Messages in this thread | | | Date | Mon, 2 May 2022 13:52:10 +0200 | Subject | Re: [PATCH] KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR | From | Paolo Bonzini <> |
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On 5/2/22 13:12, Kai Huang wrote: >> - if (unlikely(!enable_mmio_caching)) { >> + if (unlikely(!enable_mmio_caching) || >> + unlikely(fault->gfn > kvm_mmu_max_gfn_host())) { > Shouldn't we check fault->gfn against cpuid_maxphyaddr(vcpu) instead of > kvm_mmu_max_gfn_host() here?
No, the point of this check is to handle the case where kvm_mmu_max_gfn_host() is smaller than cpuid_maxphyaddr().
Paolo
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