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Re: [Xen-devel] [PATCH] xen/x86: Adjust stack pointer in xen_sysexit

On 11/17/2015 02:16 PM, Andy Lutomirski wrote:
Looks good to me.  Does Xen have any sysexit/sysret32 equivalent to
return to 32-bit user mode?  If so, it could be worth trying to wire
it up by patching the jz instead of the test instruction.

We can actually make patching a little bit more efficient by replacing the test instruction with 'xor %eax,%eax'. That way we won't need any 'nop's.


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