Userspace mmap to PCI is failing
Date: Fri Feb 17 2017 - 17:21:49 EST
I am trying to mmap a PCI device, but it fails with EINVAL.
fd = open("/dev/mem", O_RDWR | O_SYNC);
rv = mmap64(0, size, PROT_READ, MAP_SHARED, fd, pci_addr);
The pci_addr is the address obtained from lspci output which is a 64 bit
The pci_addr has a value of 0x121ffb000000, is that weird?
Kernel is 3.4.10 64 bit and User space is 32 bit.