Re: Is espfix64's double-fault thing OK on Xen?

From: Konrad Rzeszutek Wilk
Date: Mon Jul 14 2014 - 12:58:53 EST

On Wed, Jul 09, 2014 at 04:17:57PM -0700, Andy Lutomirski wrote:
> 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

Let me rope in David, who was playing with that recently.

> --Andy
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