Re: [Xen-devel] [PATCH v2] vVMX: use latched VMCS machine address

2016-02-25 Thread Tian, Kevin
> From: Jan Beulich [mailto:jbeul...@suse.com] > Sent: Thursday, February 25, 2016 7:58 PM > > Instead of calling domain_page_map_to_mfn() over and over, latch the > guest VMCS machine address unconditionally (i.e. independent of whether > VMCS shadowing is supported by the hardware). > > Since

[Xen-devel] [PATCH v2] vVMX: use latched VMCS machine address

2016-02-25 Thread Jan Beulich
Instead of calling domain_page_map_to_mfn() over and over, latch the guest VMCS machine address unconditionally (i.e. independent of whether VMCS shadowing is supported by the hardware). Since this requires altering the parameters of __[gs]et_vmcs{,_real}() (and hence all their callers) anyway,