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------------[ cut here ]------------ WARNING: CPU: 7 PID: 3861 at /home/kernel/ssd/kvm/arch/x86/kvm//vmx.c:11299 nested_vmx_vmexit+0x176e/0x1980 [kvm_intel] CPU: 7 PID: 3861 Comm: qemu-system-x86 Tainted: G W OE 4.13.0-rc4+ #11 RIP: 0010:nested_vmx_vmexit+0x176e/0x1980 [kvm_intel] Call Trace: ? kvm_multiple_exception+0x149/0x170 [kvm] ? handle_emulation_failure+0x79/0x230 [kvm] ? load_vmcs12_host_state+0xa80/0xa80 [kvm_intel] ? check_chain_key+0x137/0x1e0 ? reexecute_instruction.part.168+0x130/0x130 [kvm] nested_vmx_inject_exception_vmexit+0xb7/0x100 [kvm_intel] ? nested_vmx_inject_exception_vmexit+0xb7/0x100 [kvm_intel] vmx_queue_exception+0x197/0x300 [kvm_intel] kvm_arch_vcpu_ioctl_run+0x1b0c/0x2c90 [kvm] ? kvm_arch_vcpu_runnable+0x220/0x220 [kvm] ? preempt_count_sub+0x18/0xc0 ? restart_apic_timer+0x17d/0x300 [kvm] ? kvm_lapic_restart_hv_timer+0x37/0x50 [kvm] ? kvm_arch_vcpu_load+0x1d8/0x350 [kvm] kvm_vcpu_ioctl+0x4e4/0x910 [kvm] ? kvm_vcpu_ioctl+0x4e4/0x910 [kvm] ? kvm_dev_ioctl+0xbe0/0xbe0 [kvm] The flag "nested_run_pending", which can override the decision of which should run next, L1 or L2. nested_run_pending=1 means that we *must* run L2 next, not L1. This is necessary in particular when L1 did a VMLAUNCH of L2 and therefore expects L2 to be run (and perhaps be injected with an event it specified, etc.). Nested_run_pending is especially intended to avoid switching to L1 in the injection decision-point. This can be handled just like the other cases in vmx_check_nested_events, instead of having a special case in vmx_queue_exception. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.