1 files changed, 11 insertions, 5 deletions

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index ec3e2c72302a..a9828d748e2c 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -610,8 +610,6 @@ static void __init remap_kernel(void)
 
 static void __init inherit_prom_mappings(void)
 {
-        read_obp_translations();
-
         /* Now fixup OBP's idea about where we really are mapped. */
         printk("Remapping the kernel... ");
         remap_kernel();
@@ -1747,7 +1745,17 @@ void __init paging_init(void)
 
         lmb_init();
 
-        /* Find available physical memory... */
+        /* Find available physical memory...
+         *
+         * Read it twice in order to work around a bug in openfirmware.
+         * The call to grab this table itself can cause openfirmware to
+         * allocate memory, which in turn can take away some space from
+         * the list of available memory.  Reading it twice makes sure
+         * we really do get the final value.
+         */
+        read_obp_translations();
+        read_obp_memory("reg", &pall[0], &pall_ents);
+        read_obp_memory("available", &pavail[0], &pavail_ents);
         read_obp_memory("available", &pavail[0], &pavail_ents);
 
         phys_base = 0xffffffffffffffffUL;
@@ -1788,8 +1796,6 @@ void __init paging_init(void)
         
         inherit_prom_mappings();
         
-        read_obp_memory("reg", &pall[0], &pall_ents);
-
         init_kpte_bitmap();
 
         /* Ok, we can use our TLB miss and window trap handlers safely.  */