Hi Chris, On Sun, Feb 15, 2015 at 11:17:19AM +0000, Chris Clayton wrote: > 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: [email protected] > Signed-off-by: Chris Clayton <[email protected]> > > --- 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.
What's the problem with this? The page-table code is intentionally decoupled from the CPU architecture and having this boot-tested on x86 found some real bugs that I'm currently fixing. Sure, you probably don't need this on your box, but it's not default y and you don't have to select it. Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
