Re: [uml-devel] UML patches against vanilla 2.6.0

[BlaisorBlade <blaisorblade_spam@yahoo.it>]

> Thanks for the great pointer.
> I've downloaded all these patches and
> finally able to boot a clean 2.6.0-1um using initrd. There seems to some
> problem with network (tuntap), but I'm still looking it.

We'll accept happily reports.

> Here's what I did ...
>
> My real linux version is 2.4.24-pre1. My /usr/src/linux points to 2.6.0
> with reiser4 and Ingo Molnar's uml-combo-2.6.0-A5 patch applied ... in
> order for "make menconfig" to set CONFIG_PROC_MM=y
>
> Here's my patch against Ingo Molnar's uml-combo-2.6.0-A5 patch to make the
> patch works if you use reiser4 ...

Btw: avoid at all, if possible, patches in normal format; always use unified 
diff.
However, probably the patchset works with reiser4, for what I saw reviewing 
your diff. Was the error message something about do_mmap_pgoff, I guess?

> http://web.tiscali.it/no-redirect-tiscali/blaisorblade/linux/archives/UML/v
>2/
[...]
> Next, apply the following patches I created to make uml compiles ...
About these: most of them are needed because I did some silly errors, even 
because doing 4 kernel compiles(i386/uml, PROC_MM on and off)  to test it is 
a bit tiring... however now I did those test and finally it should be 
working.

In general, I'd suggest using 00-Combo-4.patch.bz2, which should remove the 
need for them, + remove the A-04... patch when you compile for i386.

Who has the modify_ldt problem (as Jeff Chua) should use also this piece(copy 
it from the previous email). However, I hope I can put a workaround for this 
problem in the next version of the patchset:

> --- uml/arch/um/sys-i386/bugs.c.org	Sat Dec 27 23:28:01 2003
> +++ uml/arch/um/sys-i386/bugs.c	Sat Dec 27 23:29:19 2003
> @@ -16,6 +16,9 @@
>
>  #define MAXTOKEN 64
>
> +extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
> +
> +
>  /* Set during early boot */
>  int host_has_cmov = 1;
>  int host_has_xmm = 0;
> @@ -107,7 +110,7 @@
>
>  static void disable_lcall(void)
>  {
> -	struct modify_ldt_ldt_s ldt;
> +	struct user_desc ldt;
>  	int err;
>
>  	bzero(&ldt, sizeof(ldt));

About this piece:
> --- uml/mm/mmap.c.org	Sun Dec 28 00:17:14 2003
> +++ uml/mm/mmap.c	Sun Dec 28 00:17:43 2003
> @@ -714,7 +714,7 @@
>  	return error;
>  }
>
> -EXPORT_SYMBOL(__do_mmap_pgoff);
> +EXPORT_SYMBOL(do_mmap_pgoff);
No, sorry, but the symbol to export is __do_mmap_pgoff, since I changed the 
function name.
-- 
cat <<EOSIGN
Paolo Giarrusso, aka Blaisorblade
Linux Kernel 2.4.21/2.6.0-test on an i686; Linux registered user n. 292729
EOSIGN




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