linux-kernel - Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

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Message-ID: <6934efce0808220951i5a2cd6f9t70f9c522eae6f1d6@mail.gmail.com>
Date:	Fri, 22 Aug 2008 09:51:01 -0700
From:	"Jared Hulbert" <jaredeh@...il.com>
To:	"Geert Uytterhoeven" <Geert.Uytterhoeven@...ycom.com>
Cc:	Linux-kernel@...r.kernel.org, linux-embedded@...r.kernel.org,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	"Jörn Engel" <joern@...fs.org>,
	tim.bird@...sony.com, cotte@...ibm.com, nickpiggin@...oo.com.au
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

> The version in SVN seems to be slightly older than the one you submitted?

Oops.  Okay I must have neglected to sync at the very end.  Thanks.

I forgot, there is also a git repo at

git://git.infradead.org/users/jehulber/axfs.git

> Which platform(s) do you use for testing?

ARM, x86

> I gave AxFS a try on PS3 (ppc64, always use big-endian 64-bit for testing new
> code ;-).

Smart.  Hmmm, If only I had a PS3....

> When mounting the image, I got the crash below:
>
> | attempt to access beyond end of device
> | loop0: rw=0, want=4920, limit=4912
> | [c00000000c1e34c0] [d000000000037974] .axfs_copy_block+0x8c/0x144 [axfs] (unreliable)
> | [c00000000c1e3580] [d000000000035f20] .axfs_copy_metadata+0x154/0x1cc [axfs]
> | [c00000000c1e3630] [d000000000035fd8] .axfs_verify_eofs_magic+0x40/0xa0 [axfs]
> | [c00000000c1e36c0] [d000000000036678] .axfs_fill_super+0x3c0/0x7c8 [axfs]
> | [c00000000c1e3780] [c0000000000d1670] .get_sb_bdev+0x154/0x1ec
> | [c00000000c1e3860] [d000000000037a94] .axfs_get_sb_bdev+0x34/0x6c [axfs]
> | [c00000000c1e38f0] [d000000000035d0c] .axfs_get_sb+0x320/0x394 [axfs]
> | [c00000000c1e3a00] [c0000000000d1318] .vfs_kern_mount+0x88/0x108
> | [c00000000c1e3ab0] [c0000000000d143c] .do_kern_mount+0x68/0x148
> | [c00000000c1e3b60] [c0000000000f0a10] .do_new_mount+0x90/0xf4
> | [c00000000c1e3c10] [c0000000000f0c5c] .do_mount+0x1e8/0x23c
> | [c00000000c1e3d60] [c000000000114778] .compat_sys_mount+0x21c/0x2ac
> | [c00000000c1e3e30] [c0000000000074dc] syscall_exit+0x0/0x40

Yeah we've had this problem before.  I'm not so sure this is an endian
bug, though it is likely.

> When mounting (also on PS3) an image created on ia32, I get a different crash:
>
> | axfs: wrong magic
>
> So I guess some parts are not yet 64-bit or endian clean.

Can you run mkfs.axfs on the same trivial directory on both ia32 and
PPC64 and then get me the resulting images?
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