From: Peter Gonda <pgonda@google.com>
To: kvm@vger.kernel.org
Cc: Peter Gonda <pgonda@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
David Rientjes <rientjes@google.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] KVM, SEV: Refactor out function for unregistering encrypted regions
Date: Mon, 21 Jun 2021 09:31:16 -0700 [thread overview]
Message-ID: <20210621163118.1040170-2-pgonda@google.com> (raw)
In-Reply-To: <20210621163118.1040170-1-pgonda@google.com>
Factor out helper function for freeing the encrypted region list.
Signed-off-by: Peter Gonda <pgonda@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
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
next prev parent reply other threads:[~2021-06-21 16:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-21 16:31 [PATCH 0/3] Add AMD SEV and SEV-ES local migration support Peter Gonda
2021-06-21 16:31 ` Peter Gonda [this message]
2021-07-12 20:05 ` [PATCH 1/3] KVM, SEV: Refactor out function for unregistering encrypted regions Brijesh Singh
2021-07-13 21:40 ` Sean Christopherson
2021-07-13 23:18 ` Marc Orr
2021-06-21 16:31 ` [PATCH 2/3] KVM, SEV: Add support for SEV local migration Peter Gonda
2021-07-12 21:09 ` Brijesh Singh
2021-07-13 20:12 ` Peter Gonda
2021-07-13 22:12 ` Sean Christopherson
2021-07-13 23:24 ` Marc Orr
2021-06-21 16:31 ` [PATCH 3/3] KVM, SEV: Add support for SEV-ES " Peter Gonda
2021-07-13 18:41 ` Brijesh Singh
2021-07-13 22:21 ` Sean Christopherson
2021-07-13 23:25 ` Marc Orr
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