linux-kernel - [PATCH 0/3] Save/restore for GICv3

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Message-Id: <20230214233426.2994501-1-f.fainelli@gmail.com>
Date:   Tue, 14 Feb 2023 15:34:23 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        linux-kernel@...r.kernel.org (open list:IRQCHIP DRIVERS),
        Sudeep Holla <sudeep.holla@....com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>
Subject: [PATCH 0/3] Save/restore for GICv3

Hi all,

This patch series adds support for saving and restoring the GIC
distributor and re-distributor which was missing for platforms that
implement suspend states where the GIC loses power and therefore its
state.

The system that I have been testing this with has:

[    0.000000] GICv3: GIC: Using split EOI/Deactivate mode
[    0.000000] GICv3: 288 SPIs implemented
[    0.000000] GICv3: 0 Extended SPIs implemented
[    0.000000] Root IRQ handler: gic_handle_irq
[    0.000000] GICv3: GICv3 features: 16 PPIs

So no support for extended PPIs or SPIs, hopefully the code is correct,
or close to.

Thanks!

Florian Fainelli (3):
  irqchip/gic-v3: Use switch/case statements in gic_cpu_pm_notifier
  irqchip/gic-v3: Propagate gic_cpu_pm_init() return code
  irqchip/gic-v3: Save and restore distributor and re-distributor

 drivers/irqchip/irq-gic-v3.c       | 282 ++++++++++++++++++++++++++++-
 include/linux/irqchip/arm-gic-v3.h |   4 +
 2 files changed, 280 insertions(+), 6 deletions(-)

-- 
2.34.1