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5712846808
1. We were calling clear_flush_young_notify in unmap_one, but we are within an mmu notifier invalidate range scope. The spte exists no more (due to range_start) and the accessed bit info has already been propagated (due to kvm_pfn_set_accessed). Simply call clear_flush_young. 2. We clear_flush_young on a primary MMU PMD, but this may be mapped as a collection of PTEs by the secondary MMU (e.g. during log-dirty). This required expanding the interface of the clear_flush_young mmu notifier, so a lot of code has been trivially touched. 3. In the absence of shadow_accessed_mask (e.g. EPT A bit), we emulate the access bit by blowing the spte. This requires proper synchronizing with MMU notifier consumers, like every other removal of spte's does. Signed-off-by: Andres Lagar-Cavilla <andreslc@google.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/*
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* Copyright IBM Corporation, 2013
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* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License or (at your optional) any later version of the license.
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*
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*/
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#ifndef __POWERPC_KVM_BOOK3S_H__
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#define __POWERPC_KVM_BOOK3S_H__
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extern void kvmppc_core_flush_memslot_hv(struct kvm *kvm,
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struct kvm_memory_slot *memslot);
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extern int kvm_unmap_hva_hv(struct kvm *kvm, unsigned long hva);
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extern int kvm_unmap_hva_range_hv(struct kvm *kvm, unsigned long start,
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unsigned long end);
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extern int kvm_age_hva_hv(struct kvm *kvm, unsigned long start,
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unsigned long end);
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extern int kvm_test_age_hva_hv(struct kvm *kvm, unsigned long hva);
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extern void kvm_set_spte_hva_hv(struct kvm *kvm, unsigned long hva, pte_t pte);
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extern void kvmppc_mmu_destroy_pr(struct kvm_vcpu *vcpu);
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extern int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int inst, int *advance);
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extern int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu,
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int sprn, ulong spr_val);
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extern int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu,
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int sprn, ulong *spr_val);
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extern int kvmppc_book3s_init_pr(void);
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extern void kvmppc_book3s_exit_pr(void);
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#endif
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