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failed to boot a customized kernel if emulating Broadwell/Skylake
Hardware: X86-64, Intel(R) Core(TM) i7-6500U( Skylake)
OS: Linux Mint 18
Host Kernel: 4.5.7 + PaX/Grsecurity
Qemu: QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.2)
[Reproduction Steps]
1, Install a Debian 8 in the guest
2, Install a customized kernel( using same config to Debian 8)
3, Reboot:
qemu-system-x86_64 -hda debian8-test.img -boot d -m 2048 -enable-kvm -usb -usbdevice tablet -net nic -net tap,ifname=tap0,script=no -cpu Broadwell -smp 2
or
qemu-system-x86_64 -hda debian8-test.img -boot d -m 2048 -enable-kvm -usb -usbdevice tablet -net nic -net tap,ifname=tap0,script=no -cpu host -smp 2
[Actual Result]
kernel panic or can't login in the system
[Workaround]
qemu-system-x86_64 -hda debian8-test.img -boot d -m 2048 -enable-kvm -usb -usbdevice tablet -net nic -net tap,ifname=tap0,script=no -cpu Haswell -smp 2
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