riscv: cpufeature: add validation for zfa, zfh and zfhmin

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[ Upstream commit 2e2cf5581f ]

These extensions depends on the F one. Add a validation callback
checking for the F extension to be present. Now that extensions are
correctly reported using the F/D presence, we can remove the
has_fpu() check in hwprobe_isa_ext0().

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250527100001.33284-1-cleger@rivosinc.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Clément Léger 2025-05-27 12:00:00 +02:00 • committed by Greg Kroah-Hartman

parent 4305480542

commit b8759add75

2 changed files with 9 additions and 11 deletions

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6

arch/riscv/kernel/cpufeature.c

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14

arch/riscv/kernel/sys_hwprobe.c

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