Commit c7586aa3 authored by John Allen's avatar John Allen Committed by Sean Christopherson
Browse files

KVM: SVM: Update dump_vmcb with shadow stack save area additions 



Add shadow stack VMCB fields to dump_vmcb. PL0_SSP, PL1_SSP, PL2_SSP,
PL3_SSP, and U_CET are part of the SEV-ES save area and are encrypted,
but can be decrypted and dumped if the guest policy allows debugging.

Reviewed-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: default avatarJohn Allen <john.allen@amd.com>
Link: https://lore.kernel.org/r/20250919223258.1604852-38-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent c5ba4945

arch/x86/kvm/svm/svm.c

+11 −0
Original line number Diff line number Diff line
@@ -3410,6 +3410,10 @@ static void dump_vmcb(struct kvm_vcpu *vcpu) 
	       "rip:", save->rip, "rflags:", save->rflags);

	pr_err("%-15s %016llx %-13s %016llx\n",

	       "rsp:", save->rsp, "rax:", save->rax);

	pr_err("%-15s %016llx %-13s %016llx\n",

	       "s_cet:", save->s_cet, "ssp:", save->ssp);

	pr_err("%-15s %016llx\n",

	       "isst_addr:", save->isst_addr);

	pr_err("%-15s %016llx %-13s %016llx\n",

	       "star:", save01->star, "lstar:", save01->lstar);

	pr_err("%-15s %016llx %-13s %016llx\n",
@@ -3434,6 +3438,13 @@ static void dump_vmcb(struct kvm_vcpu *vcpu) 
		pr_err("%-15s %016llx\n",

		       "sev_features", vmsa->sev_features);



		pr_err("%-15s %016llx %-13s %016llx\n",

		       "pl0_ssp:", vmsa->pl0_ssp, "pl1_ssp:", vmsa->pl1_ssp);

		pr_err("%-15s %016llx %-13s %016llx\n",

		       "pl2_ssp:", vmsa->pl2_ssp, "pl3_ssp:", vmsa->pl3_ssp);

		pr_err("%-15s %016llx\n",

		       "u_cet:", vmsa->u_cet);



		pr_err("%-15s %016llx %-13s %016llx\n",

		       "rax:", vmsa->rax, "rbx:", vmsa->rbx);

		pr_err("%-15s %016llx %-13s %016llx\n",