> Hi
>
> I've been testing non-x86 architecture builds for the upcoming 2.12 release
> of OVS and I'm hitting an issue with DPDK enabled builds on the arm64
> architecture.
>
> branch-2.12 includes improvements for native hashing under arm64; these
> appear to work fine when DPDK is not in the mix, but with DPDK enabled, I
> get a SIGILL in lib/hash.c:
Hi.
What is your target platform?
One explanation I could imagine is that DPDK blindly forces -march=armv8-a+crc
defining __ARM_FEATURE_CRC32 while your cpu doesn't support crc32 extension.
Do you have crc32 in the list of cpu features in /proc/cpuinfo ?
Best regards, Ilya Maximets.
>
> Program received signal SIGILL, Illegal instruction.
> hash_bytes (p_=p_ at entry=0xaaaaaac36e50, n=7, basis=basis at entry=0) at
> ../lib/hash.c:38
> 38 ../lib/hash.c: No such file or directory.
>
> (gdb) backtrace full
> #0 hash_bytes (p_=p_ at entry=0xaaaaaac36e50, n=7, basis=basis at entry=0) at
> ../lib/hash.c:38
> p = 0xaaaaaac36e50
> orig_n = 7
> hash = 0
> #1 0x0000aaaaaab4238c in hash_string (basis=0, s=0xaaaaaac36e50 "comment")
> at ../lib/hash.h:342
> No locals.
> #2 hash_name (name=name at entry=0xaaaaaac36e50 "comment") at
> ../lib/shash.c:28
> No locals.
> #3 0x0000aaaaaab42a1c in shash_find (sh=sh at entry=0xaaaaaaceb6f8
> <all_commands>, name=name at entry=0xaaaaaac36e50 "comment")
> at ../lib/shash.c:231
> No locals.
> #4 0x0000aaaaaab42a60 in shash_add_once (sh=0xaaaaaaceb6f8 <all_commands>,
> name=0xaaaaaac36e50 "comment",
> data=0xaaaaaacdb0d8 <db_ctl_commands>) at ../lib/shash.c:135
> No locals.
> #5 0x0000aaaaaab42ab4 in shash_add_assert (sh=sh at entry=0xaaaaaaceb6f8
> <all_commands>, name=<optimized out>,
> data=data at entry=0xaaaaaacdb0d8 <db_ctl_commands>) at ../lib/shash.c:146
> __func__ = "shash_add_assert"
> #6 0x0000aaaaaab05900 in ctl_register_command (command=0xaaaaaacdb0d8
> <db_ctl_commands>) at ../lib/db-ctl-base.c:2470
> No locals.
> #7 ctl_register_commands (commands=0xaaaaaacdb0d8 <db_ctl_commands>) at
> ../lib/db-ctl-base.c:2470
> p = 0xaaaaaacdb0d8 <db_ctl_commands>
> p = <optimized out>
> #8 ctl_init__ (idl_class_=<optimized out>, ctl_classes_=<optimized out>,
> cmd_show_tables_=0x0, ctl_exit_func_=<optimized out>)
> at ../lib/db-ctl-base.c:2486
> No locals.
> #9 0x0000aaaaaaad5768 in nbctl_cmd_init () at
> ../ovn/utilities/ovn-nbctl.c:5695
> No locals.
> #10 main (argc=1, argv=0xfffffffff4d8) at ../ovn/utilities/ovn-nbctl.c:137
> idl = <optimized out>
> local_options = {map = {buckets = 0x0, one = 0xfffffffff390, mask =
> 281473881441200, n = 187649986051872}}
> args = <optimized out>
> parsed_options = 0xfffffffff350
> n_parsed_options = 187649986051968
> error_s = <optimized out>
> socket_name = <optimized out>
> daemon_mode = <optimized out>
>
> This effects pretty much all of the binaries built with DPDK enabled.
>
> gcc version is 9.2.1 on Ubuntu eoan; I've not tested on earlier gcc
> versions (yet).
>
> Any help/pointers much appreciated.
>
> Cheers
>
> James
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