x86: Remove base argument from x86_init.paging.pagetable_setup_start

We either use swapper_pg_dir or the argument is unused. Preparatory
patch to simplify platform pagetable setup further.

Signed-off-by: Attilio Rao <attilio.rao@citrix.com>
Ackedb-by: <konrad.wilk@oracle.com>
Cc: <Ian.Campbell@citrix.com>
Cc: <Stefano.Stabellini@eu.citrix.com>
Cc: <xen-devel@lists.xensource.com>
Link: http://lkml.kernel.org/r/1345580561-8506-2-git-send-email-attilio.rao@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

6 files changed, 10 insertions, 9 deletions

diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index 013286a10c2c..e02b875e6922 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -303,11 +303,11 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pte);
 
 extern void native_pagetable_reserve(u64 start, u64 end);
 #ifdef CONFIG_X86_32
-extern void native_pagetable_setup_start(pgd_t *base);
+extern void native_pagetable_setup_start(void);
 extern void native_pagetable_setup_done(pgd_t *base);
 #else
-#define native_pagetable_setup_start x86_init_pgd_noop
-#define native_pagetable_setup_done  x86_init_pgd_noop
+#define native_pagetable_setup_start x86_init_pgd_start_noop
+#define native_pagetable_setup_done  x86_init_pgd_done_noop
 #endif
 
 struct seq_file;
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 38155f667144..782ba0c4b266 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -85,7 +85,7 @@ struct x86_init_mapping {
  * @pagetable_setup_done:	platform specific post paging_init() call
  */
 struct x86_init_paging {
-	void (*pagetable_setup_start)(pgd_t *base);
+	void (*pagetable_setup_start)(void);
 	void (*pagetable_setup_done)(pgd_t *base);
 };
 
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f4b9b80e1b95..90cbbe00adca 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -961,7 +961,7 @@ void __init setup_arch(char **cmdline_p)
 	kvmclock_init();
 #endif
 
-	x86_init.paging.pagetable_setup_start(swapper_pg_dir);
+	x86_init.paging.pagetable_setup_start();
 	paging_init();
 	x86_init.paging.pagetable_setup_done(swapper_pg_dir);
 
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index 9f3167e891ef..3b88493ec7ca 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -26,7 +26,8 @@
 
 void __cpuinit x86_init_noop(void) { }
 void __init x86_init_uint_noop(unsigned int unused) { }
-void __init x86_init_pgd_noop(pgd_t *unused) { }
+void __init x86_init_pgd_start_noop(void) { }
+void __init x86_init_pgd_done_noop(pgd_t *unused) { }
 int __init iommu_init_noop(void) { return 0; }
 void iommu_shutdown_noop(void) { }
 
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 575d86f85ce4..c4aa1b25ba34 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -445,10 +445,10 @@ static inline void permanent_kmaps_init(pgd_t *pgd_base)
 }
 #endif /* CONFIG_HIGHMEM */
 
-void __init native_pagetable_setup_start(pgd_t *base)
+void __init native_pagetable_setup_start(void)
 {
 	unsigned long pfn, va;
-	pgd_t *pgd;
+	pgd_t *pgd, *base = swapper_pg_dir;
 	pud_t *pud;
 	pmd_t *pmd;
 	pte_t *pte;
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 5141d808e751..32e66c8d0149 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1174,7 +1174,7 @@ static void xen_exit_mmap(struct mm_struct *mm)
 	spin_unlock(&mm->page_table_lock);
 }
 
-static void __init xen_pagetable_setup_start(pgd_t *base)
+static void __init xen_pagetable_setup_start(void)
 {
 }