Split the commpage initialization into two parts. The second part is executed

after all CPUs have been queried for their features. On SMP machines
sysenter/sysexit weren't used before due to the non-boot CPUs appearing not
to have the feature.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31226 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/commpage.h

@@ -16,12 +16,14 @@ extern "C" {
 #endif
 
 status_t	commpage_init(void);
+status_t	commpage_init_post_cpus(void);
 void*		allocate_commpage_entry(int entry, size_t size);
 void*		fill_commpage_entry(int entry, const void* copyFrom, size_t size);
 image_id	get_commpage_image();
 
+// implemented in the architecture specific part
 status_t	arch_commpage_init(void);
-	// implemented in the architecture specific part
+status_t	arch_commpage_init_post_cpus(void);
 
 #ifdef __cplusplus
 }	// extern "C"

src/system/kernel/arch/m68k/arch_commpage.cpp

@@ -3,7 +3,6 @@
  * Distributed under the terms of the MIT License.
  */
 
-
 #include <commpage.h>
 
 #include <string.h>
@@ -15,7 +14,6 @@
 #include <smp.h>
 
 
-
 status_t
 arch_commpage_init(void)
 {
@@ -27,3 +25,9 @@ arch_commpage_init(void)
 	return B_OK;
 }
 
+
+status_t
+arch_commpage_init_post_cpus(void)
+{
+	return B_OK;
+}

src/system/kernel/arch/ppc/arch_commpage.cpp

@@ -3,7 +3,6 @@
  * Distributed under the terms of the MIT License.
  */
 
-
 #include <commpage.h>
 
 #include <string.h>
@@ -14,8 +13,6 @@
 #include <smp.h>
 
 
-
-
 status_t
 arch_commpage_init(void)
 {
@@ -24,3 +21,9 @@ arch_commpage_init(void)
 	return B_OK;
 }
 
+
+status_t
+arch_commpage_init_post_cpus(void)
+{
+	return B_OK;
+}

src/system/kernel/arch/x86/arch_commpage.cpp

@@ -1,4 +1,5 @@
 /*
+ * Copyright 2008-2009, Ingo Weinhold, [email protected].
  * Copyright 2007, Travis Geiselbrecht. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
@@ -103,10 +104,16 @@ initialize_commpage_syscall(void)
 
 status_t
 arch_commpage_init(void)
+{
+	return B_OK;
+}
+
+
+status_t
+arch_commpage_init_post_cpus(void)
 {
 	// select the optimum syscall mechanism and patch the commpage
 	initialize_commpage_syscall();
 
 	return B_OK;
 }
-

src/system/kernel/commpage.cpp

@@ -89,3 +89,9 @@ commpage_init(void)
 	return B_OK;
 }
 
+
+status_t
+commpage_init_post_cpus(void)
+{
+	return arch_commpage_init_post_cpus();
+}

src/system/kernel/main.cpp

@@ -249,6 +249,8 @@ main2(void *unused)
 
 	boot_splash_init(sKernelArgs.boot_splash);
 
+	commpage_init_post_cpus();
+
 	TRACE("Init modules\n");
 	boot_splash_set_stage(BOOT_SPLASH_STAGE_1_INIT_MODULES);
 	module_init_post_threads();