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Subject: RE: [PATCH v2] common/mlx5: enable operation in iova virtual address
 mode
Date: Wed, 12 Apr 2023 21:15:11 +0200
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Thread-Topic: [PATCH v2] common/mlx5: enable operation in iova virtual address
 mode
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References: <20230412125320.8585-1-viacheslavo@nvidia.com>
 <20230412170723.20722-1-viacheslavo@nvidia.com>
From: =?iso-8859-1?Q?Morten_Br=F8rup?= <mb@smartsharesystems.com>
To: "Viacheslav Ovsiienko" <viacheslavo@nvidia.com>,
	<dev@dpdk.org>
Cc: <matan@nvidia.com>,
	<rasland@nvidia.com>,
	<orika@nvidia.com>
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> From: Viacheslav Ovsiienko [mailto:viacheslavo@nvidia.com]
> Sent: Wednesday, 12 April 2023 19.07
>=20
> The ConnectX NIC series hardware provides advanced internal
> MMU option and can operate directly over virtual addresses,
> the host software should not care about any virtual-to-physical
> address translations. It means the mlx5 PMDs can operate in DPDK
> IOVA VA (virtual address) mode transparently.
>=20
> To force IOVA VA mode the DPDK should be built with meson option:
>=20
>   enable_iova_as_pa=3Dfalse
>=20
> With this option only drivers supporting IOVA VA mode are enabled.
> This patch marks mlx5 drivers with require_iova_in_mbuf flag false
> value, thus allowing their compilation for IOVA VA mode.
>=20
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

Acked-by: Morten Br=F8rup <mb@smartsharesystems.com>