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251a448881
Some RISC-V systems include PCIe host controllers that support PCIe message-signaled interrupts. For this to work on Linux, we need to enable PCI_MSI_IRQ_DOMAIN and define struct msi_alloc_info. Support for the latter is enabled by including the architecture-generic msi.h include. Signed-off-by: Wesley Terpstra <wesley@sifive.com> [paul.walmsley@sifive.com: split initial patch into one arch/riscv patch and one drivers/pci patch] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>