Re: [Xen-devel] [PATCH 1/4] x86/HVM: don't inject #DB with error code

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Jan Beulich
> Sent: Wednesday, November 11, 2015 1:38 AM
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

A simple description why error code is not required is preferred here.

> 
> --- a/xen/arch/x86/hvm/hvm.c
> +++ b/xen/arch/x86/hvm/hvm.c
> @@ -4133,7 +4133,7 @@ void hvm_task_switch(
>          goto out;
> 
>      if ( (tss.trace & 1) && !exn_raised )
> -        hvm_inject_hw_exception(TRAP_debug, tss_sel & 0xfff8);
> +        hvm_inject_hw_exception(TRAP_debug, HVM_DELIVER_NO_ERROR_CODE);
> 
>      tr.attr.fields.type = 0xb; /* busy 32-bit tss */
>      hvm_set_segment_register(v, x86_seg_tr, &tr);
> 
> 


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