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Bug 680983 - RFE: ACPI doesn't use global lock
Summary: RFE: ACPI doesn't use global lock
Keywords:
Status: CLOSED DEFERRED
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: x86_64
OS: Unspecified
medium
low
Target Milestone: rc
: 7.0
Assignee: Alex Williamson
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 580953
TreeView+ depends on / blocked
 
Reported: 2011-02-28 17:19 UTC by Alex Williamson
Modified: 2013-11-05 22:30 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-11-05 22:30:06 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

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

Steps to Reproduce:
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Actual results:


Expected results:


Additional info:
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