[PATCH] ARM: nommu: re-enable use of vexpress without ARCH_MULTIPLATFORM

Christopher Covington cov at codeaurora.org
Thu Jan 10 08:20:57 EST 2013

On 01/10/2013 05:16 AM, Arnd Bergmann wrote:


> I'd certainly be happy with
> * removing the intentional build error for ARCH_MULTIPLATFORM, but leaving
> * having mach-virt enabled by default on ARCH_MULTIPLATFORM, and only
>   visible for EXPERT.
> * making mach-virt compatible with all CPUs starting with ARM7.
> That would make allnoconfig, allyesconfig and allmodconfig work (besides
> all the other bugs) on qemu at least, avoid build errors with randconfig
> and make it hard enough to build a kernel that doesn't run on anything.

If this is going to be the approach, I would like to once again suggest that
paths, configuration options, and compatibility strings along the lines of
"mach-genericarmv7", "Generic ARMv7 Machine", and "linux,genericarmv7" be
considered in place of "mach-virt", "Dummy Virtual Machine" and
"linux,dummy-virt", respectively.

Virtualization may have been the initial motivation for creating mach-virt,
but the code is clearly also immediately applicable to other environments such
as simulation/emulation, and sticking to a name like "Dummy Virtual Machine"
makes it sound like such usage is erroneous.


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