Re: [RFC][PATCH 6/8] module: Add module specific symbol namespace support

[Peter Zijlstra <peterz@xxxxxxxxxxxxx>]

On Mon, Nov 11, 2024 at 10:36:16AM -0800, Sean Christopherson wrote:
> E.g. for x86, something like:
> 
> #if IS_MODULE(CONFIG_KVM_AMD) && IS_MODULE(CONFIG_KVM_INTEL)
> #define KVM_VENDOR_MODULES kvm-amd,kvm-intel
> #elif IS_MODULE(CONFIG_KVM_AMD)
> #define KVM_VENDOR_MODULES kvm-amd
> #elif IS_MODULE(CONFIG_KVM_INTEL)
> #define KVM_VENDOR_MODULES kvm-intel
> #else
> #undef KVM_VENDOR_MODULES
> #endif
> 
> #ifdef KVM_VENDOR_MODULES
> static_assert(IS_MODULE(CONFIG_KVM_X86));
> 
> #define EXPORT_SYMBOL_GPL_FOR_KVM_INTERNAL(symbol) \
> 	EXPORT_SYMBOL_GPL_FOR(symbol, __stringify(KVM_VENDOR_MODULES))
> #define EXPORT_SYMBOL_GPL_FOR_KVM(symbol) \
> 	EXPORT_SYMBOL_GPL_FOR(symbol, "kvm," __stringify(KVM_VENDOR_MODULES))
> #else
> EXPORT_SYMBOL_GPL_FOR_KVM_INTERNAL(symbol)
> EXPORT_SYMBOL_GPL_FOR_KVM(symbol)
> #endif

I see no problem with KVM doing something like this on top of whatever
we end up with.