Re: [Xen-devel] [PATCH v3 6/9] x86/vmce, tools/libxl: expose LMCE capability in guest MSR_IA32_MCG_CAP

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.03.17 at 08:20, <haozhong.zhang@xxxxxxxxx> wrote:
> If LMCE is supported by host and ' mca_caps = [ "lmce" ] ' 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>

Hypervisor side
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

For the tools side, doesn't the new HVM param need saving /
restoring? If so an addition to the array in
tools/libxc/xc_sr_save_x86_hvm.c:write_hvm_params() is going
to be needed.

Jan


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