Re: [Xen-devel] [PATCH 04/10] x86/spec_ctrl: Fold the XEN_IBRS_{SET, CLEAR} ALTERNATIVES together

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Fri, May 11, 2018 at 11:38:08AM +0100, Andrew Cooper wrote:
> Currently, the SPEC_CTRL_{ENTRY,EXIT}_* macros encode Xen's choice of
> MSR_SPEC_CTRL as an immediate constant, and chooses between IBRS or not by
> doubling up the entire alternative block.
> 
> There is now a variable holding Xen's choice of value, so use that and
> simplify the alternatives.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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