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Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/10] ppc: Fix rfi/rfid/hrfi/... emu

From: Benjamin Herrenschmidt
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/10] ppc: Fix rfi/rfid/hrfi/... emulation
Date: Sun, 19 Jun 2016 09:35:10 +1000

On Fri, 2016-06-17 at 16:32 +0200, Cédric Le Goater wrote:
> The instruction set PPC_POWER_BR contains nearly all the deleted 
> instructions from isa2. rfi is not part of it and should. Also, only 
> the cpus "PowerPC 601*" make a use of it in their insns_flags.

Are you sure those arent the old POWER instructions as in pre-powerPC
architecture that 601 (and only 601) supports ?

> So, we would want this set to be in all the "PowerPC {6,7}*" cpus. 
> Are there more ? 

All 32-bit hash based CPUs are arch 1.x and support rfi

All 64-bit hash based CPUs we support (ie, POWER4 and later) are
architecture 2.x and later.

So my test is correct in the context of what we emulate today.


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