linux-kernel - [PATCH 6/7] KVM: SVM: Dump FRED context in dump

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Message-ID: <20260129063653.3553076-7-shivansh.dhiman@amd.com>
Date: Thu, 29 Jan 2026 06:36:52 +0000
From: Shivansh Dhiman <shivansh.dhiman@....com>
To: <seanjc@...gle.com>, <pbonzini@...hat.com>,
	<linux-kernel@...r.kernel.org>, <kvm@...r.kernel.org>
CC: <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
	<dave.hansen@...ux.intel.com>, <x86@...nel.org>, <hpa@...or.com>,
	<xin@...or.com>, <nikunj.dadhania@....com>, <santosh.shukla@....com>
Subject: [PATCH 6/7] KVM: SVM: Dump FRED context in dump_vmcb()

Add fields related to FRED to dump_vmcb() to dump FRED context.

Signed-off-by: Shivansh Dhiman <shivansh.dhiman@....com>
---
 arch/x86/kvm/svm/svm.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 374589784206..954df4eae90e 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -3319,6 +3319,8 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
 	pr_err("%-20s%016llx\n", "vmsa_pa:", control->vmsa_pa);
 	pr_err("%-20s%016llx\n", "allowed_sev_features:", control->allowed_sev_features);
 	pr_err("%-20s%016llx\n", "guest_sev_features:", control->guest_sev_features);
+	pr_err("%-20s%016llx\n", "exit_int_data:", control->exit_int_data);
+	pr_err("%-20s%016llx\n", "event_inj_data:", control->event_inj_data);
 
 	if (sev_es_guest(vcpu->kvm)) {
 		save = sev_decrypt_vmsa(vcpu);
@@ -3434,6 +3436,25 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
 		       "r14:", vmsa->r14, "r15:", vmsa->r15);
 		pr_err("%-15s %016llx %-13s %016llx\n",
 		       "xcr0:", vmsa->xcr0, "xss:", vmsa->xss);
+
+		pr_err("%-27s %d %-18s%016llx\n",
+		       "is_fred_enabled:", is_fred_enabled(vcpu),
+		       "guest_evntinjdata:", vmsa->guest_event_inj_data);
+		pr_err("%-12s %016llx %-18s%016llx\n",
+		       "fred_config:", vmsa->fred_config,
+		       "guest_exitintdata:", vmsa->guest_exit_int_data);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_rsp0:", vmsa->fred_rsp0,
+		       "fred_rsp1:", vmsa->fred_rsp1);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_rsp2:", vmsa->fred_rsp2,
+		       "fred_rsp3:", vmsa->fred_rsp3);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_stklvls:", vmsa->fred_stklvls,
+		       "fred_ssp1:", vmsa->fred_ssp1);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_ssp2:", vmsa->fred_ssp2,
+		       "fred_ssp3:", vmsa->fred_ssp3);
 	} else {
 		pr_err("%-15s %016llx %-13s %016lx\n",
 		       "rax:", save->rax, "rbx:",
@@ -3461,6 +3482,24 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
 		       "r14:", vcpu->arch.regs[VCPU_REGS_R14],
 		       "r15:", vcpu->arch.regs[VCPU_REGS_R15]);
 #endif
+		pr_err("%-26s %d %-18s %016llx\n",
+		       "is_fred_enabled:", is_fred_enabled(vcpu),
+		       "guest_evntinjdata:", save->guest_event_inj_data);
+		pr_err("%-12s%016llx %-18s%016llx\n",
+		       "fred_config:", save->fred_config,
+		       "guest_exitintdata:", save->guest_exit_int_data);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_rsp0:", save->fred_rsp0,
+		       "fred_rsp1:", save->fred_rsp1);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_rsp2:", save->fred_rsp2,
+		       "fred_rsp3:", save->fred_rsp3);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_stklvls:", save->fred_stklvls,
+		       "fred_ssp1:", save->fred_ssp1);
+		pr_err("%-15s %016llx %-13s %016llx\n",
+		       "fred_ssp2:", save->fred_ssp2,
+		       "fred_ssp3:", save->fred_ssp3);
 	}
 
 no_vmsa:
-- 
2.43.0