These changes are a raw update to a vanilla kernel 4.1.10, with the

[kvmfornfv.git] / kernel / arch / arm64 / include / asm / memory.h

diff --git a/kernel/arch/arm64/include/asm/memory.h b/kernel/arch/arm64/include/asm/memory.h
index f800d45..44a59c2 100644 (file)
--- a/kernel/arch/arm64/include/asm/memory.h
+++ b/kernel/arch/arm64/include/asm/memory.h
@@ -113,6 +113,14 @@ extern phys_addr_t         memstart_addr;
 /* PHYS_OFFSET - the physical address of the start of memory. */
 #define PHYS_OFFSET            ({ memstart_addr; })
 
+/*
+ * The maximum physical address that the linear direct mapping
+ * of system RAM can cover. (PAGE_OFFSET can be interpreted as
+ * a 2's complement signed quantity and negated to derive the
+ * maximum size of the linear mapping.)
+ */
+#define MAX_MEMBLOCK_ADDR      ({ memstart_addr - PAGE_OFFSET - 1; })
+
 /*
  * PFNs are used to describe any physical page; this means
  * PFN 0 == physical address 0.