On 02-Oct-19 3:42 PM, Stephen Hemminger wrote:
On Wed, 2 Oct 2019 13:41:30 +0200 David Marchand <david.march...@redhat.com> wrote:+uint64_t eal_get_baseaddr(void) +{ + /* + * Linux kernel uses a really high address as starting address for + * serving mmaps calls. If there exists addressing limitations and IOVA + * mode is VA, this starting address is likely too high for those + * devices. However, it is possible to use a lower address in the + * process virtual address space as with 64 bits there is a lot of + * available space. + * + * Current known limitations are 39 or 40 bits. Setting the starting + * address at 4GB implies there are 508GB or 1020GB for mapping the + * available hugepages. This is likely enough for most systems, although + * a device with addressing limitations should call + * rte_mem_check_dma_mask for ensuring all memory is within supported + * range. + */ + return 0x100000000;Is this going to work right on 32 bit builds where sizeof(uint) == 4 then constants default to 32. Does it need ul or ull suffix (or a cast)?
Adding ULL in v2, thanks. -- Thanks, Anatoly
