RE: [Xen-devel] [PATCH][2/6] add call entry for vmx guest

["Ling, Xiaofeng" <xiaofeng.ling@xxxxxxxxx>]

Ian and Keir
     Do you have more suggestion beside the seperate hypercall table for 
para-driver?
some other possible alternative:
1. move the change to grant_table.c to vmx.c, and use a virtual_device_op to 
setup up the grant 
table share page so that grant_table.c don't need change.
2. move the logic of copying hypercall paramter to share page to hypervisor 
instead of in guest.
then share page is not needed. but the copy overhead maybe bigger because each 
copy need to map.


Ling, Xiaofeng <> wrote:
> Attach is the alternative patch to use a separate hypercall table for
> vmx guest. 
> 
> Xiaofeng Ling <> wrote:
>> This patch add the entry to hypercall for vmx guest.
>> vmx guest use vmcall to invoke hypercall.
>> This patch use the original hypercall table with a permit check.
>> If you think use a seperate table it better, I'll send another patch
>> later.

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