[Skiboot] NX crypto on POWER9
hbabu at us.ibm.com
Tue Mar 9 05:39:55 AEDT 2021
NX crypto is not enabled and supported on P9 due to performance issues.
Instead use SW instructions.
George Wilson can give more information.
"Klaus Heinrich Kiwi" <klaus at linux.vnet.ibm.com> wrote on 03/08/2021
> From: "Klaus Heinrich Kiwi" <klaus at linux.vnet.ibm.com>
> To: skiboot at lists.ozlabs.org, Haren Myneni/Beaverton/IBM at IBM
> Date: 03/08/2021 05:05 AM
> Subject: Re: [Skiboot] NX crypto on POWER9
> do you have any insights here? Is there any public documentation
> that can be used?
> On 3/5/2021 3:46 AM, Stewart Smith wrote:
> > On Thu, Mar 4, 2021, at 6:14 PM, Léo Le Bouter wrote:
> >> Following https://github.com/open-power/hostboot/issues/196
> >> Bdragon on #talos-workstation found out that they are not enabled in
> >> skiboot here:
> >> https://github.com/open-power/skiboot/blob/master/hw/nx-crypto.c#L269
> >> From their investigations it looks like the engines are working in
> >> hardware just not fully configured and wired up in software.
> >> How could we get them enabled?
> >> Next step then would be to wire it up in the Linux kernel so dm-crypt
> >> can then use it.
> > Likely needs hardware documentation on that part of the NX unit,
> so that any configuration needing to happen in skiboot can be done,
> and any configuration needed can be passed onto the kernel.
> > I'm not sure if this documentation is public though.
> > _______________________________________________
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> Klaus Heinrich Kiwi <klaus at linux.vnet.ibm.com>
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