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 for <linuxppc-dev@lists.ozlabs.org>; Mon,  8 Jan 2018 19:17:12 +1100 (AEDT)
Subject: Spectre+Meltdown
To: Michal Suchanek <hramrach@gmail.com>, Olof Johansson <olof@lixom.net>
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
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From: Christian Zigotzky <chzigotzky@xenosoft.de>
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Date: Mon, 8 Jan 2018 09:17:05 +0100
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Hi All,

Thanks a lot for your replies.

@NXP developers: Could you please tell us some information?

Thanks,
Christian


On 08 January 2018 at 02:14AM, Michal Suchanek wrote:
> On 7 January 2018 at 19:54, Olof Johansson <olof@lixom.net> wrote:
>> On Sun, Jan 7, 2018 at 5:04 AM, Christian Zigotzky
>> <chzigotzky@xenosoft.de> wrote:
>>> Hello Michael,
>>>
>>> Thanks for your reply. We are using P.A. Semi and Freescale CPUs.
>>>
>>> @Olof
>>> Do you have some infos for us?
>> I'm low on spare time to experiment and explore what might be exposed
>> or not, and I no longer have any proprietary microarchitecture
>> documentation of the core.
>>
>> I suggest reaching out to your supplier of the silicon for commercial
>> support and information, or just going with what I'm sure will be
>> architecturally generic solutions to the problem when IBM has them
>> ready.
> The solution for IBM POWER involves patching the firmware as well as
> Linux. Without knowledge of the architecture specifics it is not
> possible to tell if other cores are affected and if the measures
> implemented by IBM can be used. In fact they probably rely on
> 64s-specific instructions and are in part implemented in 64s-specific
> assembly files.
>
> So this will not work without support for the specific core either by
> the vendor or somebody who has knowledge of the architecture details.
>
> Thanks
>
> Michal
>