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Message-ID: <552E7E4C.5020804@redhat.com> Date: Wed, 15 Apr 2015 17:05:48 +0200 From: Paolo Bonzini <pbonzini@...hat.com> To: Xiao Guangrong <guangrong.xiao@...ux.intel.com>, Andres Lagar-Cavilla <andreslc@...gle.com> CC: Wanpeng Li <wanpeng.li@...ux.intel.com>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, Eric Northup <digitaleric@...gle.com> Subject: Re: [PATCH] KVM: MMU: fix comment in kvm_mmu_zap_collapsible_spte > - * Only EPT supported for now; otherwise, one would need to > - * find out efficiently whether the guest page tables are > - * also using huge pages. > + * We can not do huge page mapping for the indirect shadow > + * page (sp) found on the last rmap (level = 1 ) since > + * indirect sp is synced with the page table in guest and > + * indirect sp->level = 1 means the guest page table is > + * using 4K page size mapping. What about: + * We cannot do huge page mapping for indirect shadow pages, + * which are found on the last rmap (level = 1) when not using + * tdp; such shadow pages are synced with the page table in + * the guest, and the guest page table is using 4K page size + * mapping if the indirect sp has level = 1. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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