x86: call vsmp_init explicitly

It becomes to early for ioremap, so we use early_ioremap

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com>
Acked-by: Shai Fultheim <shai@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 9 insertions, 6 deletions

diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index f4f7ecfb898c..e67925674eae 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -345,6 +345,10 @@ void __init setup_arch(char **cmdline_p)
         if (efi_enabled)
                 efi_init();
 
+#ifdef  CONFIG_PARAVIRT
+        vsmp_init();
+#endif
+
         dmi_scan_machine();
 
         io_delay_init();
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index 976691726de4..fdf9fba6ba9c 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -16,10 +16,10 @@
 #include <asm/pci-direct.h>
 #include <asm/io.h>
 
-static void __init vsmp_init(void)
+void __init vsmp_init(void)
 {
         void *address;
-        unsigned int cap, ctl;
+        unsigned int cap, ctl, cfg;
 
         if (!early_pci_allowed())
                 return;
@@ -32,7 +32,8 @@ static void __init vsmp_init(void)
                 return;
 
         /* set vSMP magic bits to indicate vSMP capable kernel */
-        address = ioremap(read_pci_config(0, 0x1f, 0, PCI_BASE_ADDRESS_0), 8);
+        cfg = read_pci_config(0, 0x1f, 0, PCI_BASE_ADDRESS_0);
+        address = early_ioremap(cfg, 8);
         cap = readl(address);
         ctl = readl(address + 4);
         printk(KERN_INFO "vSMP CTL: capabilities:0x%08x  control:0x%08x\n",
@@ -45,8 +46,6 @@ static void __init vsmp_init(void)
                 printk(KERN_INFO "vSMP CTL: control set to:0x%08x\n", ctl);
         }
 
-        iounmap(address);
+        early_iounmap(address, 8);
         return;
 }
-
-core_initcall(vsmp_init);