ARM: 9425/1: vfp: Use vfp_state_hold() in vfp_support_entry().

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vfp_entry() is invoked from exception handler and is fully preemptible.
It uses local_bh_disable() to remain uninterrupted while checking the
VFP state.
This is not working on PREEMPT_RT because local_bh_disable()
synchronizes the relevant section but the context remains fully
preemptible.

Use vfp_state_hold() for uninterrupted access.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

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Sebastian Andrzej Siewior 2024-10-02 17:18:11 +01:00 • committed by Russell King (Oracle)

parent b54cdbad4a

commit 27035c23ba

1 changed files with 3 additions and 3 deletions

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arch/arm/vfp/vfpmodule.c

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