The parameters for the diag 0x258 are real addresses, not virtual, but
KVM was using them as virtual addresses. This only happened to work, since
the Linux kernel as a guest used to have a 1:1 mapping for physical vs
virtual addresses.
In addition, add handling for guest addresses outside memslots in
access_guest_page() for architectural compliance and testability.
Michael Mueller (1):
KVM: s390: Change virtual to physical address access in diag 0x258
handler
Nico Boehr (1):
KVM: s390: gaccess: check if guest address is in memslot
arch/s390/kvm/diag.c | 2 +-
arch/s390/kvm/gaccess.c | 7 +++++++
arch/s390/kvm/gaccess.h | 14 ++++++++------
3 files changed, 16 insertions(+), 7 deletions(-)
--
2.46.0
