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| author | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2020-05-08 18:28:43 -0400 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2020-05-21 13:01:45 -0500 |
| commit | c54b071c192dfe8061336f650ceaf358e6386e0b (patch) | |
| tree | 27b3c225e7d9b5c9a07f11607aa11f8a06fd592e /include/linux/fpga/fpga-region.h | |
| parent | c17db64044e34ae6c2df56cc4837787f9d48edd5 (diff) | |
xen/cpuhotplug: Fix initial CPU offlining for PV(H) guests
Commit a926f81d2f6c ("xen/cpuhotplug: Replace cpu_up/down() with
device_online/offline()") replaced cpu_down() with device_offline()
call which requires that the CPU has been registered before. This
registration, however, happens later from topology_init() which
is called as subsys_initcall(). setup_vcpu_hotplug_event(), on the
other hand, is invoked earlier, during arch_initcall().
As result, booting a PV(H) guest with vcpus < maxvcpus causes a crash.
Move setup_vcpu_hotplug_event() (and therefore setup_cpu_watcher()) to
late_initcall(). In addition, instead of performing all offlining steps
in setup_cpu_watcher() simply call disable_hotplug_cpu().
Fixes: a926f81d2f6c (xen/cpuhotplug: Replace cpu_up/down() with device_online/offline()"
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/1588976923-3667-1-git-send-email-boris.ostrovsky@oracle.com
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'include/linux/fpga/fpga-region.h')
0 files changed, 0 insertions, 0 deletions