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68c0449ea1
linux/arch/powerpc/platforms/pseries
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Alexey Kardashevskiy 68c0449ea1 powerpc/pseries/iommu: Use memory@ nodes in max RAM address calculation 
We might have memory@ nodes with "linux,usable-memory" set to zero
(for example, to replicate powernv's behaviour for GPU coherent memory)
which means that the memory needs an extra initialization but since
it can be used afterwards, the pseries platform will try mapping it
for DMA so the DMA window needs to cover those memory regions too;
if the window cannot cover new memory regions, the memory onlining fails.

This walks through the memory nodes to find the highest RAM address to
let a huge DMA window cover that too in case this memory gets onlined
later.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-21 16:20:46 +11:00
..
cmm.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
dlpar.c powerpc/pseries: PAPR persistent memory support 2018-10-19 00:56:17 +11:00
dtl.c powerpc/pseries: Fix how we iterate over the DTL entries 2018-10-03 15:40:02 +10:00
eeh_pseries.c powerpc/eeh: Cleanup eeh_ops.wait_state() 2018-10-13 22:21:25 +11:00
event_sources.c powerpc/pseries: Use of_irq_get helper() in request_event_sources_irqs() 2018-10-03 15:40:01 +10:00
firmware.c powerpc/pseries: PAPR persistent memory support 2018-10-19 00:56:17 +11:00
hotplug-cpu.c powerpc: Convert to using %pOFn instead of device_node.name 2018-10-03 15:40:01 +10:00
hotplug-memory.c powerpc/fadump: Do not allow hot-remove memory from fadump reserved area. 2018-12-21 11:32:49 +11:00
hvCall_inst.c powerpc/pseries: hcall_exit tracepoint retval should be signed 2018-05-10 23:17:43 +10:00
hvCall.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
hvconsole.c powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
hvcserver.c powerpc/pseries/hvcserver: don't memset pi_buff if it is null 2015-10-09 08:03:03 +11:00
ibmebus.c powerpc: Convert to using %pOFn instead of device_node.name 2018-10-03 15:40:01 +10:00
io_event_irq.c powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
iommu.c powerpc/pseries/iommu: Use memory@ nodes in max RAM address calculation 2018-12-21 16:20:46 +11:00
Kconfig powerpc/papr_scm: Use depend instead of select 2018-12-07 23:32:01 +11:00
kexec.c powerpc/xive: Remove xive_kexec_teardown_cpu() 2018-08-07 21:49:28 +10:00
lpar.c powerpc/pseries: Export raw per-CPU VPA data via debugfs 2018-10-20 13:26:47 +11:00
lparcfg.c powerpc/pseries: Export maximum memory value 2018-10-26 21:58:58 +11:00
Makefile powerpc/pseries: Add driver for PAPR SCM regions 2018-10-19 00:56:17 +11:00
mobility.c powerpc/pseries/mobility: Extend start/stop topology update scope 2018-10-13 22:21:25 +11:00
msi.c powerpc/eeh: Cleanup list_head field names 2018-10-13 22:21:25 +11:00
nvram.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
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: Use ibm,unit-guid as the iset cookie 2018-12-09 21:32:51 +11:00
pci_dlpar.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
pci.c powerpc/eeh: Cleanup EEH_POSTPONED_PROBE 2018-10-13 22:21:25 +11:00
pmem.c powerpc/pseries: PAPR persistent memory support 2018-10-19 00:56:17 +11:00
power.c powerpc/sparse: Include headers containing prototypes 2016-06-16 22:40:19 +10:00
pseries_energy.c pseries/drc-info: Search DRC properties for CPU indexes 2018-01-21 16:21:46 +11:00
pseries.h powerpc/pseries: PAPR persistent memory support 2018-10-19 00:56:17 +11:00
ras.c powerpc/pseries: PAPR persistent memory support 2018-10-19 00:56:17 +11:00
reconfig.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
rng.c powerpc: Use hardware RNG for arch_get_random_seed_* not arch_get_random_* 2015-07-23 19:52:03 +10:00
scanlog.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
setup.c powerpc: Use device_type helpers to access the node type 2018-11-26 22:33:37 +11:00
smp.c Merge branch 'topic/paca' into next 2018-03-31 09:09:36 +11:00
suspend.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
vio.c powerpc: Use device_type helpers to access the node type 2018-11-26 22:33:37 +11:00