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ab7032e793
linux_dsm_epyc7002/arch/powerpc/platforms/powernv
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Alexey Kardashevskiy ab7032e793 powerpc/ioda/npu: Call skiboot's hot reset hook when disabling NPU2 
The skiboot firmware has a hot reset handler which fences the NVIDIA V100
GPU RAM on Witherspoons and makes accesses no-op instead of throwing HMIs:
https://github.com/open-power/skiboot/commit/fca2b2b839a67

Now we are going to pass V100 via VFIO which most certainly involves
KVM guests which are often terminated without getting a chance to offline
GPU RAM so we end up with a running machine with misconfigured memory.
Accessing this memory produces hardware management interrupts (HMI)
which bring the host down.

To suppress HMIs, this wires up this hot reset hook to vfio_pci_disable()
via pci_disable_device() which switches NPU2 to a safe mode and prevents
HMIs.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Alistair Popple <alistair@popple.id.au>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-21 16:20:46 +11:00
..
copy-paste.h powerpc/powernv: copy/paste - Mask SO bit in CR 2018-06-04 22:58:41 +10:00
eeh-powernv.c powerpc/powernv/eeh/npu: Fix uninitialized variables in opal_pci_eeh_freeze_status 2018-12-20 22:59:03 +11:00
idle.c powerpc/powernv/idle: Fix build error 2018-08-10 22:12:39 +10:00
Kconfig powerpc: remove redundant 'default n' from Kconfig-s 2018-10-13 22:21:25 +11:00
Makefile powerpc/powernv: Move TCE manupulation code to its own file 2018-07-16 22:53:07 +10:00
memtrace.c powerpc/powernv: hold device_hotplug_lock when calling memtrace_offline_pages() 2018-10-31 08:54:17 -07:00
npu-dma.c powerpc/powernv/npu: Remove unused headers and a macro. 2018-12-20 22:59:03 +11:00
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 powerpc/opal: Add opal_async_wait_response_interruptible() to opal-async 2017-11-06 20:39:28 +11:00
opal-dump.c powerpc/powernv/opal-dump : Use IRQ_HANDLED instead of numbers in interrupt handler 2018-07-24 22:03:24 +10:00
opal-elog.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
opal-flash.c powerpc/powernv: Always stop secondaries before reboot/shutdown 2018-04-03 22:59:57 +10:00
opal-hmi.c powerpc-opal: fix spelling mistake "Uniterrupted" -> "Uninterrupted" 2018-06-05 11:33:47 +10:00
opal-imc.c powerpc/perf: Unregister thread-imc if core-imc not supported 2018-06-03 20:43:37 +10:00
opal-irqchip.c powerpc/powernv/opal: Use standard interrupts property when available 2018-08-08 00:32:38 +10:00
opal-kmsg.c powerpc/powernv: Implement and use opal_flush_console 2018-07-24 22:09:56 +10:00
opal-lpc.c powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there 2017-04-11 07:46:03 +10:00
opal-memory-errors.c powerpc: Use sizeof(*foo) rather than sizeof(struct foo) 2018-03-20 16:47:53 +11:00
opal-msglog.c locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE() 2017-10-25 11:01:08 +02:00
opal-nvram.c powerpc/powernv: Fix NVRAM sleep in invalid context when crashing 2018-05-18 00:23:07 +10:00
opal-power.c powerpc/powernv: Move opal_power_control_init() call in opal_init(). 2018-12-21 11:32:49 +11:00
opal-powercap.c powerpc: Convert to using %pOFn instead of device_node.name 2018-10-03 15:40:01 +10:00
opal-prd.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
opal-psr.c powerpc: Use sizeof(*foo) rather than sizeof(struct foo) 2018-03-20 16:47:53 +11:00
opal-rtc.c powerpc: use time64_t in read_persistent_clock 2018-06-03 20:43:33 +10:00
opal-sensor-groups.c powerpc: Convert to using %pOFn instead of device_node.name 2018-10-03 15:40:01 +10:00
opal-sensor.c powernv: opal-sensor: Add support to read 64bit sensor values 2018-05-21 14:48:02 +10:00
opal-sysparam.c powerpc: Convert to using %pOFn instead of device_node.name 2018-10-03 15:40:01 +10:00
opal-tracepoints.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
opal-wrappers.S crypto/nx: Initialize 842 high and normal RxFIFO control registers 2018-08-08 00:32:34 +10:00
opal-xscom.c powerpc: Use sizeof(*foo) rather than sizeof(struct foo) 2018-03-20 16:47:53 +11:00
opal.c powerpc/powernv: Move opal_power_control_init() call in opal_init(). 2018-12-21 11:32:49 +11:00
pci-cxl.c Revert "powerpc/powernv: Add support for the cxl kernel api on the real phb" 2018-07-02 23:54:32 +10:00
pci-ioda-tce.c powerpc/powernv/ioda: Allocate indirect TCE levels of cached userspace addresses on demand 2018-12-20 22:59:03 +11:00
pci-ioda.c powerpc/ioda/npu: Call skiboot's hot reset hook when disabling NPU2 2018-12-21 16:20:46 +11:00
pci.c powerpc/powernv: Remove PCI_MSI ifdef checks 2018-12-21 11:32:49 +11:00
pci.h powerpc/powernv: Remove PCI_MSI ifdef checks 2018-12-21 11:32:49 +11:00
powernv.h powerpc/powernv: process all OPAL event interrupts with kopald 2018-06-03 20:40:30 +10:00
rng.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
setup.c powerpc/powernv: Make possible for user to force a full ipl cec reboot 2018-10-03 15:39:45 +10:00
smp.c powerpc/64s: Remove POWER9 DD1 support 2018-07-16 11:37:21 +10:00
subcore-asm.S powerpc/powernv: Add support for POWER8 split core on powernv 2014-05-28 13:35:37 +10:00
subcore.c powerpc/64: Use array of paca pointers and allocate pacas individually 2018-03-30 23:34:23 +11:00
subcore.h powernv/powerpc: Add winkle support for offline cpus 2014-12-15 10:46:41 +11:00
vas-debug.c powerpc/powernv/vas: Use DEFINE_SHOW_ATTRIBUTE macro 2018-11-25 17:11:22 +11:00
vas-trace.h powerpc/vas: Add a couple of trace points 2018-03-14 20:13:58 +11:00
vas-window.c ppc: Convert vas ID allocation to new IDA API 2018-08-21 23:54:19 -04:00
vas.c powerpc/vas: Fix cleanup when VAS is not configured 2018-03-14 20:11:37 +11:00
vas.h powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00