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[Xen-devel] [PATCH] Enable x2APIC only when BSP did so


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
  • Date: Tue, 19 Aug 2008 18:39:03 -0700
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Delivery-date: Tue, 19 Aug 2008 18:39:30 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AckCZYPvF1kzBpEETmiDG0FiLgfOTQ==
  • Thread-topic: [PATCH] Enable x2APIC only when BSP did so

The following (attached) patch ensures that APs enable x2APIC only when the BSP 
did so. Please apply.

Signed-off-by: Jun Nakajima <jun.nakajikma@xxxxxxxxx>
---
diff -r 7c10be016e43 xen/arch/x86/smpboot.c
--- a/xen/arch/x86/smpboot.c    Tue Aug 19 10:51:41 2008 +0100
+++ b/xen/arch/x86/smpboot.c    Tue Aug 19 12:50:55 2008 -0700
@@ -325,7 +325,7 @@ void __devinit smp_callin(void)
         */
        wait_for_init_deassert(&init_deasserted);

-       if ( x2apic_is_available() )
+       if ( x2apic_enabled )
                enable_x2apic();

        /*

Jun
---
Intel Open Source Technology Center


Attachment: x2apic_smp.patch
Description: x2apic_smp.patch

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