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a2ce720038
When a memory slot is hot plugged to a SVM, PFNs associated with the GFNs in that slot must be migrated to the secure-PFNs, aka device-PFNs. Call kvmppc_uv_migrate_mem_slot() to accomplish this. Disable page-merge for all pages in the memory slot. Reviewed-by: Bharata B Rao <bharata@linux.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> [rearranged the code, and modified the commit log] Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_KVM_BOOK3S_UVMEM_H__
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#define __ASM_KVM_BOOK3S_UVMEM_H__
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#ifdef CONFIG_PPC_UV
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int kvmppc_uvmem_init(void);
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void kvmppc_uvmem_free(void);
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bool kvmppc_uvmem_available(void);
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int kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot);
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void kvmppc_uvmem_slot_free(struct kvm *kvm,
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const struct kvm_memory_slot *slot);
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unsigned long kvmppc_h_svm_page_in(struct kvm *kvm,
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unsigned long gra,
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unsigned long flags,
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unsigned long page_shift);
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unsigned long kvmppc_h_svm_page_out(struct kvm *kvm,
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unsigned long gra,
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unsigned long flags,
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unsigned long page_shift);
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unsigned long kvmppc_h_svm_init_start(struct kvm *kvm);
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unsigned long kvmppc_h_svm_init_done(struct kvm *kvm);
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int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn);
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unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm);
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void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
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struct kvm *kvm, bool skip_page_out);
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int kvmppc_uvmem_memslot_create(struct kvm *kvm,
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const struct kvm_memory_slot *new);
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void kvmppc_uvmem_memslot_delete(struct kvm *kvm,
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const struct kvm_memory_slot *old);
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#else
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static inline int kvmppc_uvmem_init(void)
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{
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return 0;
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}
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static inline void kvmppc_uvmem_free(void) { }
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static inline bool kvmppc_uvmem_available(void)
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{
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return false;
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}
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static inline int
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kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot)
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{
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return 0;
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}
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static inline void
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kvmppc_uvmem_slot_free(struct kvm *kvm, const struct kvm_memory_slot *slot) { }
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static inline unsigned long
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kvmppc_h_svm_page_in(struct kvm *kvm, unsigned long gra,
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unsigned long flags, unsigned long page_shift)
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{
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return H_UNSUPPORTED;
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}
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static inline unsigned long
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kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gra,
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unsigned long flags, unsigned long page_shift)
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{
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return H_UNSUPPORTED;
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}
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static inline unsigned long kvmppc_h_svm_init_start(struct kvm *kvm)
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{
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return H_UNSUPPORTED;
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}
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static inline unsigned long kvmppc_h_svm_init_done(struct kvm *kvm)
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{
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return H_UNSUPPORTED;
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}
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static inline unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm)
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{
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return H_UNSUPPORTED;
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}
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static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn)
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{
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return -EFAULT;
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}
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static inline void
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kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
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struct kvm *kvm, bool skip_page_out) { }
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static inline int kvmppc_uvmem_memslot_create(struct kvm *kvm,
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const struct kvm_memory_slot *new)
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{
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return H_UNSUPPORTED;
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}
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static inline void kvmppc_uvmem_memslot_delete(struct kvm *kvm,
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const struct kvm_memory_slot *old) { }
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#endif /* CONFIG_PPC_UV */
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#endif /* __ASM_KVM_BOOK3S_UVMEM_H__ */
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