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linux/arch/powerpc/platforms/pseries
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Vaibhav Jain 3a855b7ac7 powerpc/papr_scm: Force a scm-unbind if initial scm-bind fails 
In some cases initial bind of scm memory for an lpar can fail if
previously it wasn't released using a scm-unbind hcall. This situation
can arise due to panic of the previous kernel or forced lpar
fadump. In such cases the H_SCM_BIND_MEM return a H_OVERLAP error.

To mitigate such cases the patch updates papr_scm_probe() to force a
call to drc_pmem_unbind() in case the initial bind of scm memory fails
with EBUSY error. In case scm-bind operation again fails after the
forced scm-unbind then we follow the existing error path. We also
update drc_pmem_bind() to handle the H_OVERLAP error returned by phyp
and indicate it as a EBUSY error back to the caller.

Suggested-by: "Oliver O'Halloran" <oohall@gmail.com>
Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Reviewed-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190629160610.23402-4-vaibhav@linux.ibm.com
2019-07-22 23:31:00 +10:00
..
cmm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dlpar.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
dtl.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
eeh_pseries.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
event_sources.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
firmware.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hotplug-cpu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hotplug-memory.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
hvCall_inst.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hvCall.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hvconsole.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
hvcserver.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ibmebus.c bus_find_device: Unify the match callback with class_find_device 2019-06-24 05:22:31 +02:00
io_event_irq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
iommu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Kconfig powerpc/Kconfig: Clean up formatting 2019-07-04 16:55:10 +10:00
kexec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
lpar.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
lparcfg.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile powerpc/pseries: Move mm/book3s64/vphn.c under platforms/pseries/ 2019-07-04 22:23:38 +10:00
mobility.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
msi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
nvram.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
of_helpers.c pseries/drc-info: Search DRC properties for CPU indexes 2018-01-21 16:21:46 +11:00
of_helpers.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
offline_states.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
papr_scm.c powerpc/papr_scm: Force a scm-unbind if initial scm-bind fails 2019-07-22 23:31:00 +10:00
pci_dlpar.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pmem.c powerpc/pseries/pmem: Fix a set but not used value 2019-04-20 22:02:26 +10:00
power.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
pseries_energy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pseries.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ras.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
reconfig.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rng.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
scanlog.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
setup.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
smp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
suspend.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
vio.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
vphn.c powerpc/pseries: Move mm/book3s64/vphn.c under platforms/pseries/ 2019-07-04 22:23:38 +10:00