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From: Christoffer Dall <christoffer.dall@arm.com>
To: Julien Thierry <julien.thierry@arm.com>
Cc: linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
	marc.zyngier@arm.com, linux-arm-kernel@lists.infradead.org,
	linux-rt-users@vger.kernel.org, tglx@linutronix.de,
	rostedt@goodmis.org, bigeasy@linutronix.de
Subject: Re: [PATCH v2 4/4] KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock a raw_spinlock
Date: Tue, 11 Dec 2018 11:32:32 +0100	[thread overview]
Message-ID: <20181211103232.GW30263@e113682-lin.lund.arm.com> (raw)
In-Reply-To: <1543256807-9768-5-git-send-email-julien.thierry@arm.com>

On Mon, Nov 26, 2018 at 06:26:47PM +0000, Julien Thierry wrote:
> vgic_cpu->ap_list_lock must always be taken with interrupts disabled as
> it is used in interrupt context.
> 
> For configurations such as PREEMPT_RT_FULL, this means that it should
> be a raw_spinlock since RT spinlocks are interruptible.
> 
> Signed-off-by: Julien Thierry <julien.thierry@arm.com>
> Cc: Christoffer Dall <christoffer.dall@arm.com>
> Cc: Marc Zyngier <marc.zyngier@arm.com>


Acked-by: Christoffer Dall <christoffer.dall@arm.com>

WARNING: multiple messages have this Message-ID (diff)
From: Christoffer Dall <christoffer.dall@arm.com>
To: Julien Thierry <julien.thierry@arm.com>
Cc: linux-rt-users@vger.kernel.org, marc.zyngier@arm.com,
	bigeasy@linutronix.de, linux-kernel@vger.kernel.org,
	rostedt@goodmis.org, tglx@linutronix.de,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 4/4] KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock a raw_spinlock
Date: Tue, 11 Dec 2018 11:32:32 +0100	[thread overview]
Message-ID: <20181211103232.GW30263@e113682-lin.lund.arm.com> (raw)
In-Reply-To: <1543256807-9768-5-git-send-email-julien.thierry@arm.com>

On Mon, Nov 26, 2018 at 06:26:47PM +0000, Julien Thierry wrote:
> vgic_cpu->ap_list_lock must always be taken with interrupts disabled as
> it is used in interrupt context.
> 
> For configurations such as PREEMPT_RT_FULL, this means that it should
> be a raw_spinlock since RT spinlocks are interruptible.
> 
> Signed-off-by: Julien Thierry <julien.thierry@arm.com>
> Cc: Christoffer Dall <christoffer.dall@arm.com>
> Cc: Marc Zyngier <marc.zyngier@arm.com>


Acked-by: Christoffer Dall <christoffer.dall@arm.com>

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2018-12-11 10:32 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-26 18:26 [PATCH v2 0/4] KVM: arm/arm64: vgic: Use raw_spinlock for locks taken in IRQ context Julien Thierry
2018-11-26 18:26 ` Julien Thierry
2018-11-26 18:26 ` [PATCH v2 1/4] KVM: arm/arm64: vgic: Do not cond_resched_lock() with IRQs disabled Julien Thierry
2018-11-26 18:26   ` Julien Thierry
2018-11-27  6:57   ` Sasha Levin
2018-11-27  6:57   ` Sasha Levin
2018-12-11 10:20   ` Christoffer Dall
2018-12-11 10:20     ` Christoffer Dall
2018-12-11 10:20     ` Christoffer Dall
2018-12-14  9:36     ` Julien Thierry
2018-12-14  9:36       ` Julien Thierry
2018-11-26 18:26 ` [PATCH v2 2/4] KVM: arm/arm64: vgic: Make vgic_irq->irq_lock a raw_spinlock Julien Thierry
2018-11-26 18:26   ` Julien Thierry
2018-11-26 18:26 ` [PATCH v2 3/4] KVM: arm/arm64: vgic: Make vgic_dist->lpi_list_lock " Julien Thierry
2018-11-26 18:26   ` Julien Thierry
2018-11-26 18:26   ` Julien Thierry
2018-11-26 18:26 ` [PATCH v2 4/4] KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock " Julien Thierry
2018-11-26 18:26   ` Julien Thierry
2018-12-11 10:32   ` Christoffer Dall [this message]
2018-12-11 10:32     ` Christoffer Dall

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