Commit 22f5c200 authored by Tom Lendacky's avatar Tom Lendacky Committed by Sean Christopherson
Browse files

KVM: SVM: Dump guest register state in dump_vmcb() 



Guest register state can be useful when debugging, include it as part
of dump_vmcb().

Signed-off-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
Acked-by: default avatarBorislav Petkov (AMD) <bp@alien8.de>
Tested-by: default avatarKim Phillips <kim.phillips@amd.com>
Link: https://lore.kernel.org/r/a4131a10c082a93610cac12b35dca90292e50f50.1742477213.git.thomas.lendacky@amd.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 962e2b61

arch/x86/kvm/svm/svm.c

+53 −0
Original line number Diff line number Diff line
@@ -3522,6 +3522,59 @@ static void dump_vmcb(struct kvm_vcpu *vcpu) 
	       "excp_from:", save->last_excp_from,

	       "excp_to:", save->last_excp_to);



	if (sev_es_guest(vcpu->kvm)) {

		struct sev_es_save_area *vmsa = (struct sev_es_save_area *)save;



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

		       "sev_features", vmsa->sev_features);



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

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

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

		       "rcx:", vmsa->rcx, "rdx:", vmsa->rdx);

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

		       "rsi:", vmsa->rsi, "rdi:", vmsa->rdi);

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

		       "rbp:", vmsa->rbp, "rsp:", vmsa->rsp);

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

		       "r8:", vmsa->r8, "r9:", vmsa->r9);

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

		       "r10:", vmsa->r10, "r11:", vmsa->r11);

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

		       "r12:", vmsa->r12, "r13:", vmsa->r13);

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

		       "r14:", vmsa->r14, "r15:", vmsa->r15);

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

		       "xcr0:", vmsa->xcr0, "xss:", vmsa->xss);

	} else {

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

		       "rax:", save->rax, "rbx:",

		       vcpu->arch.regs[VCPU_REGS_RBX]);

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

		       "rcx:", vcpu->arch.regs[VCPU_REGS_RCX],

		       "rdx:", vcpu->arch.regs[VCPU_REGS_RDX]);

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

		       "rsi:", vcpu->arch.regs[VCPU_REGS_RSI],

		       "rdi:", vcpu->arch.regs[VCPU_REGS_RDI]);

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

		       "rbp:", vcpu->arch.regs[VCPU_REGS_RBP],

		       "rsp:", save->rsp);

#ifdef CONFIG_X86_64

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

		       "r8:", vcpu->arch.regs[VCPU_REGS_R8],

		       "r9:", vcpu->arch.regs[VCPU_REGS_R9]);

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

		       "r10:", vcpu->arch.regs[VCPU_REGS_R10],

		       "r11:", vcpu->arch.regs[VCPU_REGS_R11]);

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

		       "r12:", vcpu->arch.regs[VCPU_REGS_R12],

		       "r13:", vcpu->arch.regs[VCPU_REGS_R13]);

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

		       "r14:", vcpu->arch.regs[VCPU_REGS_R14],

		       "r15:", vcpu->arch.regs[VCPU_REGS_R15]);

#endif

	}



no_vmsa:

	if (sev_es_guest(vcpu->kvm))

		sev_free_decrypted_vmsa(vcpu, save);