From: Wen Xiong <wenxiong@linux.ibm.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org, gjoyce@linux.ibm.com,
linux-pci@vger.kernel.org, Bjorn Helgaas <helgaas@kernel.org>,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH 1/1] genirq/msi: Dynamic remove/add stroage adapter hits EEH
Date: Tue, 01 Apr 2025 15:14:49 -0500 [thread overview]
Message-ID: <e83622773199665d39db5f724537d9dd@linux.ibm.com> (raw)
In-Reply-To: <87wmc9wg2z.ffs@tglx>
On 2025-03-28 06:27, Thomas Gleixner wrote:
> You are completely missing the point. This is not a problem restricted
> to PCI/MSI interrupts.
>
Thanks for all suggestions! I will investigate more and check if we can
fix it in device driver.
Looks several device drivers in kernel use two kernel APIs to set/clean
IRQ_NO_BALACING status for a given irq.
irq_set_status_flags(irq, IRQ_NO_BALANCING);
irq_clear_status_flags(irq, IRQ_NO_BALANCING);
With these two APIs, device driver can decide if using kernel irq
balance or setting irq affinity by driver itself?
So we can set/clear IRQ_NO_BALANCING during reset.
Thanks,
Wendy
next prev parent reply other threads:[~2025-04-01 20:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-19 12:14 [PATCH 1/1] genirq/msi: Dynamic remove/add stroage adapter hits EEH wenxiong
2025-03-19 16:15 ` Thomas Gleixner
2025-03-20 2:58 ` Wen Xiong
2025-03-20 8:23 ` Thomas Gleixner
2025-03-20 8:48 ` Thomas Gleixner
2025-03-27 21:36 ` Wen Xiong
2025-03-28 11:27 ` Thomas Gleixner
2025-04-01 20:14 ` Wen Xiong [this message]
2025-04-02 8:33 ` Thomas Gleixner
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