Re: [PATCH 09/12] hv_netvsc: Remove second mapping of send and recv buffers

[Tianyu Lan]

On 10/21/2022 1:57 AM, Michael Kelley wrote:
> With changes to how Hyper-V guest VMs flip memory between private
> (encrypted) and shared (decrypted), creating a second kernel virtual
> mapping for shared memory is no longer necessary.  Everything needed
> for the transition to shared is handled by set_memory_decrypted().
>
> As such, remove the code to create and manage the second
> mapping for the pre-allocated send and recv buffers.  This mapping
> is the last user of hv_map_memory()/hv_unmap_memory(), so delete
> these functions as well.  Finally, hv_map_memory() is the last
> user of vmap_pfn() in Hyper-V guest code, so remove the Kconfig
> selection of VMAP_PFN.
>
> Signed-off-by: Michael Kelley<mikelley@xxxxxxxxxxxxx>

Reviewed-by: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>