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SubjectRe: [RFC v2 10/32] x86/tdx: Wire up KVM hypercalls
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On 5/12/21 7:10 AM, Kuppuswamy, Sathyanarayanan wrote:
> On 5/12/21 6:00 AM, Kirill A. Shutemov wrote:
>> This has to be compiled only for TDX+KVM.
>
> Got it. So if we want to remove the "C" file include, we will have to
> add #ifdef CONFIG_KVM_GUEST in Makefile.
>
> ifdef CONFIG_KVM_GUEST
> obj-$(CONFIG_INTEL_TDX_GUEST) += tdx-kvm.o
> #endif

Is there truly no dependency between CONFIG_KVM_GUEST and
CONFIG_INTEL_TDX_GUEST?

If there isn't, then the way we do it is adding another (invisible)
Kconfig variable to express the dependency for tdx-kvm.o:

config INTEL_TDX_GUEST_KVM
bool
depends on KVM_GUEST && INTEL_TDX_GUEST

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