When running "make oldconfig" for an x86_64 kernel, I was prompted for a
setting for IOMMU_IO_PGTABLE_LPAE. From the
prompt and the help text it appears that this config item is relevant to
ARMv7/v8 only. This patch prevents the prompt
on non-ARM architectures. Compile tested building a cross-compiled x86_64
kernel in an x86 user space. The resultant
kernel boots fine and I am running it now.
Fixes: e1d3c0fd701df831169b116cd5c5d6203ac07f70
Cc: will.dea...@arm.com
Signed-off-by: Chris Clayton <chris2...@googlemail.com>
--- linux/drivers/iommu/Kconfig.orig 2015-02-15 09:44:01.235927248 +0000
+++ linux/drivers/iommu/Kconfig 2015-02-15 09:44:41.131926434 +0000
@@ -22,6 +22,7 @@ config IOMMU_IO_PGTABLE
config IOMMU_IO_PGTABLE_LPAE
bool "ARMv7/v8 Long Descriptor Format"
+ depends on ARM || ARM64
select IOMMU_IO_PGTABLE
help
Enable support for the ARM long descriptor pagetable format.
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