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net/mlx5: Switch to more abstract scoped ksimd guard API on arm64

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Instead of calling kernel_neon_begin/end directly, switch to the scoped
guard API which encapsulates those calls. This is needed because the
prototypes of those APIs are going to be modified and will require a
kernel mode FP/SIMD buffer to be provided, which the scoped guard API
will do transparently.

Cc: Saeed Mahameed <saeedm@nvidia.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Tariq Toukan <tariqt@nvidia.com>
Cc: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel
2025-10-08 17:22:36 +02:00
parent ab5718f06b
commit 9dc106fa1e
1 changed files with 10 additions and 9 deletions
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19
drivers/net/ethernet/mellanox/mlx5/core/wc.c
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@@ -9,6 +9,7 @@
#if IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && IS_ENABLED(CONFIG_ARM64)
#include <asm/neon.h>
#include <asm/simd.h>
#endif
#define TEST_WC_NUM_WQES 255
@@ -264,15 +265,15 @@ static void mlx5_iowrite64_copy(struct mlx5_wc_sq *sq, __be32 mmio_wqe[16],
{
#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"
"ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%0]\n\t"
"st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%1]"
:
: "r"(mmio_wqe), "r"(sq->bfreg.map + offset)
: "memory", "v0", "v1", "v2", "v3");
kernel_neon_end();
scoped_ksimd() {
asm volatile(
".arch_extension simd\n\t"
"ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%0]\n\t"
"st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%1]"
:
: "r"(mmio_wqe), "r"(sq->bfreg.map + offset)
: "memory", "v0", "v1", "v2", "v3");
}
return;
}
#endif