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[Qemu-devel] [PATCH] CONFIG_MMU_MAP powerpc host support

From: Magnus Damm
Subject: [Qemu-devel] [PATCH] CONFIG_MMU_MAP powerpc host support
Date: Mon, 20 Dec 2004 18:55:21 +0100


This patch adds powerpc host support to the CONFIG_MMU_MAP patch
written by Piotrek. My patch should be applied on top of
v1-part[1-3].patch.gz. I have only tested the code with a x86 guest on
a ppc host running Linux - someone, please test on a host running OSX.

Performance gain reported by nbench:

Memory index: 50%
Integer index: 44%
Fp index: 4%

Right now each map-memory access consists of 5-6 powerpc instructions.
If a direct pointer to mem_map could be kept in a register then we
would be down to 3-4 instructions per memoy access...

/ magnus

Attachment: qemu-mmap_20041217-ppc.patch
Description: Binary data

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