> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Sent: Monday, November 21, 2022 10:38 PM > > The upcoming support for PCI/IMS requires to store some information > related > to the message handling in the MSI descriptor, e.g. PASID or a pointer to a > queue. > > Provide a generic storage struct which maps over the existing PCI specific > storage which means the size of struct msi_desc is not getting bigger. > > It contains a iomem pointer for device memory based IMS and a union of a > u64 and a void pointer which allows the device specific IMS implementations > to store the necessary information. stale comment. > > The iomem pointer is set up by the domain allocation functions. > > The data union msi_dev_cookie is going to be handed in when allocating an no msi_dev_cookie now.
