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| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-12-06 23:51:49 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-12-16 22:22:20 +0100 |
| commit | ef3350c53d2aac65cf1c4ecc968bbb1de5f421ea (patch) | |
| tree | 8e6d71f065f0adb3819bacf50287b15a15773660 | |
| parent | genirq/msi: Mop up old interfaces (diff) | |
| download | linux-dev-ef3350c53d2aac65cf1c4ecc968bbb1de5f421ea.tar.xz linux-dev-ef3350c53d2aac65cf1c4ecc968bbb1de5f421ea.zip | |
genirq/msi: Add abuse prevention comment to msi header
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
| -rw-r--r-- | include/linux/msi.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index b54010ba7b0d..70cc6a555a8e 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -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> |