5 files changed, 36 insertions, 26 deletions

diff --git a/arch/powerpc/kernel/proc_powerpc.c b/arch/powerpc/kernel/proc_powerpc.c
index 3bda365843e4..e8083e05a1d0 100644
--- a/arch/powerpc/kernel/proc_powerpc.c
+++ b/arch/powerpc/kernel/proc_powerpc.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/memblock.h>
 #include <linux/mm.h>
 #include <linux/proc_fs.h>
 #include <linux/kernel.h>
@@ -44,13 +45,35 @@ static const struct proc_ops page_map_proc_ops = {
 	.proc_mmap	= page_map_mmap,
 };
 
+static union {
+	struct systemcfg	data;
+	u8			page[PAGE_SIZE];
+} systemcfg_data_store __page_aligned_data;
+struct systemcfg *systemcfg = &systemcfg_data_store.data;
 
 static int __init proc_ppc64_init(void)
 {
 	struct proc_dir_entry *pde;
 
+	strcpy((char *)systemcfg->eye_catcher, "SYSTEMCFG:PPC64");
+	systemcfg->version.major = SYSTEMCFG_MAJOR;
+	systemcfg->version.minor = SYSTEMCFG_MINOR;
+	systemcfg->processor = mfspr(SPRN_PVR);
+	/*
+	 * Fake the old platform number for pSeries and add
+	 * in LPAR bit if necessary
+	 */
+	systemcfg->platform = 0x100;
+	if (firmware_has_feature(FW_FEATURE_LPAR))
+		systemcfg->platform |= 1;
+	systemcfg->physicalMemorySize = memblock_phys_mem_size();
+	systemcfg->dcache_size = ppc64_caches.l1d.size;
+	systemcfg->dcache_line_size = ppc64_caches.l1d.line_size;
+	systemcfg->icache_size = ppc64_caches.l1i.size;
+	systemcfg->icache_line_size = ppc64_caches.l1i.line_size;
+
 	pde = proc_create_data("powerpc/systemcfg", S_IFREG | 0444, NULL,
-			       &page_map_proc_ops, vdso_data);
+			       &page_map_proc_ops, systemcfg);
 	if (!pde)
 		return 1;
 	proc_set_size(pde, PAGE_SIZE);
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 943430077375..d0b32ff2bc8d 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -560,7 +560,9 @@ void __init smp_setup_cpu_maps(void)
 	out:
 		of_node_put(dn);
 	}
-	vdso_data->processorCount = num_present_cpus();
+#endif
+#ifdef CONFIG_PPC64_PROC_SYSTEMCFG
+	systemcfg->processorCount = num_present_cpus();
 #endif /* CONFIG_PPC64 */
 
         /* Initialize CPU <=> thread mapping/
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 4ab9b8cee77a..87ae45bf1045 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1186,8 +1186,8 @@ int generic_cpu_disable(void)
 		return -EBUSY;
 
 	set_cpu_online(cpu, false);
-#ifdef CONFIG_PPC64
-	vdso_data->processorCount--;
+#ifdef CONFIG_PPC64_PROC_SYSTEMCFG
+	systemcfg->processorCount--;
 #endif
 	/* Update affinity of all IRQs previously aimed at this CPU */
 	irq_migrate_all_off_this_cpu();
@@ -1642,10 +1642,12 @@ void start_secondary(void *unused)
 
 	secondary_cpu_time_init();
 
-#ifdef CONFIG_PPC64
+#ifdef CONFIG_PPC64_PROC_SYSTEMCFG
 	if (system_state == SYSTEM_RUNNING)
-		vdso_data->processorCount++;
+		systemcfg->processorCount++;
+#endif
 
+#ifdef CONFIG_PPC64
 	vdso_getcpu_init();
 #endif
 	set_numa_node(numa_cpu_lookup_table[cpu]);
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 4a95654c1d36..7d18eb83198b 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -950,6 +950,9 @@ void __init time_init(void)
 	}
 
 	vdso_data->tb_ticks_per_sec = tb_ticks_per_sec;
+#ifdef CONFIG_PPC64_PROC_SYSTEMCFG
+	systemcfg->tb_ticks_per_sec = tb_ticks_per_sec;
+#endif
 
 	/* initialise and enable the large decrementer (if we have one) */
 	set_decrementer_max();
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index ee4b9d676cff..924f7f4fa597 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -16,7 +16,6 @@
 #include <linux/user.h>
 #include <linux/elf.h>
 #include <linux/security.h>
-#include <linux/memblock.h>
 #include <linux/syscalls.h>
 #include <linux/time_namespace.h>
 #include <vdso/datapage.h>
@@ -349,25 +348,6 @@ static struct page ** __init vdso_setup_pages(void *start, void *end)
 static int __init vdso_init(void)
 {
 #ifdef CONFIG_PPC64
-	/*
-	 * Fill up the "systemcfg" stuff for backward compatibility
-	 */
-	strcpy((char *)vdso_data->eye_catcher, "SYSTEMCFG:PPC64");
-	vdso_data->version.major = SYSTEMCFG_MAJOR;
-	vdso_data->version.minor = SYSTEMCFG_MINOR;
-	vdso_data->processor = mfspr(SPRN_PVR);
-	/*
-	 * Fake the old platform number for pSeries and add
-	 * in LPAR bit if necessary
-	 */
-	vdso_data->platform = 0x100;
-	if (firmware_has_feature(FW_FEATURE_LPAR))
-		vdso_data->platform |= 1;
-	vdso_data->physicalMemorySize = memblock_phys_mem_size();
-	vdso_data->dcache_size = ppc64_caches.l1d.size;
-	vdso_data->dcache_line_size = ppc64_caches.l1d.line_size;
-	vdso_data->icache_size = ppc64_caches.l1i.size;
-	vdso_data->icache_line_size = ppc64_caches.l1i.line_size;
 	vdso_data->dcache_block_size = ppc64_caches.l1d.block_size;
 	vdso_data->icache_block_size = ppc64_caches.l1i.block_size;
 	vdso_data->dcache_log_block_size = ppc64_caches.l1d.log_block_size;