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Message-ID: <871r2m24tp.ffs@tglx>
Date: Wed, 08 Dec 2021 21:56:50 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
Bjorn Helgaas <helgaas@...nel.org>,
Marc Zygnier <maz@...nel.org>,
Alex Williamson <alex.williamson@...hat.com>,
Kevin Tian <kevin.tian@...el.com>,
Megha Dey <megha.dey@...el.com>,
Ashok Raj <ashok.raj@...el.com>, linux-pci@...r.kernel.org,
Cedric Le Goater <clg@...d.org>,
Michael Ellerman <mpe@...erman.id.au>,
Paul Mackerras <paulus@...ba.org>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
linuxppc-dev@...ts.ozlabs.org, Juergen Gross <jgross@...e.com>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
linux-mips@...r.kernel.org, Kalle Valo <kvalo@...eaurora.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
sparclinux@...r.kernel.org, x86@...nel.org,
xen-devel@...ts.xenproject.org, ath11k@...ts.infradead.org,
Wei Liu <wei.liu@...nel.org>, linux-hyperv@...r.kernel.org,
Christian Borntraeger <borntraeger@...ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>
Subject: Re: [patch V2 20/23] PCI/MSI: Move msi_lock to struct pci_dev
On Wed, Dec 08 2021 at 11:29, Jason Gunthorpe wrote:
> On Mon, Dec 06, 2021 at 11:27:56PM +0100, Thomas Gleixner wrote:
>> if (!desc->pci.msi_attrib.can_mask)
>
> It looks like most of the time this is called by an irq_chip, except
> for a few special cases list pci_msi_shutdown()
>
> Is this something that should ideally go away someday and use some
> lock in the irq_chip - not unlike what we've thought is needed for
> IMS?
Some day we'll have that yes.
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