Bug 680983 - RFE: ACPI doesn't use global lock
RFE: ACPI doesn't use global lock
Status: CLOSED DEFERRED
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm (Show other bugs)
7.0
x86_64 Unspecified
medium Severity low
: rc
: 7.0
Assigned To: Alex Williamson
Virtualization Bugs
: FutureFeature
Depends On:
Blocks: 580953
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Reported: 2011-02-28 12:19 EST by Alex Williamson
Modified: 2013-11-05 17:30 EST (History)
9 users (show)

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Doc Type: Enhancement
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Last Closed: 2013-11-05 17:30:06 EST
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Description Alex Williamson 2011-02-28 12:19:34 EST
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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