Re: [Xen-devel] [PATCH for-4.9] x86/vmx: Shorten vmx_{get, set}_segment_register() for user segments

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> Sent: Wednesday, November 16, 2016 9:42 PM
> 
> On 26/10/16 14:15, Andrew Cooper wrote:
> > The x86_segment enumeration matches hardware SReg encoding, which can be 
> > used
> > to calculate the appropriate VMCS fields, rather than open coding every
> > instance.
> >
> > This reduces the size of the switch statement, and the number of embedded 
> > BUG
> > frames from the __vm{read,write}() calls.  In the unlikely case that a call
> > does fault, the field can unambiguously be retrieved from the GPR state
> > printed.
> >
> > Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> > ---
> > CC: Jan Beulich <JBeulich@xxxxxxxx>
> > CC: Jun Nakajima <jun.nakajima@xxxxxxxxx>
> > CC: Kevin Tian <kevin.tian@xxxxxxxxx>
> 
> Intel: Ping?

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>


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