RE: [Xen-devel] [PATCH] [VT] SMP VMX guest AP bring up need calldo_boot_vcpu in hypervisor

["Li, Xin B" <xin.b.li@xxxxxxxxx>]

Jun suggested to use another elegant way, pls ignore this one.
-Xin

>SMP VMX guest AP bring up need call do_boot_vcpu in hypervisor.
>Current call to do_boot_vcpu always from domain, however, for SMP VMX
>guest AP bring up, it is called from xen hypervisor.
>Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
>
>diff -r f069a06e650f xen/common/domain.c
>--- a/xen/common/domain.c   Wed Sep 28 21:18:30 2005
>+++ b/xen/common/domain.c   Thu Sep 29 07:00:15 2005
>@@ -390,8 +390,9 @@
>         goto out;
>     }
>
>-    if ( copy_from_user(c, ctxt, sizeof(*c)) )
>-    {
>+    if (vcpu && (ctxt->flags & VGCF_VMX_GUEST)) {
>+        memcpy(c, ctxt, sizeof(*c));
>+    } else if ( copy_from_user(c, ctxt, sizeof(*c)) ) {
>         rc = -EFAULT;
>         goto out;
>     }
>
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