| commit | 14055ce53c2d901d826ffad7fb7d6bb8ab46bdfd | |
| author | David Hildenbrand <david@redhat.com> | |
| Wed, 27 Jun 2018 13:44:02 +0000 (27 15:44 +0200) | ||
| committer | Cornelia Huck <cohuck@redhat.com> | |
| Mon, 2 Jul 2018 08:37:38 +0000 (2 10:37 +0200) | ||
| tree | ea862f25f01811e86b14928bbcd00ed42a20940f | treesnapshot (tar.gz zip) |
| parent | 87273151110b7736b34ae3e37ad778c28c36d643 | commitdiff |
s390x/tcg: avoid overflows in time2tod/tod2time
Big values for the TOD/ns clock can result in some overflows that can be
avoided. Not all overflows can be handled however, as the conversion either
multiplies by 4.096 or divided by 4.096.
Apply the trick used in the Linux kernel in arch/s390/include/asm/timex.h
for tod_to_ns() and use the same trick also for the conversion in the
other direction.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180627134410.4901-2-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Big values for the TOD/ns clock can result in some overflows that can be
avoided. Not all overflows can be handled however, as the conversion either
multiplies by 4.096 or divided by 4.096.
Apply the trick used in the Linux kernel in arch/s390/include/asm/timex.h
for tod_to_ns() and use the same trick also for the conversion in the
other direction.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180627134410.4901-2-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| target/s390x/internal.h | diffblobblamehistory |