[PATCH] Fix paranoia about using BIOS quickboot mechanism.

[Alok Kataria]

Make sure that we clear the "shutdown status flag" in the CMOS register
after each CPU is brought up.  This fixes a problem where the "shutdown
status flag" may remain set when a CPU is brought up after booting.

Tested on the X86 tree.

Signed-off-by: Alok N Kataria <akataria@xxxxxxxxxx>
Signed-off-by: Dan Arai <arai@xxxxxxxxxx>

---
arch/x86/kernel/smpboot.c |   10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 5321e35..0b8bba8 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1010,6 +1010,11 @@ do_rest:
/* mark "stuck" area as not stuck */
*((volatile unsigned long *)trampoline_base) = 0;

+ /*
+ * Cleanup possible dangling ends...
+ */
+ smpboot_restore_warm_reset_vector();
+
return boot_error;
}

@@ -1263,11 +1268,6 @@ void __init native_smp_prepare_boot_cpu(void)

void __init native_smp_cpus_done(unsigned int max_cpus)
{
- /*
- * Cleanup possible dangling ends...
- */
- smpboot_restore_warm_reset_vector();
-
Dprintk("Boot done.\n");

impress_friends();
-- 
1.5.4




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