Searched hist:aab99135b63522267c6fdae04712cb2f02c8c7de (Results 1 – 2 of 2) sorted by relevance
| /openbmc/qemu/include/hw/ppc/ |
| H A D | spapr_drc.h | diff aab99135b63522267c6fdae04712cb2f02c8c7de Wed May 11 22:48:21 CDT 2016 Bharata B Rao <bharata@linux.vnet.ibm.com> spapr_drc: Prevent detach racing against attach for CPU DR
If a CPU is hot removed while hotplug of the same is still in progress,
the guest crashes. Prevent this by ensuring that detach is done only
after attach has completed.
The existing code already prevents such race for PCI hotplug. However
given that CPU is a logical DR unlike PCI and starts with ISOLATED
state, we need a logic that works for CPU too.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
[Don't set awaiting_attach for PCI devices]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
|
| /openbmc/qemu/hw/ppc/ |
| H A D | spapr_drc.c | diff aab99135b63522267c6fdae04712cb2f02c8c7de Wed May 11 22:48:21 CDT 2016 Bharata B Rao <bharata@linux.vnet.ibm.com> spapr_drc: Prevent detach racing against attach for CPU DR
If a CPU is hot removed while hotplug of the same is still in progress,
the guest crashes. Prevent this by ensuring that detach is done only
after attach has completed.
The existing code already prevents such race for PCI hotplug. However
given that CPU is a logical DR unlike PCI and starts with ISOLATED
state, we need a logic that works for CPU too.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
[Don't set awaiting_attach for PCI devices]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
|