Re: [PATCH V3 vfio 01/14] net/mlx5: Introduce ifc bits for pre_copy

From: Alex Williamson <alex.williamson@redhat.com>
To: Yishai Hadas <yishaih@nvidia.com>
Cc: <jgg@nvidia.com>, <kvm@vger.kernel.org>, <kevin.tian@intel.com>,
	<joao.m.martins@oracle.com>, <leonro@nvidia.com>,
	<shayd@nvidia.com>, <maorg@nvidia.com>, <avihaih@nvidia.com>,
	<cohuck@redhat.com>, <shameerali.kolothum.thodi@huawei.com>,
	saeedm@nvidia.com
Subject: Re: [PATCH V3 vfio 01/14] net/mlx5: Introduce ifc bits for pre_copy
Date: Mon, 5 Dec 2022 08:22:00 -0700	[thread overview]
Message-ID: <20221205082200.6667589c.alex.williamson@redhat.com> (raw)
In-Reply-To: <20221205144838.245287-2-yishaih@nvidia.com>

On Mon, 5 Dec 2022 16:48:25 +0200
Yishai Hadas <yishaih@nvidia.com> wrote:

> From: Shay Drory <shayd@nvidia.com>
> 
> Introduce ifc related stuff to enable PRE_COPY of VF during migration.
> 
> Signed-off-by: Shay Drory <shayd@nvidia.com>
> Signed-off-by: Yishai Hadas <yishaih@nvidia.com>

This will need an ack from Leon or Saeed to go through the vfio tree.
Thanks,

Alex

> ---
>  include/linux/mlx5/mlx5_ifc.h | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
> index 5a4e914e2a6f..230a96626a5f 100644
> --- a/include/linux/mlx5/mlx5_ifc.h
> +++ b/include/linux/mlx5/mlx5_ifc.h
> @@ -1882,7 +1882,12 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
>  	u8	   max_reformat_remove_size[0x8];
>  	u8	   max_reformat_remove_offset[0x8];
>  
> -	u8	   reserved_at_c0[0xe0];
> +	u8	   reserved_at_c0[0x8];
> +	u8	   migration_multi_load[0x1];
> +	u8	   migration_tracking_state[0x1];
> +	u8	   reserved_at_ca[0x16];
> +
> +	u8	   reserved_at_e0[0xc0];
>  
>  	u8	   reserved_at_1a0[0xb];
>  	u8	   log_min_mkey_entity_size[0x5];
> @@ -11918,7 +11923,8 @@ struct mlx5_ifc_query_vhca_migration_state_in_bits {
>  	u8         reserved_at_20[0x10];
>  	u8         op_mod[0x10];
>  
> -	u8         reserved_at_40[0x10];
> +	u8         incremental[0x1];
> +	u8         reserved_at_41[0xf];
>  	u8         vhca_id[0x10];
>  
>  	u8         reserved_at_60[0x20];
> @@ -11944,7 +11950,9 @@ struct mlx5_ifc_save_vhca_state_in_bits {
>  	u8         reserved_at_20[0x10];
>  	u8         op_mod[0x10];
>  
> -	u8         reserved_at_40[0x10];
> +	u8         incremental[0x1];
> +	u8         set_track[0x1];
> +	u8         reserved_at_42[0xe];
>  	u8         vhca_id[0x10];
>  
>  	u8         reserved_at_60[0x20];