[HVM] Disable VMX/SVM on auxiliary processors when shutting down an SMP system.

With Intel VT, VMXOFF needs to be executed before halting the
CPU. Without this fix Xen or Linux is unable to start up the CPU after
a kexec reboot.

Tested using x86_32 on a Pentium D 930.

Signed-Off-By: Magnus Damm <magnus@valinux.co.jp>

diff --git a/xen/arch/x86/smp.c b/xen/arch/x86/smp.c
index 27dc4daf87de7dc6976b1de1f82d6751b6b4c356..2d1424003970b730ab0b7ac2b7875a59c28c28b3 100644 (file)
--- a/xen/arch/x86/smp.c
+++ b/xen/arch/x86/smp.c
@@ -21,6 +21,7 @@
 #include <asm/smpboot.h>
 #include <asm/hardirq.h>
 #include <asm/ipi.h>
+#include <asm/hvm/hvm.h>
 #include <mach_apic.h>
 
 /*
@@ -306,6 +307,7 @@ static void stop_this_cpu (void *dummy)
 
     local_irq_disable();
     disable_local_APIC();
+    hvm_disable();
 
     for ( ; ; )
         __asm__ __volatile__ ( "hlt" );