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Re: [Xen-devel] [PATCH] xen/x86: Adjust stack pointer in xen_sysexit
On 11/17/2015 02:37 PM, Boris Ostrovsky wrote:
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.
Nevermind that, we are looking at flags, not register.
-boris
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