Re: [Xen-devel] [PATCH v2 17/19] x86/hvm: Avoid __hvm_copy() raising #PF behind the emulators back

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 28.11.16 at 12:13, <andrew.cooper3@xxxxxxxxxx> wrote:
> @@ -3012,7 +3018,10 @@ void hvm_task_switch(
>                                        &tss.back_link, sizeof(tss.back_link), 
> 0,
>                                        &pfinfo);
>          if ( rc == HVMCOPY_bad_gva_to_gfn )
> +        {
> +            hvm_inject_page_fault(pfinfo.ec, pfinfo.linear);
>              exn_raised = 1;
> +        }
>          else if ( rc != HVMCOPY_okay )
>              goto out;
>      }

There's another one a few lines down from here (storing the error
code on the stack). Or did an earlier patch replace this, and I didn't
notice?

Jan


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