how to add "spp=on" to enable spp feature

[qth1991]

Hello,I do some tests on "sub-page-protection" but when I called "KVM_INIT_SPP" the function return error "-KVM_EOPNOTSUPP " So I don 't know is there need hardware support or need to set the "spp_supported =1" by myself. if need set it and how to set it ?

[adlazar]

spp_supported is set if there is hardware support.

See this comment: 9d8e127#commitcomment-38137801

[adlazar]

@qth1991, you'll also need to load the kvm_intel module with nested=0