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[Qemu-devel] 4GB/4GB split

From: Fabrice Bellard
Subject: [Qemu-devel] 4GB/4GB split
Date: Thu, 10 Jul 2003 17:30:05 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020408


I just saw the announce of Ingo Molnar about his patch for 4GB/4GB
kernel split. This patch is mostly what I was dreaming in order to have optimal performances in QEMU : no guest kernel patches will be necessary and no software MMU will be necessary.

I hope that some of the kernel gurus reading this list will tell Ingo that his patch may be useful also for people having less than 4GB of RAM :-)

Ideally, he should add a feature to activate the 4GB/4GB on demand (if the user process maps data above 0xc0000000) and he should also be able to move dynamically the trampoline page if the user process tries to map something at its address.


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