lkml.org 
[lkml]   [2024]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v2 15/25] KVM: VMX: Dump FRED context in dump_vmcs()
    Date
    Add FRED related VMCS fields to dump_vmcs() to have it dump FRED context.

    Signed-off-by: Xin Li <xin3.li@intel.com>
    Tested-by: Shan Kang <shan.kang@intel.com>
    ---

    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 | 46 +++++++++++++++++++++++++++++++++++-------
    1 file changed, 39 insertions(+), 7 deletions(-)

    diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
    index a484b9ac2400..e3409607122d 100644
    --- a/arch/x86/kvm/vmx/vmx.c
    +++ b/arch/x86/kvm/vmx/vmx.c
    @@ -6392,7 +6392,7 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
    struct vcpu_vmx *vmx = 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;

    @@ -6403,6 +6403,8 @@ void dump_vmcs(struct kvm_vcpu *vcpu)

    vmentry_ctl = vmcs_read32(VM_ENTRY_CONTROLS);
    vmexit_ctl = vmcs_read32(VM_EXIT_CONTROLS);
    + secondary_vmexit_ctl = cpu_has_secondary_vmexit_ctrls() ?
    + vmcs_read64(SECONDARY_VM_EXIT_CONTROLS) : 0;
    cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
    pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
    cr4 = vmcs_readl(GUEST_CR4);
    @@ -6449,6 +6451,19 @@ 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);
    +#ifdef CONFIG_X86_64
    + if (kvm_is_fred_enabled(vcpu)) {
    + pr_err("FRED guest: config=0x%016llx, stack levels=0x%016llx\n"
    + "RSP0=0x%016lx, RSP1=0x%016llx\n"
    + "RSP2=0x%016llx, RSP3=0x%016llx\n",
    + vmcs_read64(GUEST_IA32_FRED_CONFIG),
    + vmcs_read64(GUEST_IA32_FRED_STKLVLS),
    + read_msr(MSR_IA32_FRED_RSP0),
    + vmcs_read64(GUEST_IA32_FRED_RSP1),
    + vmcs_read64(GUEST_IA32_FRED_RSP2),
    + vmcs_read64(GUEST_IA32_FRED_RSP3));
    + }
    +#endif
    efer_slot = vmx_find_loadstore_msr_slot(&vmx->msr_autoload.guest, MSR_EFER);
    if (vmentry_ctl & VM_ENTRY_LOAD_IA32_EFER)
    pr_err("EFER= 0x%016llx\n", vmcs_read64(GUEST_IA32_EFER));
    @@ -6496,6 +6511,19 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
    vmcs_readl(HOST_TR_BASE));
    pr_err("GDTBase=%016lx IDTBase=%016lx\n",
    vmcs_readl(HOST_GDTR_BASE), vmcs_readl(HOST_IDTR_BASE));
    +#ifdef CONFIG_X86_64
    + if (kvm_cpu_cap_has(X86_FEATURE_FRED)) {
    + pr_err("FRED host: config=0x%016llx, stack levels=0x%016llx\n"
    + "RSP0=0x%016llx, RSP1=0x%016llx\n"
    + "RSP2=0x%016llx, RSP3=0x%016llx\n",
    + vmcs_read64(HOST_IA32_FRED_CONFIG),
    + vmcs_read64(HOST_IA32_FRED_STKLVLS),
    + vmx->msr_host_fred_rsp0,
    + vmcs_read64(HOST_IA32_FRED_RSP1),
    + vmcs_read64(HOST_IA32_FRED_RSP2),
    + vmcs_read64(HOST_IA32_FRED_RSP3));
    + }
    +#endif
    pr_err("CR0=%016lx CR3=%016lx CR4=%016lx\n",
    vmcs_readl(HOST_CR0), vmcs_readl(HOST_CR3),
    vmcs_readl(HOST_CR4));
    @@ -6517,25 +6545,29 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
    pr_err("*** Control State ***\n");
    pr_err("CPUBased=0x%08x SecondaryExec=0x%08x TertiaryExec=0x%016llx\n",
    cpu_based_exec_ctrl, secondary_exec_control, tertiary_exec_control);
    - pr_err("PinBased=0x%08x EntryControls=%08x ExitControls=%08x\n",
    - pin_based_exec_ctrl, vmentry_ctl, vmexit_ctl);
    + pr_err("PinBased=0x%08x EntryControls=0x%08x\n",
    + pin_based_exec_ctrl, vmentry_ctl);
    + pr_err("ExitControls=0x%08x SecondaryExitControls=0x%016llx\n",
    + vmexit_ctl, secondary_vmexit_ctl);
    pr_err("ExceptionBitmap=%08x PFECmask=%08x PFECmatch=%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=%08x errcode=%08x ilen=%08x\n",
    + pr_err("VMEntry: intr_info=%08x errcode=%08x ilen=%08x event data=%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_DATA) : 0);
    pr_err("VMExit: intr_info=%08x errcode=%08x ilen=%08x\n",
    vmcs_read32(VM_EXIT_INTR_INFO),
    vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
    vmcs_read32(VM_EXIT_INSTRUCTION_LEN));
    pr_err(" reason=%08x qualification=%016lx\n",
    vmcs_read32(VM_EXIT_REASON), vmcs_readl(EXIT_QUALIFICATION));
    - pr_err("IDTVectoring: info=%08x errcode=%08x\n",
    + pr_err("IDTVectoring: info=%08x errcode=%08x event data=%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_DATA) : 0);
    pr_err("TSC Offset = 0x%016llx\n", vmcs_read64(TSC_OFFSET));
    if (secondary_exec_control & SECONDARY_EXEC_TSC_SCALING)
    pr_err("TSC Multiplier = 0x%016llx\n",
    --
    2.43.0

    \
     
     \ /
      Last update: 2024-02-07 19:05    [W:4.282 / U:0.056 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site