Hello, I am trying to mmap a PCI device, but it fails with EINVAL.
<snip> ... fd = open("/dev/mem", O_RDWR | O_SYNC); ... rv = mmap64(0, size, PROT_READ, MAP_SHARED, fd, pci_addr); ... <snip> The pci_addr is the address obtained from lspci output which is a 64 bit address. The pci_addr has a value of 0x121ffb000000, is that weird? Kernel is 3.4.10 64 bit and User space is 32 bit. regards, Lex