Re: [Qemu-devel] [RFC PATCH 0/3] (Resend) TranslationBlock annotation mechanism

[Bastian Koppelmann]

Hi Lluis,

On 01/27/2016 07:54 PM, Lluís Vilanova wrote:
> There is this modified version I wrote [1], which precisely provides a plugin
> infrastructure to attach callbacks into guest code events (a binary
> instrumentation framework based on QEMU). At the time, the discussion resolved
> that a full code instrumentation interface for plugins was too much code that
> regular QEMU users & developers would not care about, easily leading to 
> bitrot.
> 

This is too bad but looking at the discussion back then the
argumentation is reasonable since an instrumentation API would and
should touch everything in QEMU.

> Instead, the list resolved (AFAIU) that it would be better to mainstream 
> support
> for guest code events, and make instrumentation an unofficial extension. I've
> been (slowly) working to separate both pieces, making instrumentation a QEMU
> patch that can be easily maintained out of tree.
> 
> The last patch series I sent sets the final stone on the core infrastructure 
> for
> the mainline part, just missing the patches I have queued to start adding 
> guest
> code trace events.

Can you give me the name of the series.

> 
> So, I'd say that such support is on the list of current developments (at least
> mine, specially now that I have a bit more time for it). But getting the core
> infrastructure mainlined takes some time to ensure it makes sense and can be
> easily maintained and be generally usefull to vanilla QEMU.
> 

For us such a API would make a lot of sense and there is no benefit for
us to do our own API. Would it make sense for you if we helped you?

Cheers,
Bastian