LKML: Tom Lendacky: [PATCH 2/5] KVM: SVM: Dump guest register state in dump

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Lendacky</a><ul><li><a href="/lkml/2025/3/21/877">Tom Lendacky</a><ul><li><a href="/lkml/2025/3/21/887">Tom Lendacky</a></li></ul></li><li><a href="/lkml/2025/3/24/1406">Tom Lendacky</a></li></ul></li><li><a href="/lkml/2025/3/20/737">Tom Lendacky</a></li><li><a href="/lkml/2025/3/20/738">Tom Lendacky</a></li><li><a href="/lkml/2025/3/20/739">Tom Lendacky</a></li><li class="origin"><a href="">Tom Lendacky</a></li><li><a href="/lkml/2025/3/20/827">Borislav Petkov</a><ul><li><a href="/lkml/2025/3/21/1243">Kim Phillips</a></li></ul></li></ul></li></ul><div class="threadlist">Patch in this message</div><ul class="threadlist"><li><a href="/lkml/diff/2025/3/20/744/1">Get diff 1</a></li></ul></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerl.gif" width="32" height="32" alt="/" /></td><td class="c" rowspan="2" valign="top" style="padding-top: 1em"><table><tr><td><table><tr><td class="lp">From</td><td class="rp" itemprop="author">Tom Lendacky <></td></tr><tr><td class="lp">Subject</td><td class="rp" itemprop="name">[PATCH 2/5] KVM: SVM: Dump guest register state in dump_vmcb()</td></tr><tr><td class="lp">Date</td><td class="rp" itemprop="datePublished">Thu, 20 Mar 2025 08:26:50 -0500</td></tr></table></td><td></td></tr></table><pre itemprop="articleBody">Guest register state can be useful when debugging, include it as part<br />of dump_vmcb().<br /><br />Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com><br />---<br /> arch/x86/kvm/svm/svm.c | 53 ++++++++++++++++++++++++++++++++++++++++++<br /> 1 file changed, 53 insertions(+)<br /><br />diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c<br />index 21477871073c..5ed6009bcf69 100644<br />--- a/arch/x86/kvm/svm/svm.c<br />+++ b/arch/x86/kvm/svm/svm.c<br />@@ -3503,6 +3503,59 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)<br /> "excp_from:", save->last_excp_from,<br /> "excp_to:", save->last_excp_to);<br /> <br />+ if (sev_es_guest(vcpu->kvm)) {<br />+ struct sev_es_save_area *vmsa = (struct sev_es_save_area *)save;<br />+<br />+ pr_err("%-15s %016llx\n",<br />+ "sev_features", vmsa->sev_features);<br />+<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "rax:", vmsa->rax, "rbx:", vmsa->rbx);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "rcx:", vmsa->rcx, "rdx:", vmsa->rdx);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "rsi:", vmsa->rsi, "rdi:", vmsa->rdi);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "rbp:", vmsa->rbp, "rsp:", vmsa->rsp);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "r8:", vmsa->r8, "r9:", vmsa->r9);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "r10:", vmsa->r10, "r11:", vmsa->r11);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "r12:", vmsa->r12, "r13:", vmsa->r13);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "r14:", vmsa->r14, "r15:", vmsa->r15);<br />+ pr_err("%-15s %016llx %-13s %016llx\n",<br />+ "xcr0:", vmsa->xcr0, "xss:", vmsa->xss);<br />+ } else {<br />+ pr_err("%-15s %016llx %-13s %016lx\n",<br />+ "rax:", save->rax, "rbx:",<br />+ vcpu->arch.regs[VCPU_REGS_RBX]);<br />+ pr_err("%-15s %016lx %-13s %016lx\n",<br />+ "rcx:", vcpu->arch.regs[VCPU_REGS_RCX],<br />+ "rdx:", vcpu->arch.regs[VCPU_REGS_RDX]);<br />+ pr_err("%-15s %016lx %-13s %016lx\n",<br />+ "rsi:", vcpu->arch.regs[VCPU_REGS_RSI],<br />+ "rdi:", vcpu->arch.regs[VCPU_REGS_RDI]);<br />+ pr_err("%-15s %016lx %-13s %016llx\n",<br />+ "rbp:", vcpu->arch.regs[VCPU_REGS_RBP],<br />+ "rsp:", save->rsp);<br />+#ifdef CONFIG_X86_64<br />+ pr_err("%-15s %016lx %-13s %016lx\n",<br />+ "r8:", vcpu->arch.regs[VCPU_REGS_R8],<br />+ "r9:", vcpu->arch.regs[VCPU_REGS_R9]);<br />+ pr_err("%-15s %016lx %-13s %016lx\n",<br />+ "r10:", vcpu->arch.regs[VCPU_REGS_R10],<br />+ "r11:", vcpu->arch.regs[VCPU_REGS_R11]);<br />+ pr_err("%-15s %016lx %-13s %016lx\n",<br />+ "r12:", vcpu->arch.regs[VCPU_REGS_R12],<br />+ "r13:", vcpu->arch.regs[VCPU_REGS_R13]);<br />+ pr_err("%-15s %016lx %-13s %016lx\n",<br />+ "r14:", vcpu->arch.regs[VCPU_REGS_R14],<br />+ "r15:", vcpu->arch.regs[VCPU_REGS_R15]);<br />+#endif<br />+ }<br />+<br /> no_vmsa:<br /> if (sev_es_guest(vcpu->kvm))<br /> sev_free_decrypted_vmsa(vcpu, save);<br />-- <br />2.46.2<br /><br /></pre></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerr.gif" width="32" height="32" alt="\" /></td></tr><tr><td align="right" valign="bottom"> 聽 </td></tr><tr><td align="right" valign="bottom">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerl.gif" width="32" height="32" alt="\" /></td><td class="c">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerr.gif" width="32" height="32" alt="/" /></td></tr><tr><td align="right" valign="top" colspan="2"> 聽 </td><td class="lm">Last update: 2025-03-20 14:33 聽聽 [W:0.397 / U:0.849 seconds]<br />漏2003-2020 <a href="http://blog.jasper.es/"><span itemprop="editor">Jasper Spaans</span></a>|hosted at <a 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LKML: Tom Lendacky: [PATCH 2/5] KVM: SVM: Dump guest register state in dump_vmcb()