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Date: Mon, 15 Sep 2025 15:18:59 -0700
From: Nathan Chancellor <nathan@kernel.org>
To: Tariq Toukan <tariqt@nvidia.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
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	Saeed Mahameed <saeedm@nvidia.com>,
	Leon Romanovsky <leon@kernel.org>, Mark Bloch <mbloch@nvidia.com>,
	Sabrina Dubroca <sd@queasysnail.net>, netdev@vger.kernel.org,
	linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
	Gal Pressman <gal@nvidia.com>, Leon Romanovsky <leonro@nvidia.com>,
	Jason Gunthorpe <jgg@nvidia.com>,
	Michael Guralnik <michaelgur@nvidia.com>,
	Moshe Shemesh <moshe@nvidia.com>, Will Deacon <will@kernel.org>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
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	Borislav Petkov <bp@alien8.de>,
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	Patrisious Haddad <phaddad@nvidia.com>
Subject: Re: [PATCH net-next V2] net/mlx5: Improve write-combining test
 reliability for ARM64 Grace CPUs
Message-ID: <20250915221859.GB925462@ax162>
References: <1757925308-614943-1-git-send-email-tariqt@nvidia.com>
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In-Reply-To: <1757925308-614943-1-git-send-email-tariqt@nvidia.com>

On Mon, Sep 15, 2025 at 11:35:08AM +0300, Tariq Toukan wrote:
...
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
> index d77696f46eb5..06d0eb190816 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
> @@ -176,3 +176,9 @@ mlx5_core-$(CONFIG_PCIE_TPH) += lib/st.o
>  
>  obj-$(CONFIG_MLX5_DPLL) += mlx5_dpll.o
>  mlx5_dpll-y :=	dpll.o
> +
> +#
> +# NEON WC specific for mlx5
> +#
> +mlx5_core-$(CONFIG_KERNEL_MODE_NEON) += lib/wc_neon_iowrite64_copy.o
> +FLAGS_lib/wc_neon_iowrite64_copy.o += $(CC_FLAGS_FPU)

Does this work as is? I think this needs to be CFLAGS instead of FLAGS
but I did not test to verify.

Cheers,
Nathan