On Tue, Dec 20, 2022 at 03:43:18PM +0800, Chao Peng wrote: > RESTRICTEDMEM is needed by TDX_HOST, not TDX_GUEST. Which basically means that RESTRICTEDMEM should simply depend on KVM. Because you can't know upfront whether KVM will run a TDX guest or a SNP guest and so on. Which then means that RESTRICTEDMEM will practically end up always enabled in KVM HV configs. > The only reason to add another HAVE_KVM_RESTRICTED_MEM is some code only > works for 64bit[*] and CONFIG_RESTRICTEDMEM is not sufficient to enforce > that. This is what I mean with "we have too many Kconfig items". :-\ -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette