[PATCH v4 16/16] crypto/nx: Add sysfs interface to export NX capabilities

[Haren Myneni]

On Fri, 2021-06-04 at 21:52 +1000, Michael Ellerman wrote:
> Haren Myneni <haren at linux.ibm.com> writes:
> > On Thu, 2021-06-03 at 14:57 +1000, Nicholas Piggin wrote:
> > > Excerpts from Haren Myneni's message of May 21, 2021 7:42 pm:
> > > > Changes to export the following NXGZIP capabilities through
> > > > sysfs:
> > > > 
> > > > /sys/devices/vio/ibm,compression-v1/NxGzCaps:
> > > 
> > > Where's the horrible camel case name coming from? PowerVM?
> > 
> > Yes, pHyp provides the capabalities string.
> > 
> > Capability Description Descriptor Value Descriptor ascii Value
> > Overall NX Capabilities 0x4E78204361707320 “Nx Caps ”
> > NX GZIP Capabilities 0x4E78477A43617073 “NxGzCaps”
> 
> That doesn't mean we have to use that name in sysfs though. In fact
> we
> couldn't use the "Nx Caps " name, because it contains spaces.
> 
> And we don't have to squeeze our name into 8 bytes, so it can be less
> ugly.
> 
> Like "nx_gzip_capabilities"?

Thanks for your comments. 

'NX Caps " provides the all available features in the hypervisor (only
NX GZIP caps is supported right now) and we export information for the
specific feature via sysfs.

I will change it to "nx_gzip_caps" 

Thanks
Haren

> 
> cheers