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KVM: PPC: Book3S HV: Introduce kvmhv_update_nest_rmap_rc_list()

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Introduce a function kvmhv_update_nest_rmap_rc_list() which for a given
nest_rmap list will traverse it, find the corresponding pte in the shadow
page tables, and if it still maps the same host page update the rc bits
accordingly.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Suraj Jitindar Singh
2018-12-21 14:28:42 +11:00
committed by Paul Mackerras
parent 8b23eee4e5
commit 90165d3da0
4 changed files with 58 additions and 2 deletions
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2
arch/powerpc/include/asm/kvm_book3s.h
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@@ -203,6 +203,8 @@ extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr,
int table_index, u64 *pte_ret_p);
extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
struct kvmppc_pte *gpte, bool data, bool iswrite);
extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr,
unsigned int pshift, unsigned int lpid);
extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa,
unsigned int shift,
const struct kvm_memory_slot *memslot,

3
arch/powerpc/include/asm/kvm_book3s_64.h
View File

@@ -637,6 +637,9 @@ extern int kvmppc_create_pte(struct kvm *kvm, pgd_t *pgtable, pte_t pte,
unsigned long *rmapp, struct rmap_nested **n_rmap);
extern void kvmhv_insert_nest_rmap(struct kvm *kvm, unsigned long *rmapp,
struct rmap_nested **n_rmap);
extern void kvmhv_update_nest_rmap_rc_list(struct kvm *kvm, unsigned long *rmapp,
unsigned long clr, unsigned long set,
unsigned long hpa, unsigned long nbytes);
extern void kvmhv_remove_nest_rmap_range(struct kvm *kvm,
const struct kvm_memory_slot *memslot,
unsigned long gpa, unsigned long hpa,