linux-kernel - Re: [uml-devel] [Patch] uml: fix a link error

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Message-ID: <20090118083237.GA3292@hack.private>
Date:	Sun, 18 Jan 2009 16:32:37 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Rob Landley <rob@...dley.net>
Cc:	user-mode-linux-devel@...ts.sourceforge.net,
	Andrew Morton <akpm@...ux-foundation.org>,
	Américo Wang <xiyou.wangcong@...il.com>,
	jdike@...toit.com, linux-kernel@...r.kernel.org
Subject: Re: [uml-devel] [Patch] uml: fix a link error

On Sat, Jan 17, 2009 at 03:28:14AM -0600, Rob Landley wrote:
>On Friday 16 January 2009 14:41:58 Andrew Morton wrote:
>> > diff --git a/arch/um/sys-i386/sys_call_table.S
>> > b/arch/um/sys-i386/sys_call_table.S index 00e5f52..04147dc 100644
>> > --- a/arch/um/sys-i386/sys_call_table.S
>> > +++ b/arch/um/sys-i386/sys_call_table.S
>> > @@ -6,6 +6,7 @@
>> >
>> >  #define sys_vm86old sys_ni_syscall
>> >  #define sys_vm86 sys_ni_syscall
>> > +#define sys_sigprocmask sigprocmask
>> >
>> >  #define old_mmap old_mmap_i386
>>
>> For how long has this problem been present?
>>
>> Why aren't lots of other people reporting it?
>
>I'm not sure User Mode Linux still has a lot of users regularly testing the 
>latest and greatest version.  (QEMU and KVM kinda took the wind out of its 
>sails.)
>
>I still find it useful to be able to stick printfs into the code and debug 
>stuff even when the console isn't working, but I haven't been able to build a 
>version of 2.6.28 that works for me at all:
>
>cat > mini.conf << EOF
>CONFIG_BINFMT_ELF=y
>CONFIG_HOSTFS=y
>CONFIG_LBD=y
>CONFIG_BLK_DEV=y
>CONFIG_BLK_DEV_LOOP=y
>CONFIG_STDERR_CONSOLE=y
>CONFIG_UNIX98_PTYS=y
>CONFIG_EXT2_FS=y
>CONFIG_EXT3_FS=y
>CONFIG_STATIC_LINK=y
>CONFIG_NO_HZ=y
>CONFIG_UNEVICTABLE_LRU=y
>EOF
>make ARCH=um allnoconfig KCONFIG_ALLCONFIG=mini.conf
>make ARCH=um -j 3
>./linux rw init=/bin/bash rootfstype=hostfs
>
>The result panics (twice) and exits, instead of giving me a shell prompt.  
>Built and run on stock Ubuntu 8.10.  (I posted about it on tuesday, but nobody 
>replied...)

Hi, Rob.

I tried what you said, it works very fine here, on my Fedora 10.
Could you please tell us which kernel your host is using? and the
guest?

Thanks for your feedback.


-- 
"Against stupidity, the gods themselves, contend in vain."

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