Bug 1190307
Summary: | 3.18.4-200.fc21 (and later) cause guest/host CPU compatibility failures | ||
---|---|---|---|
Product: | [Fedora] Fedora | Reporter: | Bill Nottingham <notting> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | unspecified | Docs Contact: | |
Priority: | unspecified | ||
Version: | 21 | CC: | gansalmon, itamar, jonathan, jtomko, kernel-maint, madhu.chinakonda, mchehab, philipp |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2015-02-10 10:06:51 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Bill Nottingham
2015-02-07 02:06:35 UTC
The virtual machine asks for a CPU with those features, but they are not provided by the host. Try changing the CPU manually to omit those features: <cpu mode="custom" match="exact"> <model fallback="forbid">Haswell</model> <feature policy='disable' name='rtm'/> <feature policy='disable' name='hle'/> </cpu> *** This bug has been marked as a duplicate of bug 1182650 *** As a bit more information, Intel pushed a firmware update that disabled the rtm/hle operations entirely because the TSX support in Haswell is broken in the chip. It works... until it doesn't. Fedora includes that microcode update and it is applied during early boot now. |