netdev - RE: [PATCH rdma-next 01/13] RDMA/mana_ib: Allow registration of DMA-mapped memory in PDs

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Message-ID:
 <SA6PR21MB4231B2C714A7944F39BD464ECEE02@SA6PR21MB4231.namprd21.prod.outlook.com>
Date: Thu, 23 Jan 2025 05:17:01 +0000
From: Long Li <longli@...rosoft.com>
To: Konstantin Taranov <kotaranov@...ux.microsoft.com>, Konstantin Taranov
	<kotaranov@...rosoft.com>, Shiraz Saleem <shirazsaleem@...rosoft.com>,
	"pabeni@...hat.com" <pabeni@...hat.com>, Haiyang Zhang
	<haiyangz@...rosoft.com>, KY Srinivasan <kys@...rosoft.com>,
	"edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org"
	<kuba@...nel.org>, "davem@...emloft.net" <davem@...emloft.net>, Dexuan Cui
	<decui@...rosoft.com>, "wei.liu@...nel.org" <wei.liu@...nel.org>,
	"sharmaajay@...rosoft.com" <sharmaajay@...rosoft.com>, "jgg@...pe.ca"
	<jgg@...pe.ca>, "leon@...nel.org" <leon@...nel.org>
CC: "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>
Subject: RE: [PATCH rdma-next 01/13] RDMA/mana_ib: Allow registration of
 DMA-mapped memory in PDs

> Subject: [PATCH rdma-next 01/13] RDMA/mana_ib: Allow registration of DMA-
> mapped memory in PDs
> 
> From: Konstantin Taranov <kotaranov@...rosoft.com>
> 
> Allow the HW to register DMA-mapped memory for kernel-level PDs.
> 
> Signed-off-by: Konstantin Taranov <kotaranov@...rosoft.com>
> Reviewed-by: Shiraz Saleem <shirazsaleem@...rosoft.com>

Reviewed-by: Long Li <longli@...rosoft.com>

> ---
>  drivers/infiniband/hw/mana/main.c | 3 +++
>  include/net/mana/gdma.h           | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/infiniband/hw/mana/main.c
> b/drivers/infiniband/hw/mana/main.c
> index 67c2d43..45b251b 100644
> --- a/drivers/infiniband/hw/mana/main.c
> +++ b/drivers/infiniband/hw/mana/main.c
> @@ -82,6 +82,9 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata
> *udata)
>  	mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req),
>  			     sizeof(resp));
> 
> +	if (!udata)
> +		flags |= GDMA_PD_FLAG_ALLOW_GPA_MR;
> +
>  	req.flags = flags;
>  	err = mana_gd_send_request(gc, sizeof(req), &req,
>  				   sizeof(resp), &resp);
> diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index
> 90f5665..03e1b25 100644
> --- a/include/net/mana/gdma.h
> +++ b/include/net/mana/gdma.h
> @@ -775,6 +775,7 @@ struct gdma_destroy_dma_region_req {
> 
>  enum gdma_pd_flags {
>  	GDMA_PD_FLAG_INVALID = 0,
> +	GDMA_PD_FLAG_ALLOW_GPA_MR = 1,
>  };
> 
>  struct gdma_create_pd_req {
> --
> 2.43.0