---

yaml
---
r: 327
b: refs/heads/master
c: cdfb82f
h: refs/heads/master
i:
  325: 4890948
  323: de0ea23
  319: 3b729a5
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6119be0bba10e7e7b1e5650a87812fa2fd8d3a60
+refs/heads/master: cdfb82fff33cf3b1a367a427e5d89a012dc568b1

trunk/arch/arm26/kernel/sys_arm.c

@@ -64,10 +64,10 @@ inline long do_mmap2(
 	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 
 	/*
-	 * If we are doing a fixed mapping, and address < PAGE_SIZE,
+	 * If we are doing a fixed mapping, and address < FIRST_USER_ADDRESS,
 	 * then deny it.
 	 */
-	if (flags & MAP_FIXED && addr < PAGE_SIZE && vectors_base() == 0)
+	if (flags & MAP_FIXED && addr < FIRST_USER_ADDRESS)
 		goto out;
 
 	error = -EBADF;
@@ -121,11 +121,10 @@ sys_arm_mremap(unsigned long addr, unsigned long old_len,
 	unsigned long ret = -EINVAL;
 
 	/*
-	 * If we are doing a fixed mapping, and address < PAGE_SIZE,
+	 * If we are doing a fixed mapping, and address < FIRST_USER_ADDRESS,
 	 * then deny it.
 	 */
-	if (flags & MREMAP_FIXED && new_addr < PAGE_SIZE &&
-	    vectors_base() == 0)
+	if (flags & MREMAP_FIXED && new_addr < FIRST_USER_ADDRESS)
 		goto out;
 
 	down_write(&current->mm->mmap_sem);

trunk/include/asm-arm26/pgtable.h

@@ -62,6 +62,13 @@
 #define PTRS_PER_PMD            1
 #define PTRS_PER_PTE            32
 
+/*
+ * This is the lowest virtual address we can permit any user space
+ * mapping to be mapped at.  This is particularly important for
+ * non-high vector CPUs.
+ */
+#define FIRST_USER_ADDRESS	PAGE_SIZE
+
 #define FIRST_USER_PGD_NR       1
 #define USER_PTRS_PER_PGD       ((TASK_SIZE/PGD_SIZE) - FIRST_USER_PGD_NR)