Re: [PATCH] xen/evtchn: Change irq_info lock to raw_spinlock_t

On Tue, Apr 06, 2021 at 11:51:04AM +0100, Luca Fancellu wrote:

Unmask operation must be called with interrupt disabled, on preempt_rt spin_lock_irqsave/spin_unlock_irqrestore don't disable/enable interrupts, so use raw_* implementation and change lock variable in struct irq_info from spinlock_t to raw_spinlock_t

Cc: stable@vger.kernel.org Fixes: 25da4618af24 ("xen/events: don't unmask an event channel when an eoi is pending")

Signed-off-by: Luca Fancellu luca.fancellu@arm.com

Reviewed-by: Wei Liu wei.liu@kernel.org