From: Jason Gunthorpe <jgg@nvidia.com>
To: Paolo Abeni <pabeni@redhat.com>
Cc: Tariq Toukan <tariqt@nvidia.com>,
Saeed Mahameed <saeedm@nvidia.com>,
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"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH net-next V6] net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
Date: Wed, 1 Oct 2025 11:55:14 -0300 [thread overview]
Message-ID: <20251001145514.GC3024065@nvidia.com> (raw)
In-Reply-To: <651ee9fe-706e-4471-a71b-e7a12b42cc3e@redhat.com>
On Wed, Oct 01, 2025 at 11:28:09AM +0200, Paolo Abeni wrote:
> > +static void mlx5_iowrite64_copy(struct mlx5_wc_sq *sq, __be32 mmio_wqe[16],
> > + size_t mmio_wqe_size, unsigned int offset)
> > +{
> > +#if IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && IS_ENABLED(CONFIG_ARM64)
> > + if (cpu_has_neon()) {
> > + kernel_neon_begin();
> > + asm volatile
> > + (".arch_extension simd;\n\t"
>
> Here I'm observing build errors with aarch64-linux-gnu-gcc 12.1.1
> 20220507 (Red Hat Cross 12.1.1-1):
> /tmp/cchqHdeI.s: Assembler messages:
> /tmp/cchqHdeI.s:746: Error: unknown architectural extension `simd;'
This is a binutils error not gcc.. What is the binutils version?
2.30 is the lowest that v6.16 supports..
Jason
next prev parent reply other threads:[~2025-10-01 14:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-28 21:08 [PATCH net-next V6] net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs Tariq Toukan
2025-10-01 0:30 ` patchwork-bot+netdevbpf
2025-10-01 9:28 ` Paolo Abeni
2025-10-01 14:55 ` Jason Gunthorpe [this message]
2025-10-01 16:36 ` Nathan Chancellor
2025-10-01 16:45 ` Nathan Chancellor
2025-10-06 13:57 ` Sebastian Ott
2025-10-06 13:59 ` Arnd Bergmann
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