x86: clean up reserve_bootmem_generic() and port it to 32-bit

1. add reserve_bootmem_generic for 32bit
2. change len to unsigned long
3. make early_res_to_bootmem to use it

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

6 files changed, 17 insertions, 16 deletions

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 4f2cd5d179e2..774063f11be0 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -635,7 +635,7 @@ void __init early_res_to_bootmem(u64 start, u64 end)
                         continue;
                 printk(KERN_INFO "  early res: %d [%llx-%llx] %s\n", i,
                         final_start, final_end - 1, r->name);
-                reserve_bootmem(final_start, final_end - final_start,
+                reserve_bootmem_generic(final_start, final_end - final_start,
                                 BOOTMEM_DEFAULT);
         }
 }
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 7ac1b689b70a..b62ac6ba1410 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -859,10 +859,11 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
 
                         if (!reserve)
                                 return 1;
-#ifdef CONFIG_X86_32
-                        reserve_bootmem(virt_to_phys(mpf), PAGE_SIZE,
+                        reserve_bootmem_generic(virt_to_phys(mpf), PAGE_SIZE,
                                         BOOTMEM_DEFAULT);
                         if (mpf->mpf_physptr) {
+                                unsigned long size = PAGE_SIZE;
+#ifdef CONFIG_X86_32
                                 /*
                                  * We cannot access to MPC table to compute
                                  * table size yet, as only few megabytes from
@@ -872,22 +873,15 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
                                  * PAGE_SIZE from mpg->mpf_physptr yields BUG()
                                  * in reserve_bootmem.
                                  */
-                                unsigned long size = PAGE_SIZE;
                                 unsigned long end = max_low_pfn * PAGE_SIZE;
                                 if (mpf->mpf_physptr + size > end)
                                         size = end - mpf->mpf_physptr;
-                                reserve_bootmem(mpf->mpf_physptr, size,
+#endif
+                                reserve_bootmem_generic(mpf->mpf_physptr, size,
                                                 BOOTMEM_DEFAULT);
                         }
 
-#else
-                        reserve_bootmem_generic(virt_to_phys(mpf), PAGE_SIZE,
-                                BOOTMEM_DEFAULT);
-                        if (mpf->mpf_physptr)
-                                reserve_bootmem_generic(mpf->mpf_physptr,
-                                        PAGE_SIZE, BOOTMEM_DEFAULT);
-#endif
-                return 1;
+                        return 1;
                 }
                 bp += 4;
                 length -= 16;
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 0e7bb5e81670..abadb1da70df 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -785,3 +785,9 @@ void free_initrd_mem(unsigned long start, unsigned long end)
         free_init_pages("initrd memory", start, end);
 }
 #endif
+
+int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
+                                   int flags)
+{
+        return reserve_bootmem(phys, len, flags);
+}
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index bf7bf1de6c25..b8c2c1ef7ad5 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -799,7 +799,8 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 }
 #endif
 
-int __init reserve_bootmem_generic(unsigned long phys, unsigned len, int flags)
+int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
+                                   int flags)
 {
 #ifdef CONFIG_NUMA
         int nid, next_nid;
diff --git a/include/asm-x86/proto.h b/include/asm-x86/proto.h
index a9f51472521e..3dd458c385c0 100644
--- a/include/asm-x86/proto.h
+++ b/include/asm-x86/proto.h
@@ -14,8 +14,6 @@ extern void ia32_syscall(void);
 extern void ia32_cstar_target(void);
 extern void ia32_sysenter_target(void);
 
-extern int reserve_bootmem_generic(unsigned long phys, unsigned len, int flags);
-
 extern void syscall32_cpu_init(void);
 
 extern void check_efer(void);
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 686895bacd9d..a1d9b79078ea 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -84,6 +84,8 @@ extern int reserve_bootmem(unsigned long addr, unsigned long size, int flags);
         __alloc_bootmem_low(x, PAGE_SIZE, 0)
 #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
 
+extern int reserve_bootmem_generic(unsigned long addr, unsigned long size,
+                                   int flags);
 extern unsigned long free_all_bootmem(void);
 extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
 extern void *__alloc_bootmem_node(pg_data_t *pgdat,