[Xen-bugs] [Bug 36] GPF in Xen during ptwr update

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http://bugzilla.xensource.com/cgi-bin/bugzilla/show_bug.cgi?id=36

kaf24@xxxxxxxxxxxx changed:

           What    |Removed                     |Added
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             Status|NEW                         |ASSIGNED



------- Additional Comments From kaf24@xxxxxxxxxxxx  2005-05-13 08:18 -------
The GPF is triggered by a hardware interrupt, so the stack backtrace won't help 
for this bug. The GPF 
error code indicates that the fault is caused by a hardware interrupt 
attempting to jump through 
interrupt vector 0x20. This ought to be valid: it is the vector programmed into 
the legacy PIC for irq0 
(timer interrupt).

It is probably worth dumping the contents of idt_table[] (one idt entry per 
line, printing index + 
word1(hex) + word2(hex)), or at least the contents of idt_table[0x20]. Also 
boot with 'apic=debug' and 
see if that gives any useful diagnostics during boot.




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