Support for arm64?

[shockx2]

I tried to port f-stack with reference board include SoC that support DPDK.
(SoC vender: NXP or Marvell...)
I modifed lib/Makefile and complete cross compile.
But, Segmentation fault occured in ff_freebsd_init()
Do you have any plan to support arm64 architecture?
And Do you have nice idea to resolve the Segmentation fault?

#0 get_curthread () at ./machine_include/machine/pcpu.h:62
#1 0x000000000042d988 in sysctl_load_tunable_by_oid_locked (
oidp=0x7d5390 <sysctl___kern_smp_disabled>)
at /home/sehoon/workspace/macchiatobin/f-stack/lib/../freebsd/kern/kern_sysctl.c:221
#2 0x000000000042e03c in sysctl_register_oid (
oidp=0x7d5390 <sysctl___kern_smp_disabled>)
at /home/sehoon/workspace/macchiatobin/f-stack/lib/../freebsd/kern/kern_sysctl.c:423
#3 0x000000000042ebfc in sysctl_register_all (arg=0x0)
at /home/sehoon/workspace/macchiatobin/f-stack/lib/../freebsd/kern/kern_sysctl.c:797
#4 0x00000000004075c0 in mi_startup () at ff_init_main.c:260
#5 0x00000000004070c0 in ff_freebsd_init () at ff_freebsd_init.c:111
#6 0x0000000000510234 in ff_init (argc=5, argv=0x7ffffffc28) at ff_init.c:47

Thread 1 "udp_receiver" hit Breakpoint 4, get_curthread ()
at ./machine_include/machine/pcpu.h:62
62 __asm __volatile("ldr %0, [x18]" : "=&r"(td));
(gdb) list
57 static inline struct thread *
58 get_curthread(void)
59 {
60 struct thread *td;
61
62 __asm __volatile("ldr %0, [x18]" : "=&r"(td));
63 return (td);
64 }
65
66 #define curthread get_curthread()

[whl739]

Do you have any plan to support arm64 architecture?

No, becuase we don't have any arm64 machine for now.

About the segment fault, it seemed that you havn't include the lib/include/machine/pcpu.h first.
See the file:

#include_next <machine/pcpu.h>

#undef __curthread

static __inline struct thread *
__curthread_ff(void)
{
    return (pcurthread);
}
#define __curthread __curthread_ff

Or, maybe you need add:

#undef curthread

[jeff-lv-github]

I tried to port f-stack with reference board include SoC that support DPDK. (SoC vender: NXP or Marvell...) I modifed lib/Makefile and complete cross compile. But, Segmentation fault occured in ff_freebsd_init() Do you have any plan to support arm64 architecture? And Do you have nice idea to resolve the Segmentation fault?

#0 get_curthread () at ./machine_include/machine/pcpu.h:62 #1 0x000000000042d988 in sysctl_load_tunable_by_oid_locked ( oidp=0x7d5390 <sysctl___kern_smp_disabled>) at /home/sehoon/workspace/macchiatobin/f-stack/lib/../freebsd/kern/kern_sysctl.c:221 #2 0x000000000042e03c in sysctl_register_oid ( oidp=0x7d5390 <sysctl___kern_smp_disabled>) at /home/sehoon/workspace/macchiatobin/f-stack/lib/../freebsd/kern/kern_sysctl.c:423 #3 0x000000000042ebfc in sysctl_register_all (arg=0x0) at /home/sehoon/workspace/macchiatobin/f-stack/lib/../freebsd/kern/kern_sysctl.c:797 #4 0x00000000004075c0 in mi_startup () at ff_init_main.c:260 #5 0x00000000004070c0 in ff_freebsd_init () at ff_freebsd_init.c:111 #6 0x0000000000510234 in ff_init (argc=5, argv=0x7ffffffc28) at ff_init.c:47

Thread 1 "udp_receiver" hit Breakpoint 4, get_curthread () at ./machine_include/machine/pcpu.h:62 62 __asm __volatile("ldr %0, [x18]" : "=&r"(td)); (gdb) list 57 static inline struct thread * 58 get_curthread(void) 59 { 60 struct thread *td; 61 62 __asm __volatile("ldr %0, [x18]" : "=&r"(td)); 63 return (td); 64 } 65 66 #define curthread get_curthread()

I am porting the project to arm64 and meet some crash problems;
Could you share your setps in porting f-stack?

[jeff-lv-github]

Do you have any plan to support arm64 architecture?

No, becuase we don't have any arm64 machine for now.

About the segment fault, it seemed that you havn't include the lib/include/machine/pcpu.h first. See the file:

#include_next <machine/pcpu.h>

#undef __curthread

static __inline struct thread *
__curthread_ff(void)
{
    return (pcurthread);
}
#define __curthread __curthread_ff

Or, maybe you need add:

#undef curthread

Could you share the experience about porting freebsd in x86?