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Bug 947441 - HPET device must be disabled
Summary: HPET device must be disabled
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Miroslav Rezanina
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 720747 895240 980873 987757
TreeView+ depends on / blocked
 
Reported: 2013-04-02 12:36 UTC by Paolo Bonzini
Modified: 2014-06-18 03:24 UTC (History)
8 users (show)

Fixed In Version: qemu-kvm-1.5.3-7.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-06-13 10:43:42 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Paolo Bonzini 2013-04-02 12:36:43 UTC 
We do not support the HPET.  CONFIG_HPET must be removed from default-configs/*-softmmu.mak.

See bug 495851 [Hpet support (HAL timer tests failed SVVP testing)].
Comment 2 Miroslav Rezanina 2013-04-23 09:45:20 UTC 
Fixed in qemu-kvm-1.4.0-3.el7.x86_64.rpm
Comment 3 Miroslav Rezanina 2013-09-26 09:32:55 UTC 
Fix included in qemu-kvm-1.5.3-7.el7
Comment 5 Qian Guo 2013-11-04 08:44:40 UTC 
Reproduced this bug with 
qemu-kvm-1.4.0-1.el7.x86_64

Steps
1. Start a rhel7 guest like this:
# /usr/libexec/qemu-kvm -cpu Penryn -enable-kvm -m 4096 -smp 4,sockets=1,cores=4,threads=1 -name rhel7base -drive file=/home/rhel7base.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,werror=stop,rerror=stop,aio=native -device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk0 -boot menu=on -monitor stdio -spice disable-ticketing,port=5930,seamless-migration=on -vga qxl -global qxl-vga.vram_size=67108864 -device virtio-balloon-pci,id=balloon1 -qmp tcp:0:4446,server,nowait

2. In guest check the available_clocksource:
# cat /sys/devices/system/clocksource/clocksource0/available_clocksource
kvm-clock tsc hpet acpi_pm 

There's hpet that available in guest, so the hpet is enabled by default, the bug is reproduced

Verify this bug with qemu-kvm-1.5.3-11.el7.x86_64

Steps:
1. Start the same guest as above :
# /usr/libexec/qemu-kvm -cpu Penryn -enable-kvm -m 4096 -smp 4,sockets=1,cores=4,threads=1 -name rhel7base -drive file=/home/rhel7base.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,werror=stop,rerror=stop,aio=native -device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk0 -boot menu=on -monitor stdio -spice disable-ticketing,port=5930,seamless-migration=on -vga qxl -global qxl-vga.vram_size=67108864 -device virtio-balloon-pci,id=balloon1 -qmp tcp:0:4446,server,nowait

2. In guest check the available_clocksource:
# cat /sys/devices/system/clocksource/clocksource0/available_clocksource
kvm-clock tsc acpi_pm

There's no hpet.

So according to above, this bug is fixed by qemu-kvm-1.5.3-11.el7.x86_64
Comment 7 Ludek Smid 2014-06-13 10:43:42 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.
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