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

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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.

thanks,

greg k-h



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