qemu hardware error

KVM: entry failed, hardware error 0x80000021

If you're running a guest on an Intel machine without unrestricted mode
support, the failure can be most likely due to the guest entering an invalid
state for Intel VT. For example, the guest maybe running in big real mode
which is not supported on less recent Intel processors.

EAX=00000010 EBX=000000e0 ECX=00000000 EDX=0000ffe0
ESI=0025a65c EDI=0007a65c EBP=00007c00 ESP=00000200
EIP=000000ca EFL=00000002 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0
ES =0020 00000200 0000ffff 0000f300
CS =b000 002b0000 0000ffff 0000f300
SS =0020 00000200 0000ffff 0000f300
DS =0020 00000200 0000ffff 0000f300
FS =0020 00000200 0000ffff 0000f300
GS =0020 00000200 0000ffff 0000f300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT=     002b0000 0000001f
IDT=     00000000 000003ff
CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000000
Code=00 ea be 00 00 00 18 00 0f 20 c0 66 25 fe ff 00 00 0f 22 c0 <66> 31 c0 8e d8 8e c0 8e d0 66 bc 00 04 00 00 8e e0 8e e8 ea 00 00 00 20 00 00 00 20 5c a6