On Mon, Jul 26, 2010 at 02:02:46PM +0900, Isaku
When allocating bar, overflow can occur.
So add overflow check and don't allocate bar if overflowed.
Overflow check is ugly, but necessary.
Another suggested way is to change related variables u64 from u32
thus overflow can't occur because the related value are all u32 addressable.
Anyway even with u64, it is necessary to the resulted value > max_u32.
I wonder if we could create malloc zones for this and then use
pmm_alloc. The pmm_alloc function already handles overflow and
One difficulty, though, is that pmm_alloc doesn't guarentee linear
allocations, and it looks like pci_bios_init_device_bridge assumes
Yes, contiguous allocation is necessary for bridge filtering.
Anyway I'll give pmm_malloc() a try and see what can be done.