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fa14486979
linux/arch/powerpc
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Nishanth Aravamudan fa14486979 powerpc/powernv/pci-ioda: fix kdump with non-power-of-2 crashkernel= 
The 32-bit TCE table initialization relies on the DMA window having a
size equal to a power of 2 (and checks for it explicitly). But
crashkernel= has no constraint that requires a power-of-2 be specified.
This causes the kdump kernel to fail to boot as none of the PCI devices
(including the disk controller) are successfully initialized.

After this change, the PCI devices successfully set up the 32-bit TCE
table and kdump succeeds.

Fixes: aca6913f55 ("powerpc/powernv/ioda2: Introduce helpers to allocate TCE pages")
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org # 4.2
Tested-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-09-07 20:14:18 +10:00
..
boot powerpc/t1023rdb/dts: set ifc nand chip select from 2 to 1 2015-08-17 19:41:16 -05:00
configs Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next 2015-08-27 20:13:12 +10:00
crypto crypto: powerpc/md5 - use md5 IV MD5_HX instead of their raw value 2015-05-18 12:20:20 +08:00
include powerpc updates for 4.3 2015-09-03 16:41:38 -07:00
kernel powerpc updates for 4.3 2015-09-03 16:41:38 -07:00
kvm Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-09-01 18:46:42 -07:00
lib powerpc/32: Few optimisations in memcpy 2015-08-07 22:59:29 -05:00
math-emu
mm Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next 2015-08-27 20:13:12 +10:00
net ppc: bpf: Add SKF_AD_CPU for ppc32 2015-02-20 15:19:43 -05:00
oprofile powerpc: Remove mtmsrd(), use existing mtmsr() 2015-07-13 15:47:28 +10:00
perf powerpc/perf: Change type of the bhrb_users variable 2015-07-27 14:31:44 +10:00
platforms powerpc/powernv/pci-ioda: fix kdump with non-power-of-2 crashkernel= 2015-09-07 20:14:18 +10:00
sysdev powerpc updates for 4.3 2015-09-03 16:41:38 -07:00
xmon powerpc/xmon: Drop the valid variable completely in dump_segments() 2015-08-12 15:05:47 +10:00
Kconfig powerpc/mm: Drop CONFIG_PPC_HAS_HASH_64K 2015-08-18 19:32:10 +10:00
Kconfig.debug powerpc: Make STRICT_MM_TYPECHECKS a config option 2015-05-11 19:53:59 +10:00
Makefile powerpc/85xx: Use kconfig fragments 2015-08-07 22:59:19 -05:00
relocs_check.sh powerpc: Convert relocs_check to a shell script using grep 2015-03-23 14:47:39 +11:00