/boot/retpoline-4.4.0-1020-kvm is in linux-image-4.4.0-1020-kvm 4.4.0-1020.25.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | kvm-intel.ko vmx_handle_external_intr callq *%rdx
vmlinux .altinstr_replacement callq *%rbx
vmlinux .altinstr_replacement jmpq *%r10
vmlinux .altinstr_replacement jmpq *%r11
vmlinux .altinstr_replacement jmpq *%r12
vmlinux .altinstr_replacement jmpq *%r13
vmlinux .altinstr_replacement jmpq *%r14
vmlinux .altinstr_replacement jmpq *%r15
vmlinux .altinstr_replacement jmpq *%r8
vmlinux .altinstr_replacement jmpq *%r9
vmlinux .altinstr_replacement jmpq *%rax
vmlinux .altinstr_replacement jmpq *%rbp
vmlinux .altinstr_replacement jmpq *%rbx
vmlinux .altinstr_replacement jmpq *%rcx
vmlinux .altinstr_replacement jmpq *%rdi
vmlinux .altinstr_replacement jmpq *%rdx
vmlinux .altinstr_replacement jmpq *%rsi
vmlinux .altinstr_replacement jmpq *%rsp
vmlinux __x86_indirect_thunk_r10 jmpq *%r10
vmlinux __x86_indirect_thunk_r11 jmpq *%r11
vmlinux __x86_indirect_thunk_r12 jmpq *%r12
vmlinux __x86_indirect_thunk_r13 jmpq *%r13
vmlinux __x86_indirect_thunk_r14 jmpq *%r14
vmlinux __x86_indirect_thunk_r15 jmpq *%r15
vmlinux __x86_indirect_thunk_r8 jmpq *%r8
vmlinux __x86_indirect_thunk_r9 jmpq *%r9
vmlinux __x86_indirect_thunk_rax jmpq *%rax
vmlinux __x86_indirect_thunk_rbp jmpq *%rbp
vmlinux __x86_indirect_thunk_rbx jmpq *%rbx
vmlinux __x86_indirect_thunk_rcx jmpq *%rcx
vmlinux __x86_indirect_thunk_rdi jmpq *%rdi
vmlinux __x86_indirect_thunk_rdx jmpq *%rdx
vmlinux __x86_indirect_thunk_rsi jmpq *%rsi
vmlinux __x86_indirect_thunk_rsp jmpq *%rsp
vmlinux efi_call callq *%rdi
vmlinux em_loop callq *%rdx
vmlinux fastop callq *%rsi
vmlinux ret_from_fork callq *%rbx
vmlinux secondary_startup_64 jmpq *%rax
vmlinux x86_emulate_insn callq *%rax
vmlinux x86_emulate_insn callq *%rax
vmlinux x86_emulate_insn callq *%rax
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