tree 1c57a7aab12f423b43c83702f8b8e42c731e4042
parent bff3aac854e533d1e86592ac3bfab6eb4734eee1
author Claudio Imbrenda <imbrenda@linux.ibm.com> 1713438100 +0200
committer Nico Boehr <nrb@linux.ibm.com> 1713877835 +0200

lib: s390: fix guest length in uv_create_guest()

The current code creates secure guests with significantly more memory
than expected, but since none of that memory is ever touched,
everything still works.

Fix the issue by specifying the actual guest length.

The MSL does not contain the length of the guest, but the address of
the last 1M block of guest memory. In order to get the length, MSO
needs to be subtracted, and 1M needs to be added.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
Link: https://lore.kernel.org/r/20240418110140.62406-1-imbrenda@linux.ibm.com
Signed-off-by: Nico Boehr <nrb@linux.ibm.com>