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Date:   Wed, 7 Apr 2021 13:00:25 +0000
From:   Wei Liu <wei.liu@kernel.org>
To:     Luca Fancellu <luca.fancellu@arm.com>
Cc:     sstabellini@kernel.org, jgross@suse.com, jgrall@amazon.com,
        boris.ostrovsky@oracle.com, tglx@linutronix.de, wei.liu@kernel.org,
        jbeulich@suse.com, yyankovskyi@gmail.com,
        xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
        stable@vger.kernel.org, bertrand.marquis@arm.com
Subject: Re: [PATCH] xen/evtchn: Change irq_info lock to raw_spinlock_t
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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>