Re: [PATCH v3] x86/Hyper-V: Support for free page reporting

[Wei Liu]

On Wed, Jan 06, 2021 at 11:20:33PM +0000, Sunil Muthuswamy wrote:
> Linux has support for free page reporting now (36e66c554b5c) for
> virtualized environment. On Hyper-V when virtually backed VMs are
> configured, Hyper-V will advertise cold memory discard capability,
> when supported. This patch adds the support to hook into the free
> page reporting infrastructure and leverage the Hyper-V cold memory
> discard hint hypercall to report/free these pages back to the host.
> 
> Signed-off-by: Sunil Muthuswamy <sunilmut@xxxxxxxxxxxxx>
> Tested-by: Matheus Castello <matheus@xxxxxxxxxxxxxxx>

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