linux-kernel - Re: [PATCH 1/2] tpm, tpm_tis: Handle interrupt storm

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Message-ID: <20230523194654.GB5820@wunner.de>
Date:   Tue, 23 May 2023 21:46:54 +0200
From:   Lukas Wunner <lukas@...ner.de>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     Lino Sanfilippo <LinoSanfilippo@....de>, peterhuewe@....de,
        jgg@...pe.ca, jsnitsel@...hat.com, hdegoede@...hat.com,
        oe-lkp@...ts.linux.dev, lkp@...el.com,
        peter.ujfalusi@...ux.intel.com, peterz@...radead.org,
        linux@...ewoehner.de, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org, l.sanfilippo@...bus.com,
        p.rosenberger@...bus.com
Subject: Re: [PATCH 1/2] tpm, tpm_tis: Handle interrupt storm

On Tue, May 23, 2023 at 10:00:10PM +0300, Jarkko Sakkinen wrote:
> I feel also a bit resistant because leaf driver framework is really
> a wrong location in the kernel tree for IRQ storm detection.
> 
> It would be better to have it signaled above the TPM driver, and the
> driver would then just act on it.

That would require changing the logic in kernel/irq/spurious.c.

At this point in the cycle, such a change would definitely not be
eligible as a fix for v6.4.

Thanks,

Lukas