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genirq/msi: Add abuse prevention comment to msi header

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Hope dies last.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.170847844@linutronix.de
This commit is contained in:
Thomas Gleixner 2021-12-06 23:51:49 +01:00
parent cc9a246dbf
commit ef3350c53d
1 changed files with 14 additions and 0 deletions
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14
include/linux/msi.h
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@ -2,6 +2,20 @@
#ifndef LINUX_MSI_H
#define LINUX_MSI_H
/*
* This header file contains MSI data structures and functions which are
* only relevant for:
* - Interrupt core code
* - PCI/MSI core code
* - MSI interrupt domain implementations
* - IOMMU, low level VFIO, NTB and other justified exceptions
* dealing with low level MSI details.
*
* Regular device drivers have no business with any of these functions and
* especially storing MSI descriptor pointers in random code is considered
* abuse. The only function which is relevant for drivers is msi_get_virq().
*/
#include <linux/cpumask.h>
#include <linux/mutex.h>
#include <linux/list.h>