Messages in this thread | | | Date | Wed, 13 May 2015 16:10:08 +0200 | From | Paolo Bonzini <> | Subject | Re: [PATCH v3 09/10] KVM: MMU: fix MTRR update |
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On 13/05/2015 10:43, Wanpeng Li wrote: > kvm_mmu_reset_context > kvm_mmu_unload > mmu_free_roots > > The original root shadow page will be freed in mmu_free_roots, where I > miss? > > Another question maybe not related to this patch: > > If kvm_mmu_reset_context is just called to destroy the original root > shadow page and all the sptes will remain valid?
SPTEs are kept around and cached. The "role" field is used as the hash key; if the role doesn't change, SPTEs are reused, so you have to zap the SPTEs explicitly.
Paolo
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