* [PATCH] arm64/fpsimd: Remove spurious check for SVE support
@ 2024-01-15 19:53 Mark Brown
2024-01-18 12:02 ` Will Deacon
0 siblings, 1 reply; 2+ messages in thread
From: Mark Brown @ 2024-01-15 19:53 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon
Cc: Dave Martin, linux-arm-kernel, linux-kernel, Mark Brown
There is no need to check for SVE support when changing vector lengths,
even if the system is SME only we still need SVE storage for the streaming
SVE state.
Fixes: d4d5be94a878 (arm64/fpsimd: Ensure SME storage is allocated after SVE VL changes)
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/kernel/fpsimd.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 1559c706d32d..66b31cebead8 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -924,10 +924,8 @@ int vec_set_vector_length(struct task_struct *task, enum vec_type type,
* allocate SVE now in case it is needed for use in streaming
* mode.
*/
- if (system_supports_sve()) {
- sve_free(task);
- sve_alloc(task, true);
- }
+ sve_free(task);
+ sve_alloc(task, true);
if (free_sme)
sme_free(task);
---
base-commit: 0dd3ee31125508cd67f7e7172247f05b7fd1753a
change-id: 20240110-arm64-sve-enabled-check-73cdc0b7d998
Best regards,
--
Mark Brown <broonie@kernel.org>
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64/fpsimd: Remove spurious check for SVE support
2024-01-15 19:53 [PATCH] arm64/fpsimd: Remove spurious check for SVE support Mark Brown
@ 2024-01-18 12:02 ` Will Deacon
0 siblings, 0 replies; 2+ messages in thread
From: Will Deacon @ 2024-01-18 12:02 UTC (permalink / raw)
To: Mark Brown, Catalin Marinas
Cc: kernel-team, Will Deacon, linux-arm-kernel, Dave Martin,
linux-kernel
On Mon, 15 Jan 2024 19:53:01 +0000, Mark Brown wrote:
> There is no need to check for SVE support when changing vector lengths,
> even if the system is SME only we still need SVE storage for the streaming
> SVE state.
>
>
Applied to arm64 (for-next/core), thanks!
[1/1] arm64/fpsimd: Remove spurious check for SVE support
https://git.kernel.org/arm64/c/8410186ca480
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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