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[Qemu-devel] TCG multithread plan.
From: |
Frederic Konrad |
Subject: |
[Qemu-devel] TCG multithread plan. |
Date: |
Mon, 08 Dec 2014 15:47:38 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
Hi everybody,
Here is the plan we will follow:
We will be focusing - from the outset - on the end goal of multi-threaded TCG
in full system emulation mode. On the way, we expect this will ‘fix’ user mode.
The plan is:
* Create one cache per CPU as a first step. We can do more next and share a
cache.
* Update tb_* to add a pointer to their cache.
* Add atomic instruction support to the TGC (first on ARM).
* Make tb_invalidate work between all cache.
* Modify main-loop for multi-thread.
* Memory access (eg: for device) are not thread safe that need to be fixed.
Initial plan simply globally mutex memory accesses - this may be optimised
later.
* For now, irq handler for CPU seems ok but we need to check.
We will discuss this during the call tomorrow.
Thanks,
Fred
- [Qemu-devel] TCG multithread plan.,
Frederic Konrad <=