Is espfix64's double-fault thing OK on Xen?
From: Andy Lutomirski
Date: Wed Jul 09 2014 - 19:18:33 EST
This part in __do_double_fault looks fishy:
cmpl $__KERNEL_CS,CS(%rdi)
jne do_double_fault
Shouldn't that be:
test $3,CS(%rdi)
jnz do_double_fault
--Andy
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