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authorDavid Daney <david.daney@cavium.com>2011-08-20 08:44:00 -0700
committerRalf Baechle <ralf@linux-mips.org>2011-09-21 17:53:56 +0200
commit465aaed0030b23d905f3eca5e65481773bea9ea1 (patch)
tree9564637609ba91b763fa38890739d9fbc38e64bb /arch
parentbd7100099a46b59f433dd15ad60adbb4d4f3d625 (diff)
downloadop-kernel-dev-465aaed0030b23d905f3eca5e65481773bea9ea1.zip
op-kernel-dev-465aaed0030b23d905f3eca5e65481773bea9ea1.tar.gz
MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE
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: . . . CPU 6 Unable to handle kernel paging request at virtual address 0000000000700000, epc == ffffffff8118fe00, ra == ffffffff8118fe9c Oops[#1]: Cpu 6 . . . ... Call Trace: [<ffffffff8118fe00>] setup_per_zone_wmarks+0x1b0/0x338 [<ffffffff815cd738>] init_per_zone_wmark_min+0x64/0xd0 [<ffffffff81100438>] do_one_initcall+0x38/0x160 . . . 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>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index d300c2b..b122adc 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -723,6 +723,7 @@ config CAVIUM_OCTEON_SIMULATOR
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_HOTPLUG_CPU
select SYS_HAS_CPU_CAVIUM_OCTEON
+ select HOLES_IN_ZONE
help
The Octeon simulator is software performance model of the Cavium
Octeon Processor. It supports simulating Octeon processors on x86
@@ -745,6 +746,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD
select ZONE_DMA32
select USB_ARCH_HAS_OHCI
select USB_ARCH_HAS_EHCI
+ select HOLES_IN_ZONE
help
This option supports all of the Octeon reference boards from Cavium
Networks. It builds a kernel that dynamically determines the Octeon
@@ -974,6 +976,9 @@ config ISA_DMA_API
config GENERIC_GPIO
bool
+config HOLES_IN_ZONE
+ bool
+
#
# 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
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