Re: [tip: perf/core] perf: Use EXPORT_SYMBOL_FOR_KVM() for the mediated APIs

[Sean Christopherson <seanjc@google.com>]

On Fri, Dec 19, 2025, Peter Zijlstra wrote:
> On Thu, Dec 18, 2025 at 10:40:51AM -0800, Sean Christopherson wrote:
> 
> 
> > Include the arch-defined asm/kvm_types.h if and only if the kernel is
> > being compiled for an architecture that supports KVM so that kvm_types.h
> > can be included in generic code without having to guard _those_ includes,
> > and without having to add "generic-y += kvm_types.h" for all architectures
> > that don't support KVM.
> 
> Something jogged my brain and the below seems to work for the few
> architectures I've tried. Let me update the patch and see if the build
> robot still finds fail.

Nice!  Works on my end as well.  Just when I think I've learned most of the
build system's tricks...

> ---
> diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
> index 295c94a3ccc1..9aff61e7b8f2 100644
> --- a/include/asm-generic/Kbuild
> +++ b/include/asm-generic/Kbuild
> @@ -32,6 +32,7 @@ mandatory-y += irq_work.h
>  mandatory-y += kdebug.h
>  mandatory-y += kmap_size.h
>  mandatory-y += kprobes.h
> +mandatory-y += kvm_types.h
>  mandatory-y += linkage.h
>  mandatory-y += local.h
>  mandatory-y += local64.h