Bug 239249

Summary: XEN DOM0 Kernel does not detect multiple processors
Product: [Fedora] Fedora Reporter: Sam Bingner <sam>
Component: kernel-xenAssignee: Xen Maintainance List <xen-maint>
Status: CLOSED NEXTRELEASE QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: rawhideCC: bstein, xen-maint
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Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2007-05-07 16:01:19 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
messages from xen bootup none

Description Sam Bingner 2007-05-07 00:35:07 UTC 
Description of problem:
XEN DOM0 kernel does not detect all 4 processors in my system.  If I run "xm
vcpu-set 0 4" it causes a crash and a system freeze.

Version-Release number of selected component (if applicable): 2.6.20-2925.5.fc7xen


How reproducible:
1. Boot 2.6.20-2925.5.fc7xen with xen on a multi-processor system
2. To duplicate crash, run "xm vcpu-set 0 2"
 
Actual results:
Kernel sees a single processor

Expected results:
Kernel sees four processors (or however many are present)

Additional info: DMESG and crash message from attempted "xm vcpu-set 0 4" attached
Comment 1 Sam Bingner 2007-05-07 00:35:07 UTC 
Created attachment 154235 [details]
messages from xen bootup
Comment 2 Chris Wright 2007-05-07 16:01:19 UTC 
This has been fixed in BZ 238015 (there are a couple patches in that BZ if
you are eager to test it out), just hasn't made it into latest rawhide
yet.  I hadn't tested vcpu-set when I fixed SMP, but I'm sure it's from
the same source issue...Yes, just tested and vcpu-set works as expected
in a fixed kernel.