Messages in this thread | | | Subject | Re: [PATCH v2 07/20] kvm: x86/mmu: Support zapping SPTEs in the TDP MMU | From | Paolo Bonzini <> | Date | Wed, 21 Oct 2020 19:20:15 +0200 |
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On 21/10/20 17:02, Yu Zhang wrote: >> void kvm_tdp_mmu_free_root(struct kvm *kvm, struct kvm_mmu_page *root) >> { >> + gfn_t max_gfn = 1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT); >> + > boot_cpu_data.x86_phys_bits is the host address width. Value of the guest's > may vary. So maybe we should just traverse the memslots and zap the gfn ranges > in each of them? >
It must be smaller than the host value for two-dimensional paging, though.
Paolo
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