linux-kernel - Re: IRQ affinity not working on Xen pci-platform device^W^W^W QEMU split-irqchip I/O APIC.

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Message-ID: <6422cc2395c2f2db126dd4172e82b8d32f254403.camel@infradead.org>
Date:   Sat, 04 Mar 2023 10:15:25 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        xen-devel <xen-devel@...ts.xenproject.org>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        qemu-devel <qemu-devel@...gnu.org>, Peter Xu <peterx@...hat.com>
Subject: Re: IRQ affinity not working on Xen pci-platform device^W^W^W QEMU
 split-irqchip I/O APIC.

On Sat, 2023-03-04 at 09:57 +0000, David Woodhouse wrote:
> I wonder if the EOI is going missing because it's coming
> from the wrong CPU? Note no 'EOI broadcast' after the last line in the
> log I showed above; it isn't just that I trimmed it there.

I'm running on a host kernel without commit fceb3a36c29a so that's
probably it.

https://git.kernel.org/torvalds/c/fceb3a36c29a

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