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Re: [Qemu-ppc] [PATCH 11/15] ppc: Add 460EX embedded CPU

From: BALATON Zoltan
Subject: Re: [Qemu-ppc] [PATCH 11/15] ppc: Add 460EX embedded CPU
Date: Wed, 23 Aug 2017 11:08:16 +0200 (CEST)
User-agent: Alpine 2.21 (BSF 202 2017-01-01)

On Wed, 23 Aug 2017, David Gibson wrote:
On Sun, Aug 20, 2017 at 07:23:05PM +0200, BALATON Zoltan wrote:
Despite its name it is a 440 core CPU

As I recall 460 was supposed to be a 440 with SMP support.  Except
they screwed up the cache coherence, so it's basically unusable for
SMP (at least with Linux).  They finally got 440 SMP right in 470

Or are you saying that the 460EX is more 440 like than other 460 cpus?

AFAIK this SoC really has a 440 core with some of the embedded devices (such as PCIe and SDRAM controller) similar to real 460 core SoCs, so its name is a bit misleading. It definitely does not have a 460 CPU core so it's more like 440 than other 460 core SoCs.

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