xsrc/47099: Running NetBSD 6 as VMware workstation guest, starting X hangs when NetBSD is allocated >1 CPUs

[guohouzuo%gmail.com@localhost]

>Number:         47099
>Category:       xsrc
>Synopsis:       Running NetBSD as vmware workstation guest, starting X hangs 
>when NetBSD is allocated > 1 CPUs
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    xsrc-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Oct 20 21:50:01 +0000 2012
>Originator:     Howard Guo
>Release:        NetBSD 6.0
>Organization:
>Environment:
        
        
System: NetBSD howard.houzuo.net 6.0 NetBSD 6.0 (GENERIC) amd64
Architecture: x86_64
Machine: amd64
>Description:
In xorg.conf, input device uses "vmmouse" driver and graphical device uses 
"vmware" driver.
In ".xinitrc", I specify either startxfce4 or startkde (both of them may be 
used to replicate this issue).
Run `startx`. If NetBSD is allocated more than 1 CPU core, it will hang and 
NetBSD loses responsiveness totally. Host CPU usage on the allocated cores will 
be 100%.
If NetBSD is allocated only one CPU core, `startx` will work reliably.
>How-To-Repeat:
1. Allocate 2, 4 or 8 CPU cores to NetBSD guest
2. Run `startx`
3. Observe that NetBSD loses responsiveness and host CPU core usage on the 
allocated cores are 100%

>Fix:
`startx` never has a problem when NetBSD runs on only one CPU core.

>Unformatted: