realmode in ubuntu_kvm_unit_tests failed on Trusty

[Po-Hsu Lin]

# TESTNAME=realmode TIMEOUT=90s ACCEL= ./x86/run x86/realmode.flat -smp 1
timeout -k 1s --foreground 90s /usr/bin/qemu-system-x86_64 -nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device pci-testdev -machine accel=kvm -kernel x86/realmode.flat -smp 1 # -initrd /tmp/tmp.Onqv4FRzvE
PASS: null
PASS: shld
PASS: push/pop 1
PASS: push/pop 2
PASS: push/pop 3
PASS: push/pop 4
PASS: push/pop 5
PASS: push/pop 6
PASS: push/pop with high bits set in %esp
PASS: pusha/popa 1
PASS: pusha/popa 1
PASS: mov 1
PASS: mov 2
PASS: mov 3
PASS: mov 4
PASS: mov 5
PASS: cmp 1
PASS: cmp 2
PASS: cmp 3
PASS: add 1
PASS: add 2
PASS: sub 1
PASS: sub 2
PASS: sub 3
PASS: sub 4
PASS: xor 1
PASS: xor 2
PASS: xor 3
PASS: xor 4
PASS: pio 1
PASS: pio 2
PASS: pio 3
PASS: pio 4
PASS: pio 5
PASS: pio 6
PASS: clc
PASS: stc
PASS: cli
PASS: sti
PASS: cld
PASS: std
PASS: jnz short 1
PASS: jnz short 2
PASS: jmp short 1
PASS: jnz near 1
PASS: jnz near 2
PASS: jmp near 1
PASS: call 1
PASS: call near 1
PASS: call near 2
PASS: call far 1
PASS: call far 2
PASS: ret imm 1
PASS: retf imm 1
PASS: jmp far 1
PASS: xchg 1
PASS: xchg 2
PASS: xchg 3
PASS: xchg 4
PASS: xchg 5
PASS: xchg 6
PASS: xchg 7
PASS: xchg 8
PASS: iret 1
PASS: iret 2
PASS: iret 3
PASS: rflags.rf
PASS: iret 4
PASS: int 1
PASS: imul 1
PASS: imul 2
PASS: imul 3
PASS: imul 4
PASS: imul 5
PASS: imul 6
PASS: mul 1
PASS: mul 2
PASS: mul 3
PASS: div 1
PASS: div 2
PASS: div 3
PASS: idiv 1
PASS: idiv 2
PASS: idiv 3
PASS: LOOPcc short 1
PASS: LOOPcc short 2
PASS: LOOPcc short 3
PASS: cbq 1
PASS: cwde 1
PASS: cwd 1
PASS: cwd 2
PASS: cdq 1
PASS: cdq 2
PASS: DAS
PASS: lds
PASS: les
PASS: lfs
PASS: lgs
PASS: lss
PASS: jcxz short 1
PASS: jcxz short 2
PASS: jcxz short 3
PASS: jecxz short 1
PASS: jecxz short 2
PASS: cpuid
PASS: ss relative addressing (1)
PASS: ss relative addressing (2)
PASS: sgdt
PASS: sidt
PASS: lahf
PASS: sahf
PASS: movsx
PASS: movzx
PASS: movsx ah
PASS: movzx ah
PASS: bswap
PASS: aad
PASS: aam
PASS: xlat
PASS: salc (1)
PASS: salc (2)
PASS: fninit
PASS: mov dr with mod bits
FAIL: smsw
PASS: nopl
PASS: xadd
1 cycles/emulated jump instruction
0 cycles/emulated move instruction
0 cycles/emulated arithmetic instruction
0 cycles/emulated memory load instruction
0 cycles/emulated memory store instruction
5 cycles/emulated memory RMW instruction

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-169-generic 3.13.0-169.219
ProcVersionSignature: User Name 3.13.0-169.219-generic 3.13.11-ckt39
Uname: Linux 3.13.0-169-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.29
Architecture: amd64
Date: Thu Apr 11 06:37:17 2019
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)