Re: [PATCH v6 0/4] ARM: vfp: Introduce vfp_state_hold() to acquire VFP context.

[PATCH v6 0/4] ARM: vfp: Introduce vfp_state_hold() to acquire VFP context. · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-07-01
[PATCH v6 1/4] ARM: vfp: Provide vfp_state_hold() for VFP locking. · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-07-01
[PATCH v6 4/4] ARM: vfp: Move sending signals outside of vfp_state_hold()ed section. · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-07-01
[PATCH v6 3/4] ARM: vfp: Use vfp_state_hold() in vfp_support_entry(). · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-07-01
[PATCH v6 2/4] ARM: vfp: Use vfp_state_hold() in vfp_sync_hwstate(). · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-07-01
Re: [PATCH v6 0/4] ARM: vfp: Introduce vfp_state_hold() to acquire VFP context. · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-08-08
Re: [PATCH v6 0/4] ARM: vfp: Introduce vfp_state_hold() to acquire VFP context. · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2024-10-02

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2024-08-08 09:18:26

On 2024-07-01 12:56:52 [+0200], To linux-arm-kernel@lists.infradead.org wrote:

There was a bug report on PREEMPT_RT which made me look into VFP locking
on ARM. The usage of local_bh_disable() to ensure exclusive access to
the VFP unit is not working on PREEMPT_RT because the softirq context is
preemptible.

This series introduces vfp_vfp_state_hold() which does the right thing.

is this okay now?

Sebastian

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