[SPARC64]: Call real_setup_per_cpu_areas() earlier and use lmb_alloc().

We have to do it like this before we can move the PROM and MDESC device
tree code over to using lmb_alloc().

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 14 insertions, 5 deletions

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 59f020d69d4c..524b88920947 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -20,7 +20,7 @@
 #include <linux/cache.h>
 #include <linux/jiffies.h>
 #include <linux/profile.h>
-#include <linux/bootmem.h>
+#include <linux/lmb.h>
 
 #include <asm/head.h>
 #include <asm/ptrace.h>
@@ -1431,7 +1431,7 @@ EXPORT_SYMBOL(__per_cpu_shift);
 
 void __init real_setup_per_cpu_areas(void)
 {
-        unsigned long goal, size, i;
+        unsigned long paddr, goal, size, i;
         char *ptr;
 
         /* Copy section for each CPU (we discard the original) */
@@ -1441,8 +1441,13 @@ void __init real_setup_per_cpu_areas(void)
         for (size = PAGE_SIZE; size < goal; size <<= 1UL)
                 __per_cpu_shift++;
 
-        ptr = alloc_bootmem_pages(size * NR_CPUS);
+        paddr = lmb_alloc(size * NR_CPUS, PAGE_SIZE);
+        if (!paddr) {
+                prom_printf("Cannot allocate per-cpu memory.\n");
+                prom_halt();
+        }
 
+        ptr = __va(paddr);
         __per_cpu_base = ptr - __per_cpu_start;
 
         for (i = 0; i < NR_CPUS; i++, ptr += size)
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 90e644a0e933..658ec462ed45 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -1208,6 +1208,12 @@ void __init paging_init(void)
         if (tlb_type == hypervisor)
                 sun4v_ktsb_register();
 
+        /* We must setup the per-cpu areas before we pull in the
+         * PROM and the MDESC.  The code there fills in cpu and
+         * other information into per-cpu data structures.
+         */
+        real_setup_per_cpu_areas();
+
         /* Setup bootmem... */
         pages_avail = 0;
         last_valid_pfn = end_pfn = bootmem_init(&pages_avail, phys_base);
@@ -1216,8 +1222,6 @@ void __init paging_init(void)
 
         kernel_physical_mapping_init();
 
-        real_setup_per_cpu_areas();
-
         prom_build_devicetree();
 
         if (tlb_type == hypervisor)