commit 5f0b2976cb2b62668a076f54419c24b8ab677167
author Yinghai Lu <yhlu.kernel@gmail.com> Mon Apr 14 16:08:25 2008 -0700
committer Ingo Molnar <mingo@elte.hu> Sat Apr 26 23:41:04 2008 +0200
tree da8439a413adf51359728208beab5ce9f6863ce5
parent e8ee6f0ae5cd860e8e6c02807edfa3c1fa01bcb5

x86: add pci=check_enable_amd_mmconf and dmi check

so will disable that feature by default, and only enable that via
pci=check_enable_amd_mmconf or for system match with dmi table.

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

arch/x86/kernel/setup_64.c

diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index d8a9ee7..2f5c488 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -289,6 +289,18 @@
 	}
 }
 
+#ifdef CONFIG_PCI_MMCONFIG
+extern void __cpuinit fam10h_check_enable_mmcfg(void);
+extern void __init check_enable_amd_mmconf_dmi(void);
+#else
+void __cpuinit fam10h_check_enable_mmcfg(void)
+{
+}
+void __init check_enable_amd_mmconf_dmi(void)
+{
+}
+#endif
+
 /*
  * setup_arch - architecture-specific boot-time initializations
  *
@@ -510,6 +522,9 @@
 	conswitchp = &dummy_con;
 #endif
 #endif
+
+	/* do this before identify_cpu for boot cpu */
+	check_enable_amd_mmconf_dmi();
 }
 
 static int __cpuinit get_model_name(struct cpuinfo_x86 *c)
@@ -697,14 +712,6 @@
 		set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
 }
 
-#ifdef CONFIG_PCI_MMCONFIG
-extern void __cpuinit fam10h_check_enable_mmcfg(void);
-#else
-void __cpuinit fam10h_check_enable_mmcfg(void)
-{
-}
-#endif
-
 static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 {
 	unsigned level;