Re: ext4 on s390?

[Eric Sandeen <sandeen@redhat.com>]

Eric Sandeen wrote:
> Just wondering if anyone has tested ext4 on s390.  I see that some
> assembly bitops got fixed upstream, but even with those in place I'm
> hanging when ext4 tries to init bg's:
> 
> Call Trace:
> ([<0000000000016472>] show_trace+0xb2/0x130)
>  [<00000000001793f4>] showacpu+0x48/0x68
>  [<0000000000024816>] do_ext_call_interrupt+0x8a/0xc4
>  [<000000000001c2b6>] do_extint+0xe2/0xfc
>  [<0000000000020ea8>] ext_no_vtime+0x16/0x1a
>  [<0000000020cd99f2>] ext4_mb_init_cache+0x9fe/0x1020 [ext4dev]
> ([<0000000020cd91a4>] ext4_mb_init_cache+0x1b0/0x1020 [ext4dev])
>  [<0000000020cdba9c>] ext4_mb_load_buddy+0x264/0x36c [ext4dev]
>  [<0000000020cdc446>] ext4_mb_regular_allocator+0x53e/0x1218 [ext4dev]
>  [<0000000020ce0d06>] ext4_mb_new_blocks+0x1a2/0x7e8 [ext4dev]
>  [<0000000020cd6538>] ext4_ext_get_blocks+0xe3c/0x1074 [ext4dev]
>  [<0000000020cc32be>] ext4_get_blocks_wrap+0x132/0x190 [ext4dev]
>  [<0000000020cc40aa>] ext4_getblk+0x8a/0x26c [ext4dev]
>  [<0000000020cc4b12>] ext4_bread+0x26/0xd8 [ext4dev]
>  [<0000000020cc89fa>] ext4_mkdir+0x18e/0x3c8 [ext4dev]
>  [<00000000000be54c>] vfs_mkdir+0x10c/0x1a8
>  [<00000000000c204e>] sys_mkdirat+0xca/0x114
>  [<00000000000208c0>] sysc_tracego+0xe/0x14
>  [<00000200001345e6>] 0x200001345e6
> 
> I'm now struggling to get an s390 booted on an upstream kernel to test
> that, but I know about -><- about s390s.

I managed to boot 2.6.26.2 (stock) on an s390; same problem.  :(

IBM, help? :)

-Eric