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

["Cédric Le Goater" <clg@kaod.org>]

Hello Mark,

On 06/03/2016 03:52 PM, Mark Cave-Ayland wrote:
> 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

Is that just booting the CDROM or the complete OS ? because I tried that a 
couple of time with ppc-for-2.7-20160531 + the three patches above and 
did not see the issue again. I reached the device selection prompt. 

I must be doing something wrong. 

> 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 <mark.cave-ayland@ilande.co.uk>

Thanks,

C. 

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