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Re: [Qemu-devel] [PATCH 0/3] ppc: complete the new HV mode

From: Mark Cave-Ayland
Subject: Re: [Qemu-devel] [PATCH 0/3] ppc: complete the new HV mode
Date: Fri, 3 Jun 2016 14:52:33 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.8.0

On 03/06/16 13:11, Cédric Le Goater wrote:

> This is follow up to complete the serie "ppc: preparing pnv landing
> (round 2)" plus a little fix on instruction privileges.
> Tested on a POWER8 pserie guest and on mac99.
> Benjamin Herrenschmidt (2):
>   ppc: Fix hreg_store_msr() so that non-HV mode cannot alter MSR:HV
>   ppc: Better figure out if processor has HV mode
> Cédric Le Goater (1):
>   ppc: fix hrfid, tlbia and slbia privilege
>  target-ppc/cpu.h            |  4 ++++
>  target-ppc/excp_helper.c    |  8 ++++++--
>  target-ppc/helper_regs.h    |  4 ++--
>  target-ppc/translate.c      | 10 ++++++----
>  target-ppc/translate_init.c | 19 +++++++++++++++----
>  5 files changed, 33 insertions(+), 12 deletions(-)

Hi Cédric,

I can confirm that this patchset fixes starting up OpenBIOS for both
g3beige/mac99 in my tests here. With the escc fix also applied, the only
outstanding issue is the removal of the tlb_flush() statements which
causes Darwin, MacOS X and HelenOS 0.60 to panic on boot

My only request is if it would be possible to move patch 2 "ppc: Better
figure out if processor has HV mode" to the front of this patchset which
will make the remaining patches bisectable for the Mac machines. With that:

Tested-by: Mark Cave-Ayland <address@hidden>

Does anyone know if Ben has any ideas as to why the MMU tlb_flush
changes patch is causing such problems?



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