Re: [Xen-devel] [PATCH] mem_event: Allow memory access listener to perform single step execution

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

At 04:39 +0100 on 27 May (1306471145), Aravindh Puthiyaparambil wrote:
> mem_event: Allow memory access listener to perform single step execution.
> Add a new memory event that handles single step. This allows the memory 
> access listener to handle instructions that modify data within the execution 
> page.
> This can be enabled in the listener by doing:
> xc_set_hvm_param(xch, domain_id, HVM_PARAM_MEMORY_EVENT_SINGLE_STEP, 
> HVMPME_mode_sync)
> 
> Now the listener can start single stepping by:
> xc_domain_debug_control(xch, domain_id, XEN_DOMCTL_DEBUG_OP_SINGLE_STEP_ON, 
> vcpu_id)
> 
> And stop single stepping by:
> xc_domain_debug_control(xch, domain_id, XEN_DOMCTL_DEBUG_OP_SINGLE_STEP_OFF, 
> vcpu_id)
> 
> Signed-off-by: Aravindh Puthiyaparambil <aravindh@xxxxxxxxxxxx>

Acked-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

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