From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastian Herbszt <herbszt@gmx.de>
Subject: [PATCH] kvm: bios: end AP boot code execution in rombios
Date: Mon, 18 Aug 2008 00:35:43 +0200
Message-ID: <1219012543$2777@local>
References: <200807311043.20880.sheng.yang@intel.com> <200808010919.00663.sheng.yang@intel.com> <033901c8f4d6$5b972570$0201a8c0@zeug> <200808051614.33138.sheng.yang@intel.com> <02a901c8f80f$940da820$0201a8c0@zeug> <489E9DAC.3030400@qumranet.com>
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Cc: "Yang, Sheng" <sheng.yang@intel.com>, kvm@vger.kernel.org
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Jump to rombios before executing the halt loop.

Signed-off-by: Sebastian Herbszt <herbszt@gmx.de>

diff -uNrp a/bios/rombios32start.S b/bios/rombios32start.S
--- a/bios/rombios32start.S	2008-08-17 23:30:42.000000000 +0200
+++ b/bios/rombios32start.S	2008-08-17 23:38:42.000000000 +0200
@@ -40,6 +40,7 @@ _start:
 
   .code16
 smp_ap_boot_code_start:
+  cli
   xor %ax, %ax
   mov %ax, %ds
   xor %eax, %eax
@@ -60,6 +61,7 @@ smp_ap_boot_code_start:
 12:
 
   incw CPU_COUNT_ADDR
+  ljmp $0xe000, $(1f-_start)
 1:
   hlt
   jmp 1b