On 17/04/18 12:09, Alastair D'Silva wrote:
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
Documentation/accelerators/ocxl.rst | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
index ddcc58d01cfb..144595a80a1c 100644
@@ -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.
+ 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.
+ 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
Andrew Donnellan OzLabs, ADL Canberra
andrew.donnel...@au1.ibm.com IBM Australia Limited