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Date: Sun, 21 Nov 2004 12:01:34 +0100
From: Piotras <piotras@gmail.com>
Subject: Re: [Qemu-devel] Qemu code copy
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To: qemu-devel@nongnu.org

Hi!

Code copy works by executing original code blocks (no translation 
is performed) when possible. If the block contains memory access 
instruction, it can be executed in code-copy mode only when virtual 
memory of emulated CPU is visible as qemu process virtual memory. 
This is what qemu-fast does with mmap.

I think that in practice nearly all code blocks contain memory access 
instructions. If so, it's not worth to enable code-copy for qemu-soft.

Probably it's possible to build simple code translator that would 
translate only memory access instructions and execute most of 
the other instructions natively.


Regards,

Piotrek

On Fri, 19 Nov 2004 22:20:05 -0800, Shivkumar Shivaji
<shivdev@chesstrain.com> wrote:
> Is there anything preventing qemu regular (not qemu-fast) from using
> code-copy? Currently, code copy only works on hard mmu. Is there a way
> to enable it on the regular qemu?