/x86/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -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.

arch/x86/mm/init_32.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

}