KVM internal error with some amounts of guest memory

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Now that's something else.  Reported by a debian user, but
trivially reproducible.

$ kvm -m 1.4g
KVM internal error. Suberror: 1
emulation failure
EAX=000e3c54 EBX=00000000 ECX=00000000 EDX=00000cfd
ESI=00000000 EDI=00000000 EBP=00000000 ESP=00006fe8
EIP=000f309b EFL=00000016 [----AP-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
SS =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
FS =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
GS =0010 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT=     000fd3a8 00000037
IDT=     000fd3e6 00000000
CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000000
Code=ff ff ba 59 00 00 00 a8 10 89 d8 75 09 b9 ef 2f ff ff ff d1 <eb> 23 59 5b 5e e9 4a ff ff ff 31 d2 89 f0 e8 6c fa ff ff 89 c6 85 c0 79 ab c7 04 24 8c 4c

This is 1.1.

-m 1.5g works.  -no-kvm works.

What's that? :)

Thanks,

/mjt
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