Re: [Xen-devel] [PATCH 17/19] x86/vmce, tools/libxl: expose LMCE capability in guest MSR_IA32_MCG_CAP

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Fri, Feb 17, 2017 at 02:39:34PM +0800, Haozhong Zhang wrote:
> If LMCE is supported by host and "lmce = 1" is present in xl config, the
> LMCE capability will be exposed in guest MSR_IA32_MCG_CAP. By default,
> LMCE is not exposed to guest so as to keep the backwards migration
> compatibility.
> 
> Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>

Sorry for this stupid question: what does L in LMCE stand for? Googling
LMCE doesn't return useful result.

>  
>  int libxl__build_pre(libxl__gc *gc, uint32_t domid,
> diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
> index a612d1f..3cb0d9a 100644
> --- a/tools/libxl/libxl_types.idl
> +++ b/tools/libxl/libxl_types.idl
> @@ -550,6 +550,7 @@ libxl_domain_build_info = Struct("domain_build_info",[
>                                         ("serial_list",      
> libxl_string_list),
>                                         ("rdm", libxl_rdm_reserve),
>                                         ("rdm_mem_boundary_memkb", MemKB),
> +                                       ("lmce",             libxl_defbool),

You also need to add LIBXL_HAVE_LMCE to libxl.h.

Wei.

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