From: Jason Gunthorpe <jgg@nvidia.com>
To: Patrisious Haddad <phaddad@nvidia.com>
Cc: Tariq Toukan <tariqt@nvidia.com>,
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Subject: Re: [PATCH net-next V5] net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
Date: Thu, 25 Sep 2025 09:21:39 -0300 [thread overview]
Message-ID: <20250925122139.GW2617119@nvidia.com> (raw)
In-Reply-To: <d548b14e-ae28-4807-9b29-9961543ea549@nvidia.com>
On Thu, Sep 25, 2025 at 03:15:46PM +0300, Patrisious Haddad wrote:
>
> On 9/25/2025 2:54 PM, Jason Gunthorpe wrote:
> > On Thu, Sep 25, 2025 at 02:48:33PM +0300, Tariq Toukan wrote:
> > > +static void mlx5_iowrite64_copy(struct mlx5_wc_sq *sq, __be32 mmio_wqe[16],
> > > + size_t mmio_wqe_size, unsigned int offset)
> > > +{
> > > +#if defined(CONFIG_KERNEL_MODE_NEON) && defined(CONFIG_ARM64)
> > IS_ENABLED() not defined()
> I just wonder why, Is there a preference in the driver from like
> aesthetic/convention point of view?
> Since here it technically doesnt matter - IS_ENABLED have no functional
> difference from defined since these are boolean configs not *tristate*ones
> (cant be loaded as module).
I think it is an aesthetic convention to avoid defined(CONFIG_*) as
the reasoning it is not tristate is a bit tricky.
Jason
next prev parent reply other threads:[~2025-09-25 12:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-25 11:48 [PATCH net-next V5] net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs Tariq Toukan
2025-09-25 11:54 ` Jason Gunthorpe
2025-09-25 12:15 ` Patrisious Haddad
2025-09-25 12:21 ` Jason Gunthorpe [this message]
2025-09-25 13:05 ` Arnd Bergmann
2025-09-25 20:30 ` Nathan Chancellor
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