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-rw-r--r--arch/x86/include/asm/acpi.h2
-rw-r--r--drivers/acpi/tables.c3
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 94c18ebfd68c..c24c07035609 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -170,4 +170,6 @@ static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
}
#endif
+#define ACPI_TABLE_UPGRADE_MAX_PHYS (max_low_pfn_mapped << PAGE_SHIFT)
+
#endif /* _ASM_X86_ACPI_H */
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index b05df13bd79f..9f0ad6ebb368 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -35,6 +35,7 @@
#include <linux/earlycpio.h>
#include <linux/memblock.h>
#include <linux/initrd.h>
+#include <linux/acpi.h>
#include "internal.h"
#ifdef CONFIG_ACPI_CUSTOM_DSDT
@@ -543,7 +544,7 @@ void __init acpi_table_upgrade(void)
return;
acpi_tables_addr =
- memblock_find_in_range(0, max_low_pfn_mapped << PAGE_SHIFT,
+ memblock_find_in_range(0, ACPI_TABLE_UPGRADE_MAX_PHYS,
all_tables_size, PAGE_SIZE);
if (!acpi_tables_addr) {
WARN_ON(1);