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[Xen-devel] [PATCH] x86: TSS busy flag

from [Jean Guyader]

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Subject:	[Xen-devel] [PATCH] x86: TSS busy flag
From:	Jean Guyader <jean.guyader@xxxxxxxxxxxxx>
Date:	Tue, 17 Jun 2008 14:48:05 +0100
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x86: Intel wants the TSS busy flag set when we do a vmentry.

Signed-off-by: Jean Guyader <jean.guyader@xxxxxxxxxxxxx>

--
Jean Guyader

diff -r 7e00ebe2b7fd xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c        Tue Jun 17 09:36:25 2008 +0100
+++ b/xen/arch/x86/hvm/vmx/vmx.c        Tue Jun 17 14:45:06 2008 +0100
@@ -624,6 +624,9 @@ static void vmx_load_cpu_state(struct vc
     v->arch.hvm_vmx.cstar     = data->msr_cstar;
     v->arch.hvm_vmx.shadow_gs = data->shadow_gs;
 #endif
+
+    /* The busy flags must be set for Intel */
+    set_bit(1, &data->tr_arbytes);
 
     hvm_set_guest_tsc(v, data->tsc);
 }

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