FAILED: patch "[PATCH] KVM: SEV: Move sev_free_vcpu() down below sev_es_unmap_ghcb()" failed to apply to 6.18-stable tree

FAILED: patch "[PATCH] KVM: SEV: Move sev_free_vcpu() down below sev_es_unmap_ghcb()" failed to apply to 6.18-stable tree

[gregkh]

The patch below does not apply to the 6.18-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.18.y
git checkout FETCH_HEAD
git cherry-pick -x 08385c5e1814edee829ffe475d559ed730354335
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026061531-lagging-sketch-8a96@gregkh' --subject-prefix 'PATCH 6.18.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 08385c5e1814edee829ffe475d559ed730354335 Mon Sep 17 00:00:00 2001
From: Sean Christopherson <seanjc@google.com>
Date: Fri, 29 May 2026 20:35:40 +0200
Subject: [PATCH] KVM: SEV: Move sev_free_vcpu() down below sev_es_unmap_ghcb()

Relocate sev_free_vcpu() down in sev.c so that it's definition comes after
sev_es_unmap_ghcb().  This will allow sharing unmap functionality between
the two functions without needing a forward declaration (or weird placement
of the common code).

No functional change intended.

Cc: stable@vger.kernel.org
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20260501202250.2115252-16-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20260529183549.1104619-16-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 4ebe0d449789..437282f0ea94 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -3313,37 +3313,6 @@ void sev_guest_memory_reclaimed(struct kvm *kvm)
 	sev_writeback_caches(kvm);
 }
 
-void sev_free_vcpu(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_svm *svm;
-
-	if (!is_sev_es_guest(vcpu))
-		return;
-
-	svm = to_svm(vcpu);
-
-	/*
-	 * If it's an SNP guest, then the VMSA was marked in the RMP table as
-	 * a guest-owned page. Transition the page to hypervisor state before
-	 * releasing it back to the system.
-	 */
-	if (is_sev_snp_guest(vcpu)) {
-		u64 pfn = __pa(svm->sev_es.vmsa) >> PAGE_SHIFT;
-
-		if (kvm_rmp_make_shared(vcpu->kvm, pfn, PG_LEVEL_4K))
-			goto skip_vmsa_free;
-	}
-
-	if (vcpu->arch.guest_state_protected)
-		sev_flush_encrypted_page(vcpu, svm->sev_es.vmsa);
-
-	__free_page(virt_to_page(svm->sev_es.vmsa));
-
-skip_vmsa_free:
-	if (svm->sev_es.ghcb_sa_free)
-		kvfree(svm->sev_es.ghcb_sa);
-}
-
 static void dump_ghcb(struct vcpu_svm *svm)
 {
 	struct vmcb_control_area *control = &svm->vmcb->control;
@@ -3618,6 +3587,37 @@ void sev_es_unmap_ghcb(struct vcpu_svm *svm)
 	svm->sev_es.ghcb = NULL;
 }
 
+void sev_free_vcpu(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_svm *svm;
+
+	if (!is_sev_es_guest(vcpu))
+		return;
+
+	svm = to_svm(vcpu);
+
+	/*
+	 * If it's an SNP guest, then the VMSA was marked in the RMP table as
+	 * a guest-owned page. Transition the page to hypervisor state before
+	 * releasing it back to the system.
+	 */
+	if (is_sev_snp_guest(vcpu)) {
+		u64 pfn = __pa(svm->sev_es.vmsa) >> PAGE_SHIFT;
+
+		if (kvm_rmp_make_shared(vcpu->kvm, pfn, PG_LEVEL_4K))
+			goto skip_vmsa_free;
+	}
+
+	if (vcpu->arch.guest_state_protected)
+		sev_flush_encrypted_page(vcpu, svm->sev_es.vmsa);
+
+	__free_page(virt_to_page(svm->sev_es.vmsa));
+
+skip_vmsa_free:
+	if (svm->sev_es.ghcb_sa_free)
+		kvfree(svm->sev_es.ghcb_sa);
+}
+
 int pre_sev_run(struct vcpu_svm *svm, int cpu)
 {
 	struct svm_cpu_data *sd = per_cpu_ptr(&svm_data, cpu);