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

[Wei Liu]

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@xxxxxxxxxxxxxxx
> Fixes: 25da4618af24 ("xen/events: don't unmask an event channel
> when an eoi is pending")
> 
> Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>

Reviewed-by: Wei Liu <wei.liu@xxxxxxxxxx>