Bug 680983

Summary: RFE: ACPI doesn't use global lock
Product: Red Hat Enterprise Linux 7 Reporter: Alex Williamson <alex.williamson>
Component: qemu-kvmAssignee: Alex Williamson <alex.williamson>
Status: CLOSED DEFERRED QA Contact: Virtualization Bugs <virt-bugs>
Severity: low Docs Contact:
Priority: medium    
Version: 7.0CC: bsarathy, chayang, flang, juzhang, knoel, mkenneth, pbonzini, tburke, virt-maint
Target Milestone: rcKeywords: FutureFeature
Target Release: 7.0   
Hardware: x86_64   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
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Last Closed: 2013-11-05 22:30:06 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 580953    

Description Alex Williamson 2011-02-28 17:19:34 UTC 
Description of problem:
We don't seem to be providing or making use of the ACPI global lock when manipulating data structures shared between qemu and the OSPM.  For instance, piix4_device_hotplug clears and sets bits in pci0_status that could be simultaneously in use by the OSPM.  It seems like we need to add global lock support and audit all shared data accesses for such races.

Version-Release number of selected component (if applicable):
qemu-kvm-0.12.1.2-2.148.el6

How reproducible:
n/a

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