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MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE

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Current Octeon systems do in fact have holes in their memory zones.
We need to select HOLES_IN_ZONE.  If we do not, some memory
configurations will result in crashes at boot time like this:

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CPU 6 Unable to handle kernel paging request at virtual address 0000000000700000, epc == ffffffff8118fe00, ra == ffffffff8118fe9c
Oops[#1]:
Cpu 6
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        ...
Call Trace:
[<ffffffff8118fe00>] setup_per_zone_wmarks+0x1b0/0x338
[<ffffffff815cd738>] init_per_zone_wmark_min+0x64/0xd0
[<ffffffff81100438>] do_one_initcall+0x38/0x160
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Reported-by: Jason Kwon <jason.kwon@ericsson.com>
Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Cc: Jason Kwon <jason.kwon@ericsson.com>
Patchwork: https://patchwork.linux-mips.org/patch/2724/
Tested-by: Guenter Roeck<guenter.roeck@ericsson.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2011-08-20 08:44:00 -07:00 committed by Ralf Baechle
parent bd7100099a
commit 465aaed003
1 changed files with 5 additions and 0 deletions
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arch/mips/Kconfig
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@ -723,6 +723,7 @@ config CAVIUM_OCTEON_SIMULATOR
select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_HOTPLUG_CPU select SYS_SUPPORTS_HOTPLUG_CPU
select SYS_HAS_CPU_CAVIUM_OCTEON select SYS_HAS_CPU_CAVIUM_OCTEON
select HOLES_IN_ZONE
help help
The Octeon simulator is software performance model of the Cavium The Octeon simulator is software performance model of the Cavium
Octeon Processor. It supports simulating Octeon processors on x86 Octeon Processor. It supports simulating Octeon processors on x86
@ -745,6 +746,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD
select ZONE_DMA32 select ZONE_DMA32
select USB_ARCH_HAS_OHCI select USB_ARCH_HAS_OHCI
select USB_ARCH_HAS_EHCI select USB_ARCH_HAS_EHCI
select HOLES_IN_ZONE
help help
This option supports all of the Octeon reference boards from Cavium This option supports all of the Octeon reference boards from Cavium
Networks. It builds a kernel that dynamically determines the Octeon Networks. It builds a kernel that dynamically determines the Octeon
@ -974,6 +976,9 @@ config ISA_DMA_API
config GENERIC_GPIO config GENERIC_GPIO
bool bool
config HOLES_IN_ZONE
bool
# #
# Endianess selection. Sufficiently obscure so many users don't know what to # Endianess selection. Sufficiently obscure so many users don't know what to
# answer,so we try hard to limit the available choices. Also the use of a # answer,so we try hard to limit the available choices. Also the use of a