On 05/10/2010 06:41 PM, Cam Macdonell wrote:
What would happen to any data written to the BAR before the the handshake
completed? I think it would disappear.
But, the BAR isn't there until the handshake is completed. Only after
receiving the shared memory fd does my device call pci_register_bar()
in the callback function. So there may be a case with BAR2 (the
shared memory BAR) missing during initialization. FWIW, I haven't
encountered this.
Well, that violates PCI. You can't have a PCI device with no BAR, then
have a BAR appear. It may work since the BAR is registered a lot faster
than the BIOS is able to peek at it, but it's a race nevertheless.
--
error compiling committee.c: too many arguments to function
