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| /openbmc/linux/drivers/s390/cio/ |
| H A D | vfio_ccw_cp.c | diff 61783394f4eb3a8a0944005ea2761c011788a9c3 Fri Oct 21 10:02:48 CDT 2022 Eric Farman <farman@linux.ibm.com> vfio/ccw: populate page_array struct inline
There are two possible ways the list of addresses that get passed
to vfio are calculated. One is from a guest IDAL, which would be
an array of (probably) non-contiguous addresses. The other is
built from contiguous pages that follow the starting address
provided by ccw->cda.
page_array_alloc() attempts to simplify things by pre-populating
this array from the starting address, but that's not needed for
a CCW with an IDAL anyway so doesn't need to be in the allocator.
Move it to the caller in the non-IDAL case, since it will be
overwritten when reading the guest IDAL.
Remove the initialization of the pa_page output pointers,
since it won't be explicitly needed for either case.
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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