linux-kernel - Re: [PATCH] irqchip/gic-v4.1: Use readx_poll_timeout

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Message-Id: <159181454880.1512339.2705658130320062146.b4-ty@kernel.org>
Date:   Wed, 10 Jun 2020 19:43:07 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Zenghui Yu <yuzenghui@...wei.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvmarm@...ts.cs.columbia.edu
Cc:     tglx@...utronix.de, jason@...edaemon.net
Subject: Re: [PATCH] irqchip/gic-v4.1: Use readx_poll_timeout_atomic() to fix sleep in atomic

On Fri, 5 Jun 2020 13:23:45 +0800, Zenghui Yu wrote:
> readx_poll_timeout() can sleep if @sleep_us is specified by the caller,
> and is therefore unsafe to be used inside the atomic context, which is
> this case when we use it to poll the GICR_VPENDBASER.Dirty bit in
> irq_set_vcpu_affinity() callback.
> 
> Let's convert to its atomic version instead which helps to get the v4.1
> board back to life!
> 
> [...]

Applied to irq/irqchip-next, thanks!

[1/1] irqchip/gic-v4.1: Use readx_poll_timeout_atomic() to fix sleep in atomic
      commit: a87d4e00eacbc95b44466e3470529f4de49b450a

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.