RE: [Xen-devel] [PATCH] small adjustment to asm constraints forc/s19400

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

>>> "Tian, Kevin" <kevin.tian@xxxxxxxxx> 31.03.09 11:26 >>>
>>From: Jan Beulich
>>Assuming this is an Intel box, the guest is certainly using 
>>sysenter (which the user mode EIP saved on the stack would 
>>also suggest), so you're really after the three SYSENTER MSRs. 
>>And indeed - restore_rest_processor_state() seems to only care 
>>for the STAR ones.
>>
>
>There are also some set of registers save/restored in assembly code
>in wakeup_prot.S, such as segment selectors, CRs, etc.

Sure, but just grep-ing for MSR_IA32_SYSENTER across all of xen/ shows
that the suspend/resume paths don't seem to consider them at all.

Jan


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