Re: [PATCH] MIPS: VZ: Only include loongson_regs.h for CPU_LOONGSON64

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On Mon, Aug 10, 2020 at 11:03:10AM +0200, Greg KH wrote:
> On Mon, Aug 10, 2020 at 10:56:48AM +0200, Paolo Bonzini wrote:
> > On 10/08/20 09:44, Greg KH wrote:
> > >> There is more #ifdef CONFIG_CPU_LOONGSON64 in arch/mips/kvm/vz.c, and
> > >> more #include "loongson_regs.h" in arch/mips.  So while I agree with
> > >> Greg that this idiom is quite unusual, it seems to be the expected way
> > >> to use this header.  I queued the patch.
> > > Or you all could fix it up to work properly like all other #include
> > > lines in the kernel source tree.  There's no reason mips should be
> > > "special" here, right?
> > 
> > It's not just this #include, there's a couple dozen mach-* directories;
> > changing how they work would be up to the MIPS maintainers (CCed), and
> > it would certainly not be a patch that can be merged in stable@ kernels.
> > 
> > arch/mips/kernel/cpu-probe.c has the same
> > 
> > #ifdef CONFIG_CPU_LOONGSON64
> > #include <loongson_regs.h>
> > 
> > for example, so apparently they're good with this.  So if I don't pick
> > up the patch to fix the build it would be in all likelihood merged by
> > MIPS maintainers.  The only difference will be how long the build
> > remains broken and the fact that they need to worry about KVM despite
> > the presence of a specific maintainer.
> 
> Ok, fair enough, but in the long-run, this should probably be fixed up
> "properly" if this arch is still being maintained.

I have it on my todo list. My plan is to move stuff out of mach-* directories,
which aren't needed there. This should solve issues like the one here.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]



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