Current kernel reports disabling BAR if device with a 4TB BAR as it only supports BAR size to 128GB. pci 0000:01:00.0: disabling BAR 4: [mem 0x00000000-0x3ffffffffff 64bit pref] (bad alignment 0x40000000000) Increase the maximum BAR size from 128GB to 8TB for future expansion. Signed-off-by: Dongdong Liu <liudongdong3@xxxxxxxxxx> --- drivers/pci/setup-bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 547396ec50b5..a7893bf2f580 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -994,7 +994,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, { struct pci_dev *dev; resource_size_t min_align, align, size, size0, size1; - resource_size_t aligns[18]; /* Alignments from 1MB to 128GB */ + resource_size_t aligns[24]; /* Alignments from 1MB to 8TB */ int order, max_order; struct resource *b_res = find_bus_resource_of_type(bus, mask | IORESOURCE_PREFETCH, type); -- 2.33.0