dpdk: fail in early init if we cannot alloc hugepages
@@ -102,22 +102,37 @@ dpdk_early_init (vlib_main_t *vm)
int fd = -1;
u64 *pt = 0;
clib_error_t *err = 0;
+ clib_mem_vm_alloc_t alloc = { 0 };
/* check if pagemap is accessible - if we get zero result
dpdk will not be able to get physical memory address and game is over
unless we have IOMMU */
pt = clib_mem_vm_get_paddr (&pt, min_log2 (sysconf (_SC_PAGESIZE)), 1);
if (pt && pt[0])
- goto done;
+ goto check_hugetlb;
- if ((fd = open ("/dev/vfio/vfio", O_RDWR) == -1))
+ if ((fd = open ("/dev/vfio/vfio", O_RDWR)) == -1)
goto error;
if (ioctl (fd, VFIO_GET_API_VERSION) != VFIO_API_VERSION)
goto error;
/* if we have type 1 IOMMU page map is not needed */
- if (ioctl (fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU) == 1)
+ if (ioctl (fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU) != 1)
+ goto error;
+
+check_hugetlb:
+ alloc.flags = CLIB_MEM_VM_F_SHARED | CLIB_MEM_VM_F_HUGETLB | CLIB_MEM_VM_F_HUGETLB_PREALLOC;
+ alloc.size = 1;
+
+ if ((err = clib_mem_vm_ext_alloc (&alloc)))
+ {
+ clib_error_free (err);
+ goto error;
+ }
+ else
+ clib_mem_vm_free (alloc.addr, 1 << alloc.log2_page_size);
+
goto done;
error:
