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arm64/fpsimd: Don't warn when EFI execution context is preemptible

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Kernel mode FP/SIMD no longer requires preemption to be disabled, so
only warn on uses of FP/SIMD from preemptible context if the fallback
path is taken for cases where kernel mode NEON would not be allowed
otherwise.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Ard Biesheuvel 2025-10-15 22:56:38 +02:00 committed by Catalin Marinas
parent a286050120
commit 1d038e8018
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/kernel/fpsimd.c
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@ -1934,11 +1934,11 @@ void __efi_fpsimd_begin(void)
if (!system_supports_fpsimd())
return;
WARN_ON(preemptible());
if (may_use_simd()) {
kernel_neon_begin();
} else {
WARN_ON(preemptible());
/*
* If !efi_sve_state, SVE can't be in use yet and doesn't need
* preserving: