From: Marc Zyngier <maz@kernel.org>
To: Yogesh Lal <quic_ylal@quicinc.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>
Subject: Re: [PATCH v2] irqchip: gic-v3: Handle failure case of CPU enters low power state
Date: Wed, 08 Jan 2025 11:22:53 +0000 [thread overview]
Message-ID: <86v7upwnw2.wl-maz@kernel.org> (raw)
In-Reply-To: <20241220093907.2747601-1-quic_ylal@quicinc.com>
On Fri, 20 Dec 2024 09:39:07 +0000,
Yogesh Lal <quic_ylal@quicinc.com> wrote:
>
> Adding a new condition in gic_cpu_pm_notifier to address instances
> where the CPU fails to enter low power mode (CPU_PM_ENTER_FAILED).
> The CPU_PM framework signals CPU_PM_ENTER_FAILED upon such failures.
>
> When the CPU attempts to enter low power mode, it disables the
> redistributor and Group 1 interrupts and reinitializes the system
> registers upon wakeup.
>
> In case of failure while entering low power mode, it is necessary
> to re-enable the redistributor and Group 1 interrupts to restore
> normal operation.
>
> Signed-off-by: Yogesh Lal <quic_ylal@quicinc.com>
Acked-by: Marc Zyngier <maz@kernel.org>
M.
--
Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2025-01-08 11:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-20 9:39 [PATCH v2] irqchip: gic-v3: Handle failure case of CPU enters low power state Yogesh Lal
2025-01-08 11:22 ` Marc Zyngier [this message]
2025-01-15 9:16 ` [tip: irq/urgent] irqchip/gic-v3: Handle CPU_PM_ENTER_FAILED correctly tip-bot2 for Yogesh Lal
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