[Xen-bugs] [Bug 20] LTP fork05 test crashes dom0

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http://bugzilla.xensource.com/cgi-bin/bugzilla/show_bug.cgi?id=20





------- Additional Comments From kaf24@xxxxxxxxxxxx  2005-05-08 08:49 -------
If you're trying to work out how the crash occurs you want to disable ptwr 
batching in do_ptwr_fault()
in arch/x86/mm.c. To do this, turn the '#ifdef __x86_64__ goto emulate' into 
'#if 1 goto emulate'. This
will cause a crash within XenLinux at the very instruction that writes a bad 
page-table entry, rather than
crashing sometime later when a batch of pagetable updates get validated. Much 
more useful!




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