linux-kernel - Re: [PATCH 00/11] arm/arm64: Turning IPIs into normal interrupts

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Date:   Tue, 19 May 2020 23:25:14 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Russell King <linux@....linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Sumit Garg <sumit.garg@...aro.org>, kernel-team@...roid.com
Subject: Re: [PATCH 00/11] arm/arm64: Turning IPIs into normal interrupts


Hi Marc,

On 19/05/20 17:17, Marc Zyngier wrote:
>
> This has been tested on a bunch of 32 and 64bit guests.
>

I gave this a brief spin on Juno and on HiKey960, nothing to report there.

FWIW I'd like to stare a bit at the rest; I already have a rookie question
on the accounting, but the rest will be for after I get some sleep, and
maybe even a mug of coffee :-)

> Marc Zyngier (11):
>   genirq: Add fasteoi IPI flow
>   genirq: Allow interrupts to be excluded from /proc/interrupts
>   arm64: Allow IPIs to be handled as normal interrupts
>   ARM: Allow IPIs to be handled as normal interrupts
>   irqchip/gic-v3: Describe the SGI range
>   irqchip/gic-v3: Configure SGIs as standard interrupts
>   irqchip/gic: Refactor SMP configuration
>   irqchip/gic: Configure SGIs as standard interrupts
>   irqchip/gic-common: Don't enable SGIs by default
>   irqchip/bcm2836: Configure mailbox interrupts as standard interrupts
>   arm64: Kill __smp_cross_call and co
>
>  arch/arm/Kconfig                  |   1 +
>  arch/arm/include/asm/smp.h        |   5 +
>  arch/arm/kernel/smp.c             |  97 +++++++++++---
>  arch/arm64/Kconfig                |   1 +
>  arch/arm64/include/asm/irq_work.h |   4 +-
>  arch/arm64/include/asm/smp.h      |   6 +-
>  arch/arm64/kernel/smp.c           |  98 +++++++++++----
>  drivers/irqchip/irq-bcm2836.c     | 151 ++++++++++++++++++----
>  drivers/irqchip/irq-gic-common.c  |   3 -
>  drivers/irqchip/irq-gic-v3.c      | 109 ++++++++++------
>  drivers/irqchip/irq-gic.c         | 203 ++++++++++++++++++------------
>  include/linux/irq.h               |   4 +-
>  kernel/irq/chip.c                 |  26 ++++
>  kernel/irq/debugfs.c              |   1 +
>  kernel/irq/proc.c                 |   2 +-
>  kernel/irq/settings.h             |   7 ++
>  16 files changed, 515 insertions(+), 203 deletions(-)