From nobody Thu Nov 28 15:50:29 2024 Received: from mail.zytor.com (terminus.zytor.com [198.137.202.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 86F1519307D; Tue, 1 Oct 2024 05:02:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.136 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727758938; cv=none; b=kGfm0Ee47BPtRmHDUSYFEUe5gxH0kZaJ25srouOdxjW+Tws9GErfowoMUwUnKDQCyIZIaDSNHd7Z0yDn2hQgw4tdEunpZgC1nl3H0p/g9D15WqUQ66kWnH5zScnznfibDuUjYwPxgckHMZZwLc5W9HjZUpxCv+QzOnh2H8YfVzs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727758938; c=relaxed/simple; bh=PJ0Ruvlhl5M8W6RSvcvYhSrLqloxjrMLxWnQr2qse80=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XzFbG0Qpc7PPmIuTOTEPhNlfR7KgwYirSh+M8H7oDArZZnoCKFwqFMQAEWf+Bg5gPnpNL2hxc90JWQEs0YXJu9N47lH1VlNDvKFhU7Riti8YdLuyf4sA3XEDlJV4jm3O2JNfBsoLNfvrEZ0bLn+fqnMV8HcikzsMBnDCGPz/hz0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com; spf=pass smtp.mailfrom=zytor.com; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b=jFou4zmL; arc=none smtp.client-ip=198.137.202.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zytor.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="jFou4zmL" Received: from terminus.zytor.com (terminus.zytor.com [IPv6:2607:7c80:54:3:0:0:0:136]) (authenticated bits=0) by mail.zytor.com (8.18.1/8.17.1) with ESMTPSA id 49151A7h3643828 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Mon, 30 Sep 2024 22:01:33 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.zytor.com 49151A7h3643828 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2024091601; t=1727758894; bh=CpAjqAnGmOHBrw112EUU3ecVY9Z5DDNeNfmxMbaNmvs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jFou4zmLraTdJHufGkOsayw4l/aOSyJ4anTJ2B064rz9sIG1j+h8IB7/xEHGK1bkZ KbJogd6IqMOpuBaT/mYK+yB/q/AsPADrF8hxDXA565IC+5HDgNOG3TE2SNxhmBVXZQ fTYJG9jtiT+XpGzY58BPoO5bPwl4IpjLIGSIXR0XB8SIKmgNUw0+WpvpaNxdFEf1GJ sDbV+GN/lQEoy5eoOUR1b+PZPeQKBuIIJgj6Yb8fMmpWdQSRrGcvx7mPzba9LaySIR sFw8cOtl1oFeP7JyFhl8VdNh7hyZTq/SS5pXLOqVDdcSNSga54+TU1ZEKpw6ZS3X2h sgz1njE6VIJAQ== From: "Xin Li (Intel)" To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: seanjc@google.com, pbonzini@redhat.com, corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, peterz@infradead.org, andrew.cooper3@citrix.com, xin@zytor.com Subject: [PATCH v3 18/27] KVM: VMX: Dump FRED context in dump_vmcs() Date: Mon, 30 Sep 2024 22:01:01 -0700 Message-ID: <20241001050110.3643764-19-xin@zytor.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241001050110.3643764-1-xin@zytor.com> References: <20241001050110.3643764-1-xin@zytor.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Xin Li Add FRED related VMCS fields to dump_vmcs() to dump FRED context. Signed-off-by: Xin Li Signed-off-by: Xin Li (Intel) Tested-by: Shan Kang --- Change since v2: * Use (vmentry_ctrl & VM_ENTRY_LOAD_IA32_FRED) instead of is_fred_enabled() (Chao Gao). Change since v1: * Use kvm_cpu_cap_has() instead of cpu_feature_enabled() (Chao Gao). * Dump guest FRED states only if guest has FRED enabled (Nikolay Borisov). --- arch/x86/kvm/vmx/vmx.c | 40 +++++++++++++++++++++++++++++++++------- 1 file changed, 33 insertions(+), 7 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index bfdd10773136..ef807194ccbd 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6399,7 +6399,7 @@ void dump_vmcs(struct kvm_vcpu *vcpu) struct vcpu_vmx *vmx =3D to_vmx(vcpu); u32 vmentry_ctl, vmexit_ctl; u32 cpu_based_exec_ctrl, pin_based_exec_ctrl, secondary_exec_control; - u64 tertiary_exec_control; + u64 tertiary_exec_control, secondary_vmexit_ctl; unsigned long cr4; int efer_slot; =20 @@ -6410,6 +6410,8 @@ void dump_vmcs(struct kvm_vcpu *vcpu) =20 vmentry_ctl =3D vmcs_read32(VM_ENTRY_CONTROLS); vmexit_ctl =3D vmcs_read32(VM_EXIT_CONTROLS); + secondary_vmexit_ctl =3D cpu_has_secondary_vmexit_ctrls() ? + vmcs_read64(SECONDARY_VM_EXIT_CONTROLS) : 0; cpu_based_exec_ctrl =3D vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); pin_based_exec_ctrl =3D vmcs_read32(PIN_BASED_VM_EXEC_CONTROL); cr4 =3D vmcs_readl(GUEST_CR4); @@ -6456,6 +6458,16 @@ void dump_vmcs(struct kvm_vcpu *vcpu) vmx_dump_sel("LDTR:", GUEST_LDTR_SELECTOR); vmx_dump_dtsel("IDTR:", GUEST_IDTR_LIMIT); vmx_dump_sel("TR: ", GUEST_TR_SELECTOR); + if (vmentry_ctl & VM_ENTRY_LOAD_IA32_FRED) + pr_err("FRED guest: config=3D0x%016llx, stack_levels=3D0x%016llx\n" + "RSP0=3D0x%016llx, RSP1=3D0x%016llx\n" + "RSP2=3D0x%016llx, RSP3=3D0x%016llx\n", + vmcs_read64(GUEST_IA32_FRED_CONFIG), + vmcs_read64(GUEST_IA32_FRED_STKLVLS), + __rdmsr(MSR_IA32_FRED_RSP0), + vmcs_read64(GUEST_IA32_FRED_RSP1), + vmcs_read64(GUEST_IA32_FRED_RSP2), + vmcs_read64(GUEST_IA32_FRED_RSP3)); efer_slot =3D vmx_find_loadstore_msr_slot(&vmx->msr_autoload.guest, MSR_E= FER); if (vmentry_ctl & VM_ENTRY_LOAD_IA32_EFER) pr_err("EFER=3D 0x%016llx\n", vmcs_read64(GUEST_IA32_EFER)); @@ -6503,6 +6515,16 @@ void dump_vmcs(struct kvm_vcpu *vcpu) vmcs_readl(HOST_TR_BASE)); pr_err("GDTBase=3D%016lx IDTBase=3D%016lx\n", vmcs_readl(HOST_GDTR_BASE), vmcs_readl(HOST_IDTR_BASE)); + if (vmexit_ctl & SECONDARY_VM_EXIT_LOAD_IA32_FRED) + pr_err("FRED host: config=3D0x%016llx, stack_levels=3D0x%016llx\n" + "RSP0=3D0x%016lx, RSP1=3D0x%016llx\n" + "RSP2=3D0x%016llx, RSP3=3D0x%016llx\n", + vmcs_read64(HOST_IA32_FRED_CONFIG), + vmcs_read64(HOST_IA32_FRED_STKLVLS), + (unsigned long)task_stack_page(current) + THREAD_SIZE, + vmcs_read64(HOST_IA32_FRED_RSP1), + vmcs_read64(HOST_IA32_FRED_RSP2), + vmcs_read64(HOST_IA32_FRED_RSP3)); pr_err("CR0=3D%016lx CR3=3D%016lx CR4=3D%016lx\n", vmcs_readl(HOST_CR0), vmcs_readl(HOST_CR3), vmcs_readl(HOST_CR4)); @@ -6524,25 +6546,29 @@ void dump_vmcs(struct kvm_vcpu *vcpu) pr_err("*** Control State ***\n"); pr_err("CPUBased=3D0x%08x SecondaryExec=3D0x%08x TertiaryExec=3D0x%016llx= \n", cpu_based_exec_ctrl, secondary_exec_control, tertiary_exec_control= ); - pr_err("PinBased=3D0x%08x EntryControls=3D%08x ExitControls=3D%08x\n", - pin_based_exec_ctrl, vmentry_ctl, vmexit_ctl); + pr_err("PinBased=3D0x%08x EntryControls=3D0x%08x\n", + pin_based_exec_ctrl, vmentry_ctl); + pr_err("ExitControls=3D0x%08x SecondaryExitControls=3D0x%016llx\n", + vmexit_ctl, secondary_vmexit_ctl); pr_err("ExceptionBitmap=3D%08x PFECmask=3D%08x PFECmatch=3D%08x\n", vmcs_read32(EXCEPTION_BITMAP), vmcs_read32(PAGE_FAULT_ERROR_CODE_MASK), vmcs_read32(PAGE_FAULT_ERROR_CODE_MATCH)); - pr_err("VMEntry: intr_info=3D%08x errcode=3D%08x ilen=3D%08x\n", + pr_err("VMEntry: intr_info=3D%08x errcode=3D%08x ilen=3D%08x event_data= =3D%016llx\n", vmcs_read32(VM_ENTRY_INTR_INFO_FIELD), vmcs_read32(VM_ENTRY_EXCEPTION_ERROR_CODE), - vmcs_read32(VM_ENTRY_INSTRUCTION_LEN)); + vmcs_read32(VM_ENTRY_INSTRUCTION_LEN), + kvm_cpu_cap_has(X86_FEATURE_FRED) ? vmcs_read64(INJECTED_EVENT_DAT= A) : 0); pr_err("VMExit: intr_info=3D%08x errcode=3D%08x ilen=3D%08x\n", vmcs_read32(VM_EXIT_INTR_INFO), vmcs_read32(VM_EXIT_INTR_ERROR_CODE), vmcs_read32(VM_EXIT_INSTRUCTION_LEN)); pr_err(" reason=3D%08x qualification=3D%016lx\n", vmcs_read32(VM_EXIT_REASON), vmcs_readl(EXIT_QUALIFICATION)); - pr_err("IDTVectoring: info=3D%08x errcode=3D%08x\n", + pr_err("IDTVectoring: info=3D%08x errcode=3D%08x event_data=3D%016llx\n", vmcs_read32(IDT_VECTORING_INFO_FIELD), - vmcs_read32(IDT_VECTORING_ERROR_CODE)); + vmcs_read32(IDT_VECTORING_ERROR_CODE), + kvm_cpu_cap_has(X86_FEATURE_FRED) ? vmcs_read64(ORIGINAL_EVENT_DAT= A) : 0); pr_err("TSC Offset =3D 0x%016llx\n", vmcs_read64(TSC_OFFSET)); if (secondary_exec_control & SECONDARY_EXEC_TSC_SCALING) pr_err("TSC Multiplier =3D 0x%016llx\n", --=20 2.46.2