AuxXxilium/linux_dsm_epyc7002
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6ccb4ac2bf
linux_dsm_epyc7002/arch/powerpc/platforms/powernv
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Greg Kurz 6ccb4ac2bf powerpc/xive: Fix bogus error code returned by OPAL 
There's a bug in skiboot that causes the OPAL_XIVE_ALLOCATE_IRQ call
to return the 32-bit value 0xffffffff when OPAL has run out of IRQs.
Unfortunatelty, OPAL return values are signed 64-bit entities and
errors are supposed to be negative. If that happens, the linux code
confusingly treats 0xffffffff as a valid IRQ number and panics at some
point.

A fix was recently merged in skiboot:

e97391ae2bb5 ("xive: fix return value of opal_xive_allocate_irq()")

but we need a workaround anyway to support older skiboots already
in the field.

Internally convert 0xffffffff to OPAL_RESOURCE which is the usual error
returned upon resource exhaustion.

Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821713818.1985334.14123187368108582810.stgit@bahia.lan
2019-09-12 09:27:05 +10:00
..
copy-paste.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
eeh-powernv.c powernv/eeh: Use generic code to handle hot resets 2019-09-05 14:22:38 +10:00
idle.c powerpc/powernv: Access LDBAR only if ultravisor disabled 2019-08-30 09:40:16 +10:00
Kconfig powerpc/powernv: Move SCOM access code into powernv platform 2019-08-05 18:53:03 +10:00
Makefile Merge branch 'topic/ppc-kvm' into next 2019-08-30 09:52:57 +10:00
memtrace.c mm/memory_hotplug: rename walk_memory_range() and pass start+size instead of pfns 2019-07-18 17:08:06 -07:00
npu-dma.c powerpc/powernv: Remove unused pnv_npu_try_dma_set_bypass() function 2019-09-12 09:27:00 +10:00
ocxl.c ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action 2018-06-03 20:40:32 +10:00
opal-async.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-call.c powerpc/xive: Fix bogus error code returned by OPAL 2019-09-12 09:27:05 +10:00
opal-dump.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-elog.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-flash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-hmi.c powerpc/powernv: Show checkstop reason for NPU2 HMIs 2019-06-02 19:39:36 +10:00
opal-imc.c powerpc/imc: Dont create debugfs files for cpu-less nodes 2019-09-05 14:22:41 +10:00
opal-irqchip.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-kmsg.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-lpc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-memory-errors.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
opal-msglog.c powerpc/powernv/opal-msglog: Refactor memcons code 2019-08-30 09:40:16 +10:00
opal-nvram.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-power.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-powercap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-prd.c powerpc/powernv: Add new opal message type 2019-09-12 09:27:00 +10:00
opal-psr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-rtc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-sensor-groups.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-sensor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
opal-sysparam.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
opal-tracepoints.c jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
opal-wrappers.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
opal-xscom.c powerpc/powernv: Fix checkpatch warnings in opal-xscom.c 2019-08-05 18:53:03 +10:00
opal.c powerpc/powernv: Enhance opal message read interface 2019-09-12 09:27:00 +10:00
pci-cxl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pci-ioda-tce.c powerpc/powernv/ioda2: Allocate TCE table levels on demand for default DMA window 2019-08-19 13:20:23 +10:00
pci-ioda.c Merge branch 'topic/ppc-kvm' into next 2019-08-30 09:52:57 +10:00
pci.c pci-hotplug/pnv_php: Add support for IODA3 Power9 PHBs 2019-09-05 14:22:39 +10:00
pci.h powerpc/powernv/ioda2: Allocate TCE table levels on demand for default DMA window 2019-08-19 13:20:23 +10:00
powernv.h powerpc/powernv: Add ultravisor message log interface 2019-08-30 09:40:16 +10:00
rng.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
setup.c powerpc/64s/powernv: machine check dump SLB contents 2019-08-30 10:32:35 +10:00
smp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
subcore-asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
subcore.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
subcore.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ultravisor.c powerpc/powernv: Add ultravisor message log interface 2019-08-30 09:40:16 +10:00
vas-debug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vas-trace.h powerpc/vas: Add a couple of trace points 2018-03-14 20:13:58 +11:00
vas-window.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
vas.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vas.h powerpc updates for 5.3 2019-07-13 16:08:36 -07:00