Comment 3 for bug 1962831

Some stats in the changes:

patches.tar.gz:
 Documentation/virt/kvm/api.txt | 2
 arch/s390/include/asm/uaccess.h | 26 +
 arch/s390/kvm/gaccess.c | 424 +++++++++++++++++-----
 arch/s390/kvm/gaccess.h | 9
 arch/s390/kvm/kvm-s390.c | 134 +++++-
 arch/s390/lib/uaccess.c | 82 +++-
 b/Documentation/virt/kvm/api.txt | 127 ++++--
 b/arch/s390/include/asm/ctl_reg.h | 2
 b/arch/s390/include/asm/page.h | 2
 b/arch/s390/include/asm/uaccess.h | 122 +++---
 b/arch/s390/kvm/gaccess.c | 32 -
 b/arch/s390/kvm/gaccess.h | 77 +++
 b/arch/s390/kvm/intercept.c | 12
 b/arch/s390/kvm/kvm-s390.c | 4
 b/arch/s390/kvm/priv.c | 66 +--
 b/arch/s390/lib/uaccess.c | 26 +
 b/include/uapi/linux/kvm.h | 6
 b/tools/testing/selftests/kvm/.gitignore | 1
 b/tools/testing/selftests/kvm/Makefile | 1
 b/tools/testing/selftests/kvm/include/kvm_util.h | 1
 b/tools/testing/selftests/kvm/include/test_util.h | 3
 b/tools/testing/selftests/kvm/lib/kvm_util.c | 7
 b/tools/testing/selftests/kvm/s390x/tprot.c | 228 +++++++++++
 include/uapi/linux/kvm.h | 5
 tools/testing/selftests/kvm/include/kvm_util.h | 25 +
 25 files changed, 1145 insertions(+), 279 deletions(-)