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From: | Robert Reif |
Subject: | Re: [Qemu-devel] [5849] Change MMIO callbacks to use offsets, not absolute addresses. |
Date: | Mon, 23 Feb 2009 20:27:25 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.19) Gecko/20081204 SeaMonkey/1.1.14 |
Paul Brook wrote:
How do you propose having the hardware drivers generate meaningful and timely faults when an improper access is performed so it behaves like real low level software expects the hardware to behave?If you're wanting to generate faults from IO devices then getting the right physical address is the least of your concerns. First you need to figure out how to avoid corrupting the rest of the CPU state.Paul
The MMU does it so it must be possible. Is it a design issue, performance issue, just not worth the trouble or no one has really cared up until now? Please enlighten me further. Is it reasonable to expect it to work someday or should I just accept that it won't?
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