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Re: [PATCH] x86/traps: Fix typo in do_entry_CP()


  • To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Wed, 29 Sep 2021 10:07:43 +0200
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  • Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Bobby Eshleman <bobby.eshleman@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Wed, 29 Sep 2021 08:07:53 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 28.09.2021 23:00, Andrew Cooper wrote:
> The call to debugger_trap_entry() should pass the correct vector.  The
> break-for-gdbsx logic is in practice unreachable because PV guests can't
> generate #CP, but it will interfere with anyone inserting custom debugging
> into debugger_trap_entry().
> 
> Fixes: 5ad05b9c2490 ("x86/traps: Implement #CP handler and extend #PF for 
> shadow stacks")
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>




 


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