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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>
David Daney 14 rokov pred
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      arch/mips/Kconfig

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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