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-rw-r--r--arch/x86/kernel/setup.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 27ae912..ec7e56c 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -587,7 +587,8 @@ struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
#define MAX_SCAN_AREAS 8
-static int __read_mostly memory_corruption_check = 0;
+static int __read_mostly memory_corruption_check = -1;
+
static unsigned __read_mostly corruption_check_size = 64*1024;
static unsigned __read_mostly corruption_check_period = 60; /* seconds */
@@ -634,6 +635,16 @@ static void __init setup_bios_corruption_check(void)
{
u64 addr = PAGE_SIZE; /* assume first page is reserved anyway */
+ if (memory_corruption_check == -1) {
+ memory_corruption_check =
+#ifdef CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
+ 1
+#else
+ 0
+#endif
+ ;
+ }
+
if (corruption_check_size == 0)
memory_corruption_check = 0;
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