dlan17/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

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

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Kim Phillips <kim.phillips@amd.com>
Link: https://lore.kernel.org/r/a4131a10c082a93610cac12b35dca90292e50f50.1742477213.git.thomas.lendacky@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Tom Lendacky
2025-04-25 16:19:52 -07:00
committed by Sean Christopherson
parent 962e2b6152
commit 22f5c2003a
1 changed files with 53 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/x86/kvm/svm/svm.c
+53
View File
@@ -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);