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Re: [Qemu-ppc] [OpenBIOS] Running client with MMU off

From: BALATON Zoltan
Subject: Re: [Qemu-ppc] [OpenBIOS] Running client with MMU off
Date: Thu, 26 Jun 2014 14:03:47 +0200 (CEST)
User-agent: Alpine 2.02 (LMD 1266 2009-07-14)

On Thu, 26 Jun 2014, Alexander Graf wrote:
I don't think any other OS really accesses these ranges, but only time will tell ;).

Don't know, according to previous replies they may. Then how about always clearing the translation for page zero the next time our handler is called so I always get a new exception when it's accessed? (I have to add it for the access to succeed but I may remove it at the next possible occasion.) In the lack of a better idea I'll try this.

That sounds odd. Why don't you just implement a tiny instruction emulator? We only need to catch stores here, no?

I assume yes but I'm not sure and I don't know how to do that. Do you know about an example somewhere?


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