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Re: [patch V4 09-02/35] PCI/MSI: Allocate MSI device data on first use
- To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
- Date: Wed, 15 Dec 2021 18:46:45 +0100
- Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, Bjorn Helgaas <helgaas@xxxxxxxxxx>, Marc Zygnier <maz@xxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Megha Dey <megha.dey@xxxxxxxxx>, Ashok Raj <ashok.raj@xxxxxxxxx>, linux-pci@xxxxxxxxxxxxxxx, Cedric Le Goater <clg@xxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Arnd Bergmann <arnd@xxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx, Stuart Yoder <stuyoder@xxxxxxxxx>, Laurentiu Tudor <laurentiu.tudor@xxxxxxx>, Nishanth Menon <nm@xxxxxx>, Tero Kristo <kristo@xxxxxxxxxx>, Santosh Shilimkar <ssantosh@xxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, Vinod Koul <vkoul@xxxxxxxxxx>, dmaengine@xxxxxxxxxxxxxxx, Mark Rutland <mark.rutland@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, Jassi Brar <jassisinghbrar@xxxxxxxxx>, Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx>, Sinan Kaya <okaya@xxxxxxxxxx>
- Delivery-date: Wed, 15 Dec 2021 17:46:51 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Wed, Dec 15, 2021 at 06:19:49PM +0100, Thomas Gleixner wrote:
> Allocate MSI device data on first use, i.e. when a PCI driver invokes one
> of the PCI/MSI enablement functions.
>
> Add a wrapper function to ensure that the ordering vs. pcim_msi_release()
> is correct.
>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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