x86, VisWS: turn into generic arch, update include/asm-x86/mach-visws/smpboot_hooks.h

update include/asm-x86/mach-visws/smpboot_hooks.h to
include/asm-x86/mach-default/smpboot_hooks.h (the generic version).

this _should_ work, because VISWS sets skip_ioapic_setup, but it
should be tested on a real VISWS to make sure.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 38 insertions, 7 deletions

diff --git a/include/asm-x86/mach-visws/smpboot_hooks.h b/include/asm-x86/mach-visws/smpboot_hooks.h
index c9b83e395a2e..56d001b9dce4 100644
--- a/include/asm-x86/mach-visws/smpboot_hooks.h
+++ b/include/asm-x86/mach-visws/smpboot_hooks.h
@@ -1,3 +1,13 @@
+/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
+ * which needs to alter them. */
+
+static inline void smpboot_clear_io_apic_irqs(void)
+{
+#ifdef CONFIG_X86_IO_APIC
+        io_apic_irqs = 0;
+#endif
+}
+
 static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
 {
         CMOS_WRITE(0xa, 0xf);
@@ -9,20 +19,41 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
         Dprintk("3.\n");
 }
 
-/* for visws do nothing for any of these */
-
-static inline void smpboot_clear_io_apic_irqs(void)
-{
-}
-
 static inline void smpboot_restore_warm_reset_vector(void)
 {
+        /*
+         * Install writable page 0 entry to set BIOS data area.
+         */
+        local_flush_tlb();
+
+        /*
+         * Paranoid:  Set warm reset code and vector here back
+         * to default values.
+         */
+        CMOS_WRITE(0, 0xf);
+
+        *((volatile long *) phys_to_virt(0x467)) = 0;
 }
 
-static inline void smpboot_setup_io_apic(void)
+static inline void __init smpboot_setup_io_apic(void)
 {
+#ifdef CONFIG_X86_IO_APIC
+        /*
+         * Here we can be sure that there is an IO-APIC in the system. Let's
+         * go and set it up:
+         */
+        if (!skip_ioapic_setup && nr_ioapics)
+                setup_IO_APIC();
+        else {
+                nr_ioapics = 0;
+                localise_nmi_watchdog();
+        }
+#endif
 }
 
 static inline void smpboot_clear_io_apic(void)
 {
+#ifdef CONFIG_X86_IO_APIC
+        nr_ioapics = 0;
+#endif
 }