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

  • To: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
  • From: Aravindh Puthiyaparambil <aravindh@xxxxxxxxxxxx>
  • Date: Fri, 27 May 2011 09:36:32 -0700
  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Fri, 27 May 2011 18:39:13 -0700
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Can this be included in xen-4.1-testing.hg too so that it could make the Xen 4.1.1 cut?


On May 27, 2011 1:39 AM, "Tim Deegan" <Tim.Deegan@xxxxxxxxxx> wrote:
> 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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