linux-kernel - Re: 5.10-rc0: build error in ipi.c

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Date:   Thu, 15 Oct 2020 20:41:32 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        kernel list <linux-kernel@...r.kernel.org>
Subject: Re: 5.10-rc0: build error in ipi.c

On 2020-10-15 18:18, Pavel Machek wrote:
> Hi!
> 
>> > > I'm getting build problems in 5.10-rc0 in config for n900. ARM board.
>> > >
>> > > CONFIG_SMP=y
>> > > CONFIG_SMP_ON_UP=y
>> 
>> On its own, this doesn't break anything with multi_v7_defconfig.
> 
> I sent config off-list. Let me know if it does not arrive or if you
> need more info.

Try this for size:

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 10a5aff4eecc..db923e0da162 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -81,6 +81,7 @@ config IRQ_FASTEOI_HIERARCHY_HANDLERS

  # Generic IRQ IPI support
  config GENERIC_IRQ_IPI
+	select IRQ_DOMAIN_HIERARCHY
  	bool

  # Generic MSI interrupt support


         N,
-- 
Jazz is not dead. It just smells funny...