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Nathan Lynch c035dcae0b powerpc/pseries/dlpar: handle ibm, configure-connector delay status 
[ Upstream commit 768d70e19ba525debd571b36e6d0ab19956c63d7 ]

dlpar_configure_connector() has two problems in its handling of
ibm,configure-connector's return status:

1. When the status is -2 (busy, call again), we call
   ibm,configure-connector again immediately without checking whether
   to schedule, which can result in monopolizing the CPU.
2. Extended delay status (9900..9905) goes completely unhandled,
   causing the configuration to unnecessarily terminate.

Fix both of these issues by using rtas_busy_delay().

Fixes: ab519a011c ("powerpc/pseries: Kernel DLPAR Infrastructure")
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210107025900.410369-1-nathanl@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:38:04 +01:00
..
boot powerpc/boot: Fix build of dts/fsl 2020-12-30 11:54:01 +01:00
configs powerpc updates for 5.10 2020-10-16 12:21:15 -07:00
crypto
include powerpc/64s: fix scv entry fallback flush vs interrupt 2021-01-27 11:55:12 +01:00
kernel powerpc/time: Enable sched clock for irqtime 2021-03-04 11:38:01 +01:00
kexec arch, drivers: replace for_each_membock() with for_each_mem_range() 2020-10-13 18:38:35 -07:00
kvm KVM: PPC: Make the VMX instruction emulation routines static 2021-03-04 11:38:01 +01:00
lib powerpc/64s: fix scv entry fallback flush vs interrupt 2021-01-27 11:55:12 +01:00
math-emu
mm powerpc/mm: Fix verification of MMU_FTR_TYPE_44x 2020-12-30 11:54:16 +01:00
net
oprofile
perf powerpc/perf: Exclude kernel samples while counting events in user space. 2020-12-30 11:54:10 +01:00
platforms powerpc/pseries/dlpar: handle ibm, configure-connector delay status 2021-03-04 11:38:04 +01:00
purgatory
sysdev powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() 2021-01-06 14:56:53 +01:00
tools
xmon powerpc/xmon: Change printk() to pr_cont() 2020-12-30 11:54:16 +01:00
Kbuild
Kconfig powerpc/47x: Disable 256k page size 2021-03-04 11:38:01 +01:00
Kconfig.debug
Makefile Kbuild fixes for v5.10 (2nd) 2020-12-06 10:31:39 -08:00
Makefile.postlink