[PATCH 0/1][Bionic][Artful] fix boot panic on old Xen hypervisors

[Kamal Mostafa]

BugLink: http://bugs.launchpad.net/bugs/1771679

[Impact]

Older versions of Xen hypervisor cause Bionic and Artful guests to panic
at boot in '__xen_evtchn_do_upcall', as observed in AWS region cn-north-1
running Xen version 3.4.

[Test Case]

Attempt to launch an m1.small instance in AWS region cn-north-1.

[Fix]

Cherry-pick from mainline.

[Regression Potential]

Low: Only affects Xen guests running kernel >= 4.13 on older Xen hosts.

Thanks,

 -Kamal

-------- >8 ----------------------------------------------------

van der Linden, Frank (1):
  x86/xen: Reset VCPU0 info pointer after shared_info remap

 arch/x86/xen/enlighten_hvm.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

-- 
2.7.4