Re: [Qemu-devel] Adding a custom monitoring device to virt machine

[Stefan Hajnoczi]

On Tue, Aug 23, 2016 at 07:31:53AM +0000, Nassim Corteggiani wrote:
> Hi all,
> 
> 
> This is the first time I am playing with QEmu.
> 
> 
> I made a custom qemu device in oder to monitor all memory accesses (sdram, 
> flash, peripherals, gpio, ...).
> 
> 
> The device is parent of TYPE_SYS_BUS_DEVICE and implements a MemoryRegionOps 
> with read/write functions.
> 
> 
> The device is part of virt machine, so I called my device contructor from 
> virt.c (fct machvirt_init line 1256).
> 
> The constructor set the mmio device range from 0 to RAMLIMIT_BYTES.
> 
> 
> The device is well initialized but read/write functions are never called...
> 
> 
> Did I miss something ?
> 
> 
> If I want to create a dynamically allocated device that can be used by all 
> QEmu machine without adding the device constructor for each machine, how can 
> I process ?

That's probably not the way to go about monitoring memory accesses.

What are you trying to do?

Stefan

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