This update for xen fixes the following issues:

Security issues fixed:

- CVE-2020-11742: Bad continuation handling in GNTTABOP_copy (bsc#1169392).
- CVE-2020-11740, CVE-2020-11741: xen: XSA-313 multiple xenoprof issues (bsc#1168140).
- CVE-2020-11739: Missing memory barriers in read-write unlock paths (bsc#1168142).
- CVE-2020-11743: Bad error path in GNTTABOP_map_grant (bsc#1168143).
- arm: a CPU may speculate past the ERET instruction (bsc#1160932).

Non-security issues fixed:

- Xenstored Crashed during VM install (bsc#1167152)
- DomU hang: soft lockup CPU #0 stuck under high load (bsc#1165206, bsc#1134506)
- Update API compatibility versions, fixes issues for libvirt. (bsc#1167007, bsc#1157490)
- aacraid blocks xen commands (bsc#1155200)

This update was imported from the SUSE:SLE-15-SP1:Update update project.