| Subject | Re: [PATCH 7/7] ocxl: Document new OCXL IOCTLs | From | Andrew Donnellan <> | Date | Tue, 17 Apr 2018 13:45:20 +1000 |
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On 17/04/18 12:09, Alastair D'Silva wrote: > From: Alastair D'Silva <alastair@d-silva.org> > > Signed-off-by: Alastair D'Silva <alastair@d-silva.org> > --- > Documentation/accelerators/ocxl.rst | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/Documentation/accelerators/ocxl.rst b/Documentation/accelerators/ocxl.rst > index ddcc58d01cfb..144595a80a1c 100644 > --- a/Documentation/accelerators/ocxl.rst > +++ b/Documentation/accelerators/ocxl.rst > @@ -157,6 +157,16 @@ OCXL_IOCTL_GET_METADATA: > Obtains configuration information from the card, such at the size of > MMIO areas, the AFU version, and the PASID for the current context. > > +OCXL_IOCTL_ENABLE_P9_WAIT: > + > + Allows the AFU to wake a userspace thread executing 'wait'. Returns > + information to userspace to allow it to configure the AFU.
Note that this is only available on POWER9.
> + > +OCXL_IOCTL_GET_PLATFORM: > + > + Notifies userspace as to the platform the kernel believes we are on, > + which may differ from what userspace believes. Also reports on which CPU > + features which are usable from userspace.
The first sentence here doesn't seem to relate to anything that GET_PLATFORM actually does - afaict you're just passing flags which I suppose imply what the correct platform is, but really they're just feature flags?
-- Andrew Donnellan OzLabs, ADL Canberra andrew.donnellan@au1.ibm.com IBM Australia Limited
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