Merge tag 'xtensa-for-next-20140221-1' into for_next

Xtensa fixes for 3.14:
- allow booting xtfpga on boards with new uBoot and >128MBytes memory;
- drop nonexistent GPIO32 support from fsf variant;
- don't select USE_GENERIC_SMP_HELPERS;
- enable common clock framework support, set up ethoc clock on xtfpga;
- wire up sched_setattr and sched_getattr syscalls.

Signed-off-by: Chris Zankel <chris@zankel.net>

1 files changed, 9 insertions, 4 deletions

diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 479d7537a32a..aff108df92d3 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -90,7 +90,7 @@ int __init mem_reserve(unsigned long start, unsigned long end, int must_exist)
 
 
 /*
- * Initialize the bootmem system and give it all the memory we have available.
+ * Initialize the bootmem system and give it all low memory we have available.
  */
 
 void __init bootmem_init(void)
@@ -142,9 +142,14 @@ void __init bootmem_init(void)
 
         /* Add all remaining memory pieces into the bootmem map */
 
-        for (i=0; i<sysmem.nr_banks; i++)
-                free_bootmem(sysmem.bank[i].start,
-                             sysmem.bank[i].end - sysmem.bank[i].start);
+        for (i = 0; i < sysmem.nr_banks; i++) {
+                if (sysmem.bank[i].start >> PAGE_SHIFT < max_low_pfn) {
+                        unsigned long end = min(max_low_pfn << PAGE_SHIFT,
+                                                sysmem.bank[i].end);
+                        free_bootmem(sysmem.bank[i].start,
+                                     end - sysmem.bank[i].start);
+                }
+        }
 
 }