Factor out helper function for freeing the encrypted region list.
Signed-off-by: Peter Gonda <pgonda@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Sean Christopherson <seanjc@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Dr. David Alan Gilbert <dgilbert@xxxxxxxxxx>
Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
Cc: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
Cc: Wanpeng Li <wanpengli@xxxxxxxxxxx>
Cc: Jim Mattson <jmattson@xxxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
arch/x86/kvm/svm/sev.c | 26 +++++++++++++++++---------
1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 46e339c84998..5af46ff6ec48 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1767,11 +1767,25 @@ int svm_vm_copy_asid_from(struct kvm *kvm, unsigned int source_fd)
return ret;
}
+static void __unregister_region_list_locked(struct kvm *kvm,
+ struct list_head *mem_regions)
+{
+ struct enc_region *pos, *q;
+
+ lockdep_assert_held(&kvm->lock);
+
+ if (list_empty(mem_regions))
+ return;
+
+ list_for_each_entry_safe(pos, q, mem_regions, list) {
+ __unregister_enc_region_locked(kvm, pos);
+ cond_resched();
+ }
+}
+
void sev_vm_destroy(struct kvm *kvm)
{
struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
- struct list_head *head = &sev->regions_list;
- struct list_head *pos, *q;
if (!sev_guest(kvm))
return;
@@ -1795,13 +1809,7 @@ void sev_vm_destroy(struct kvm *kvm)
* if userspace was terminated before unregistering the memory regions
* then lets unpin all the registered memory.
*/
- if (!list_empty(head)) {
- list_for_each_safe(pos, q, head) {
- __unregister_enc_region_locked(kvm,
- list_entry(pos, struct enc_region, list));
- cond_resched();
- }
- }
+ __unregister_region_list_locked(kvm, &sev->regions_list);
mutex_unlock(&kvm->lock);
--
2.32.0.288.g62a8d224e6-goog
