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Haren Myneni 2147783d6b powerpc/pseries: Use lparcfg to reconfig VAS windows for DLPAR CPU 
The hypervisor assigns VAS (Virtual Accelerator Switchboard)
windows depends on cores configured in LPAR. The kernel uses
OF reconfig notifier to reconfig VAS windows for DLPAR CPU event.
In the case of shared CPU mode partition, the hypervisor assigns
VAS windows depends on CPU entitled capacity, not based on vcpus.
When the user changes CPU entitled capacity for the partition,
drmgr uses /proc/ppc64/lparcfg interface to notify the kernel.

This patch adds the following changes to update VAS resources
for shared mode:
- Call vas reconfig windows from lparcfg_write()
- Ignore reconfig changes in the VAS notifier

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
[mpe: Rework error handling, report any errors as EIO]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/efa9c16e4a78dda4567a16f13dabfd73cb4674a2.camel@linux.ibm.com
2022-10-18 22:46:18 +11:00
..
cc_platform.c powerpc/pseries/svm: Add a powerpc version of cc_platform_has() 2021-10-04 11:46:33 +02:00
cmm.c mm: Convert all PageMovable users to movable_operations 2022-08-02 12:34:03 -04:00
dlpar.c powerpc: Remove asm/prom.h from all files that don't need it 2022-05-08 22:15:04 +10:00
dtl.c powerpc/pseries: Fix CONFIG_DTL=n build 2022-10-13 22:30:07 +11:00
eeh_pseries.c powerpc: Fix all occurences of duplicate words 2022-07-25 12:05:15 +10:00
event_sources.c powerpc/pseries: Add __init attribute to eligible functions 2021-12-23 22:33:15 +11:00
firmware.c powerpc/pseries: add FW_FEATURE_WATCHDOG flag 2022-07-20 21:57:39 +10:00
hotplug-cpu.c powerpc/pseries: Add missing of_node_put()s in hotplug-cpu.c 2022-09-05 17:30:24 +10:00
hotplug-memory.c powerpc: Remove asm/prom.h from all files that don't need it 2022-05-08 22:15:04 +10:00
hvCall_inst.c powerpc/pseries: Make symbol '__pcpu_scope_hcall_stats' static 2021-04-14 23:04:17 +10:00
hvCall.S powerpc/pseries: move hcall_tracepoint_refcount out of .toc 2022-09-26 20:57:42 +10:00
hvconsole.c
hvcserver.c powerpc: move from strlcpy with unused retval to strscpy 2022-08-26 11:02:20 +10:00
ibmebus.c powerpc/pseries: Add missing of_node_put() in ibmebus 2022-09-05 17:28:26 +10:00
io_event_irq.c
iommu.c pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window 2022-07-28 16:22:13 +10:00
Kconfig powerpc/pseries: Implement CONFIG_PARAVIRT_TIME_ACCOUNTING 2022-09-05 14:14:02 +10:00
kexec.c powerpc: Don't include asm/setup.h in asm/machdep.h 2022-06-20 11:29:49 +10:00
lpar.c powerpc/pseries: Implement CONFIG_PARAVIRT_TIME_ACCOUNTING 2022-09-05 14:14:02 +10:00
lparcfg.c powerpc/pseries: Use lparcfg to reconfig VAS windows for DLPAR CPU 2022-10-18 22:46:18 +11:00
Makefile powerpc/pseries: Fix CONFIG_DTL=n build 2022-10-13 22:30:07 +11:00
mobility.c powerpc/pseries: Move vas_migration_handler early during migration 2022-09-28 19:22:12 +10:00
msi.c powerpc: Add missing headers 2022-05-08 22:15:40 +10:00
nvram.c powerpc: Add missing headers 2022-05-08 22:15:40 +10:00
of_helpers.c powerpc/pseries: Fix of_read_drc_info_cell() to point at next record 2020-03-25 12:06:43 +11:00
of_helpers.h
papr_platform_attributes.c powerpc: Include asm/firmware.h in all users of firmware_has_feature() 2022-06-29 16:45:05 +10:00
papr_scm.c powerpc/papr_scm: Ensure rc is always initialized in papr_scm_pmu_register() 2022-09-02 18:55:11 +10:00
pci_dlpar.c powerpc/pseries: Fix use after free in remove_phb_dynamic() 2022-03-21 13:17:47 +11:00
pci.c powerpc: Remove asm/prom.h from all files that don't need it 2022-05-08 22:15:04 +10:00
plpks.c powerpc/pseries: Fix plpks crash on non-pseries 2022-09-08 10:45:57 +10:00
plpks.h powerpc/pseries: define driver for Platform KeyStore 2022-07-28 16:22:13 +10:00
pmem.c powerpc: Remove asm/prom.h from all files that don't need it 2022-05-08 22:15:04 +10:00
power.c powerpc: declare unmodified attribute_group usages const 2022-03-08 22:15:32 +11:00
pseries_energy.c powerpc/pseries: Fix drc-info mappings of logical cpus to drc-index 2019-11-13 16:57:57 +11:00
pseries.h powerpc/pseries: wire up rng during setup_arch() 2022-06-18 10:19:10 +10:00
ras.c powerpc/mce: Avoid using irq_work_queue() in realmode 2022-03-08 00:05:00 +11:00
reconfig.c powerpc/pseries: block untrusted device tree changes when locked down 2022-09-28 19:22:14 +10:00
rng.c powerpc/pseries: wire up rng during setup_arch() 2022-06-18 10:19:10 +10:00
rtas-fadump.c powerpc: Add missing headers 2022-05-08 22:15:40 +10:00
rtas-fadump.h powerpc/fadump: support holes in kernel boot memory area 2019-09-14 00:04:46 +10:00
setup.c powerpc/pseries: Add firmware details to the hardware description 2022-09-30 18:35:53 +10:00
smp.c powerpc: Remove asm/prom.h from all files that don't need it 2022-05-08 22:15:04 +10:00
suspend.c powerpc/pseries/hibernation: remove prepare_late() callback 2020-12-08 21:41:02 +11:00
svm.c swiotlb: add a SWIOTLB_ANY flag to lift the low memory restriction 2022-04-18 07:21:12 +02:00
vas-sysfs.c powerpc/pseries/vas: Call misc_deregister if sysfs init fails 2022-05-22 15:58:31 +10:00
vas.c powerpc/pseries: Use lparcfg to reconfig VAS windows for DLPAR CPU 2022-10-18 22:46:18 +11:00
vas.h powerpc/pseries: Use lparcfg to reconfig VAS windows for DLPAR CPU 2022-10-18 22:46:18 +11:00
vio.c powerpc: Add missing headers 2022-05-08 22:15:40 +10:00
vphn.c powerpc/vphn: Check for error from hcall_vphn 2020-03-04 22:44:30 +11:00