In the following code, msi lower address, higher address and data is written to msi_desc corresponding to a msi vector.
http://lxr.free-electrons.com/source/drivers/pci/msi.c#L311 We can get the msi message from irq using irq_get_msi_desc(). http://lxr.free-electrons.com/source/drivers/pci/msi.c#L349 struct msi_desc *entry = irq_get_msi_desc(irq); Regards Manoj Nayak
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