This renames user_mem_abort() to kvm_handle_user_mem_abort(), and then export it. The function will be used in asynchronous page fault to populate a page table entry once the corresponding page is populated from the backup device (e.g. swap partition):
* Parameter @fault_status is replace by @esr. * The parameters are reorder based on their importance. This shouldn't cause any functional changes. Signed-off-by: Gavin Shan <[email protected]> --- arch/arm64/include/asm/kvm_host.h | 4 ++++ virt/kvm/arm/mmu.c | 14 ++++++++------ 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 32c8a675e5a4..f77c706777ec 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -437,6 +437,10 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu, struct kvm_vcpu_events *events); #define KVM_ARCH_WANT_MMU_NOTIFIER +int kvm_handle_user_mem_abort(struct kvm_vcpu *vcpu, unsigned int esr, + struct kvm_memory_slot *memslot, + phys_addr_t fault_ipa, unsigned long hva, + bool prefault); int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end); int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index e462e0368fd9..95aaabb2b1fc 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -1656,12 +1656,12 @@ static bool fault_supports_stage2_huge_mapping(struct kvm_memory_slot *memslot, (hva & ~(map_size - 1)) + map_size <= uaddr_end; } -static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, - struct kvm_memory_slot *memslot, unsigned long hva, - unsigned long fault_status) +int kvm_handle_user_mem_abort(struct kvm_vcpu *vcpu, unsigned int esr, + struct kvm_memory_slot *memslot, + phys_addr_t fault_ipa, unsigned long hva, + bool prefault) { - int ret; - u32 esr = kvm_vcpu_get_esr(vcpu); + unsigned int fault_status = kvm_vcpu_trap_get_fault_type(esr); bool write_fault, writable, force_pte = false; bool exec_fault, needs_exec; unsigned long mmu_seq; @@ -1674,6 +1674,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, pgprot_t mem_type = PAGE_S2; bool logging_active = memslot_is_logging(memslot); unsigned long vma_pagesize, flags = 0; + int ret; write_fault = kvm_is_write_fault(esr); exec_fault = kvm_vcpu_trap_is_iabt(esr); @@ -1995,7 +1996,8 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run) goto out_unlock; } - ret = user_mem_abort(vcpu, fault_ipa, memslot, hva, fault_status); + ret = kvm_handle_user_mem_abort(vcpu, esr, memslot, + fault_ipa, hva, false); if (ret == 0) ret = 1; out: -- 2.23.0
