On Tue, 2022-12-20 at 18:16 +1100, Andrew Donnellan wrote:

A number of structures and buffers passed to PKS hcalls have
alignment
requirements, which could on occasion cause problems:

- Authorisation structures must be 16-byte aligned and must not cross
a
  page boundary

- Label structures must not cross page coundaries

- Password output buffers must not cross page boundaries

Round up the allocations of these structures/buffers to the next
power of
2 to make sure this happens.

Reported-by: Benjamin Gray <redacted>
Fixes: 2454a7af0f2a ("powerpc/pseries: define driver for Platform
KeyStore")
Signed-off-by: Andrew Donnellan <redacted>

Reviewed-by: Russell Currey <redacted>