Hi Anatoly,
On Tue, Jul 07, 2015 at 09:08:08 +0000, Burakov, Anatoly wrote:
> Hi all,
>
> > So, as VFIO support for 32bit systems is broken, DPDK should not configure
> > VFIO in that case.
>
> ...Or no one should try and run VFIO on a 32-bit system, which should be
> noted in documentation. I'm a bit wary of adding special handling in this
> case.
>
> Does making the offset off_t fix the compile issues for 32 bit kernel?
>
Making offset off_t seems to fail for x86_x32-native-linuxapp-gcc target with
the following error in 64-bit gcc, but is working fine with i686 and
x86_64 targets:
/home/ubuntu/dpdk/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c: In function
?pci_vfio_map_resource?:
/home/ubuntu/dpdk/x86_x32-native-linuxapp-gcc/include/rte_common.h:90:30:
error: cast to pointer from integer of different size
[-Werror=int-to-pointer-cast]
#define RTE_PTR_ADD(ptr, x) ((void*)((uintptr_t)(ptr) + (x)))
^
/home/ubuntu/dpdk/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c:816:25: note: in
expansion of macro ?RTE_PTR_ADD?
void *second_addr = RTE_PTR_ADD(bar_addr, memreg[1].offset);
^
cc1: all warnings being treated as errors
make[7]: *** [eal_pci_vfio.o] Error 1
make[6]: *** [eal] Error 2
make[5]: *** [linuxapp] Error 2
make[4]: *** [librte_eal] Error 2
make[3]: *** [lib] Error 2
make[2]: *** [all] Error 2
make[1]: *** [x86_x32-native-linuxapp-gcc_install] Error 2
make: *** [install] Error 2
However, unsigned long seems to be working fine for all builds.
Thanks,
Rahul
