On 05-Nov-18 10:13 AM, Alejandro Lucero wrote:
On Mon, Nov 5, 2018 at 10:01 AM Li, WenjieX A <wenjiex.a...@intel.com>
wrote:
1. With GCC32, testpmd could not startup without '--iova-mode pa'.
./i686-native-linuxapp-gcc/app/testpmd -c f -n 4 -- -i
The output is:
EAL: Detected 16 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Some devices want iova as va but pa will be used because.. EAL: few
device bound to UIO
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: wrong dma mask size 48 (Max: 31)
EAL: alloc_pages_on_heap(): couldn't allocate memory due to IOVA exceeding
limits of current DMA mask
error allocating rte services array
EAL: FATAL: rte_service_init() failed
EAL: rte_service_init() failed
PANIC in main():
Cannot init EAL
5: [./i686-native-linuxapp-gcc/app/testpmd(+0x95fda) [0x56606fda]]
4: [/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf6) [0xf74d1276]]
3: [./i686-native-linuxapp-gcc/app/testpmd(main+0xf21) [0x565fcee1]]
2: [./i686-native-linuxapp-gcc/app/testpmd(__rte_panic+0x3d) [0x565edc68]]
1: [./i686-native-linuxapp-gcc/app/testpmd(rte_dump_stack+0x33)
[0x5675f333]]
Aborted
2. With '--iova-mode pa', testpmd could startup.
3. With GCC64, there is no such issue.
Thanks!
Does 32 bits support require IOMMU? It would be a surprise. If there is no
IOMMU hardware, no dma mask should be there at all.
IOMMU is supported on 32-bits, however limited the address space might
be. Maybe limit IOMMU width to RTE_MIN(31, value) bits for everything on
32-bit?
--
Thanks,
Anatoly
