powerpc: Allow mem=x cmdline to work with 4G+

We're currently choking on mem=4g (and above) due to memory_limit
being specified as an unsigned long. Make memory_limit
phys_addr_t to fix this.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/system.h b/arch/powerpc/include/asm/system.h
index f612798..2b2420a 100644 (file)
--- a/arch/powerpc/include/asm/system.h
+++ b/arch/powerpc/include/asm/system.h
@@ -212,7 +212,7 @@ extern struct task_struct *_switch(struct thread_struct *prev,
 extern unsigned int rtas_data;
 extern int mem_init_done;      /* set on boot once kmalloc can be called */
 extern int init_bootmem_done;  /* set on !NUMA once bootmem is available */
-extern unsigned long memory_limit;
+extern phys_addr_t memory_limit;
 extern unsigned long klimit;
 
 extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);

diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index d59e2b1..bb3d893 100644 (file)
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -125,8 +125,8 @@ void __init reserve_crashkernel(void)
        /* Crash kernel trumps memory limit */
        if (memory_limit && memory_limit <= crashk_res.end) {
                memory_limit = crashk_res.end + 1;
-               printk("Adjusted memory limit for crashkernel, now 0x%lx\n",
-                               memory_limit);
+               printk("Adjusted memory limit for crashkernel, now 0x%llx\n",
+                      (unsigned long long)memory_limit);
        }
 
        printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 5ec6a9e..ce01ff2 100644 (file)
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -426,7 +426,7 @@ static int __init early_parse_mem(char *p)
                return 1;
 
        memory_limit = PAGE_ALIGN(memparse(p, &p));
-       DBG("memory limit = 0x%lx\n", memory_limit);
+       DBG("memory limit = 0x%llx\n", (unsigned long long)memory_limit);
 
        return 0;
 }
@@ -1160,7 +1160,7 @@ static inline void __init phyp_dump_reserve_mem(void) {}
 
 void __init early_init_devtree(void *params)
 {
-       unsigned long limit;
+       phys_addr_t limit;
 
        DBG(" -> early_init_devtree(%p)\n", params);
 
@@ -1204,7 +1204,7 @@ void __init early_init_devtree(void *params)
 
        limit = memory_limit;
        if (! limit) {
-               unsigned long memsize;
+               phys_addr_t memsize;
 
                /* Ensure that total memory size is page-aligned, because
                 * otherwise mark_bootmem() gets upset. */
@@ -1218,7 +1218,7 @@ void __init early_init_devtree(void *params)
        lmb_analyze();
        lmb_dump_all();
 
-       DBG("Phys. mem: %lx\n", lmb_phys_mem_size());
+       DBG("Phys. mem: %llx\n", lmb_phys_mem_size());
 
        /* We may need to relocate the flat tree, do it now.
         * FIXME .. and the initrd too? */

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index f668fa9..d0602a7 100644 (file)
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -57,7 +57,7 @@
 
 int init_bootmem_done;
 int mem_init_done;
-unsigned long memory_limit;
+phys_addr_t memory_limit;
 
 #ifdef CONFIG_HIGHMEM
 pte_t *kmap_pte;