This bug has been copied from bug #533090 and has been proposed to be backported to 5.4 z-stream (EUS).
Followed steps on #533090#18 all (SMP=1/2 tablet=yes/no) passed on kvm-83-105.el5_4.18 [qemu-kvm cmd] # /usr/libexec/qemu-kvm -m 2048 -smp 2 -drive file=win2k8r2-64bit-virtio.qcow2,if=ide,cache=off,boot=on -net nic,model=rtl8139,vlan=1,macaddr=DE:AD:BE:EF:59:22 -net tap,vlan=1,script=/etc/qemu-ifup -boot c -uuid 2b97e0b2-1a57-4de2-b575-f25a45d0a064 -usbdevice tablet -no-hpet -rtc-td-hack -no-kvm-pit-reinjection -monitor stdio -notify all -cpu qemu64,+sse2 -balloon none -vnc :1 -incoming "exec:cat /root/533090sn" [host info] kernel 2.6.18-164.9.1.el5 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9600B Quad-Core Processor ... flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc pni cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy altmovcr8 abm sse4a misalignsse 3dnowprefetch osvw [guest info]
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0088.html