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List:       qemu-discuss
Subject:    Modification to single Threaded Multi-Core emulation in TCG
From:       Arnabjyoti Kalita <akalita () cs ! stonybrook ! edu>
Date:       2021-12-23 4:56:30
Message-ID: CAJGDS+FsxhTRzohkkbqFGLFXA2sHkoAEB_yJXm4V6Vr5D0vDag () mail ! gmail ! com
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Hello all,

I have a requirement to use the single-threaded implementation of
multi-core emulation in TCG. This schedules the multiple cores in a
round robin fashion from what I understand, at the end of a set timer
interval.

I want to make a modification to this approach. I would like to
schedule the vCPUs in a round-robin fashion but at the end of every
Translation Block (TB)'s execution.  So, instead of having a timer to
switch the vCPU, I would like to forcefully switch the vCPU when a
translation block has been executed.

What would be the best way to implement this approach? Do I need to
raise an interrupt at the end of the execution of every TB ? Where in
code should I start making changes ? I do not want the functionality
of the original TCG execution driver to change.

Best Regards,
Arnabjyoti Kalita

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