@@ -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);
@@ -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:
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 <gshan@redhat.com> --- arch/arm64/include/asm/kvm_host.h | 4 ++++ virt/kvm/arm/mmu.c | 14 ++++++++------ 2 files changed, 12 insertions(+), 6 deletions(-)