vfio: fix truncated BAR offset for 32-bit

[dpdk.git] / drivers / bus / pci / linux / pci_vfio.c

diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c
index faf2990..b8faa23 100644 (file)
--- a/drivers/bus/pci/linux/pci_vfio.c
+++ b/drivers/bus/pci/linux/pci_vfio.c
@@ -451,7 +451,8 @@ pci_vfio_mmap_bar(int vfio_dev_fd, struct mapped_pci_resource *vfio_res,
                int bar_index, int additional_flags)
 {
        struct memreg {
-               unsigned long offset, size;
+               uint64_t offset;
+               size_t   size;
        } memreg[2] = {};
        void *bar_addr;
        struct pci_msix_table *msix_table = &vfio_res->msix_table;
@@ -504,7 +505,8 @@ pci_vfio_mmap_bar(int vfio_dev_fd, struct mapped_pci_resource *vfio_res,
                RTE_LOG(DEBUG, EAL,
                        "Trying to map BAR%d that contains the MSI-X "
                        "table. Trying offsets: "
-                       "0x%04lx:0x%04lx, 0x%04lx:0x%04lx\n", bar_index,
+                       "0x%04" PRIx64 ":0x%04zx, 0x%04" PRIx64 ":0x%04zx\n",
+                       bar_index,
                        memreg[0].offset, memreg[0].size,
                        memreg[1].offset, memreg[1].size);
        } else {
@@ -529,8 +531,8 @@ pci_vfio_mmap_bar(int vfio_dev_fd, struct mapped_pci_resource *vfio_res,
                if (map_addr != MAP_FAILED
                        && memreg[1].offset && memreg[1].size) {
                        void *second_addr = RTE_PTR_ADD(bar_addr,
-                                                       memreg[1].offset -
-                                                       (uintptr_t)bar->offset);
+                                               (uintptr_t)(memreg[1].offset -
+                                               bar->offset));
                        map_addr = pci_map_resource(second_addr,
                                                        vfio_dev_fd,
                                                        memreg[1].offset,