reply to Jan Kiszka: I looked at the patch in uq/master branch in qemu-kvm.git as you mentioned. There's another issue in uq/master branch, so I can't conclude whether your patch will make a difference.
The issue is Windows(e.g. win7) will get a BSOD with a message "STOP: ox0000005D". RAW Windows image or qcow image will have the same BSOD issue. And Linux guest also has similar issue with uq/master branch. You can use the following commit in uq/master branch to have a try. commit: d3d3bef0a (before your patch "i8254: Fix conversion of in-kernel to userspace state") latest commit: 0cdd3d14 (already included your pathch) And, qemu-kvm.git master branch (18b01275) doesn't have the BSOD issue. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1002121 Title: disk error when guest boot up via qcow2 image Status in QEMU: New Bug description: Host OS (ia32/ia32e/IA64): ia32e Guest OS (ia32/ia32e/IA64): ia32e Guest OS Type (Linux/Windows): Linux(rhel6u1) kvm.git Commit: 51bfd2998113e1f8ce8dcf853407b76a04b5f2a0 qemu-kvm Commit: e54f008ef8f968cfc2f3ecab78491d180fa31efc Host Kernel Version:3.4.0-rc7 Hardware: WSM-EP, Romley-EP Bug detailed description: -------------------------- If I boot up a guest using qcow2 image, the guest show “disk read error”. If you press some key to continue, after being automatically repaired, the guest can boot up. This should be a qemu-kvm regression. kvm + qemu-kvm = result 51bfd299 + e54f008e = bad 51bfd299 + b320b8b7 = good Note: 1. guest rhel6u1, guest show “disk error” guest rhel6u2, guest show black screen this phenomenon occurs at the first time to create guest 2. create guest with raw image, this phenomenon doesn’t appear. Reproduce steps: ---------------- 1.start up a host with kvm (commit: 51bfd299) and use qemu-kvm (commit:e54f008e) 2.qemu-img create –b /share/ia32e_rhel6u1.img –f qcow2 /root/rhel6u1.qcow 3.qemu-system-x86_64 -mem 1024 –hda /root/rhel6u1.qcow Current result: ---------------- Guest console shows: error 25:Disk read error Prss any key to continue... Expected result: ---------------- Guest boot up correctly To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1002121/+subscriptions
