* [uml-devel] uml 2.4 (32 bit) on skas 2.6 (64 bit)
@ 2005-04-23 18:03 kraehe
2005-04-23 18:40 ` [uml-devel] Re: uml 2.4 (32 bit) on skas 2.6 (64 bit) - add on kraehe
0 siblings, 1 reply; 3+ messages in thread
From: kraehe @ 2005-04-23 18:03 UTC (permalink / raw)
To: user-mode-linux-devel
Moin Guru's,
i purchased an AMD64 box recently - so i now have a 64bit system
running 2.6.11.7 in 64bit mode and 32bit emulation. I've tried the
skas-2.6.11-v9-pre1.patch on the 64bit host and I now have
durruti:/usr/src/linux-2.6.11.7-skas3-v9-amd64 $ l /proc/mm*
--w--w--w- 1 root root 0 2005-04-23 19:57 /proc/mm
--w--w--w- 1 root root 0 2005-04-23 19:57 /proc/mm64
but, when old UMLs are runing into problems after mounting root,
e.g. 2.4.22 (with some old patch) :
TCP: Hash tables configured (established 4096 bind 4096)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (ext2 filesystem) readonly.
Unable to load interpreter
Kernel panic: kernel BUG at memory.c:377!
or 2.4.30 (with uml-2.4.28-bs2-pre11.patch) :
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (ext2 filesystem) readonly.
[ ... system goes up to full load without any work ]
any idea where/how to proceed ? any new better/newer patches to
addess the idea of running a 32bit UML on a 64bit SKAS host ?
Bye Michael
--
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [uml-devel] Re: uml 2.4 (32 bit) on skas 2.6 (64 bit) - add on
2005-04-23 18:03 [uml-devel] uml 2.4 (32 bit) on skas 2.6 (64 bit) kraehe
@ 2005-04-23 18:40 ` kraehe
2005-04-24 14:09 ` Blaisorblade
0 siblings, 1 reply; 3+ messages in thread
From: kraehe @ 2005-04-23 18:40 UTC (permalink / raw)
To: user-mode-linux-devel
Moin Guru's,
I've just tried that, 2.4.30 with uml-2.4.28-bs2-pre11.patch works
on a 2.6.11.7-amd64 host without any SKAS patches. So TT mode is
fine. The 2.4.22 bug my UML runs when in SKAS reads as :
/*
* This is a long-lived spinlock. That's fine.
* There's no contention, because the page table
* lock only protects against kswapd anyway, and
* even if kswapd happened to be looking at this
* process we _want_ it to get stuck.
*/
if (address >= end)
BUG(); <-- Kernel panic: kernel BUG at memory.c:377!
spin_lock(&mm->page_table_lock);
flush_cache_range(mm, address, end);
tlb = tlb_gather_mmu(mm);
perhaps this old 2.4.22 code helps to point the problem with SKAS host
and newer 2.4.30 UML clients (/me hopes they are same problem ;-)
Bye Michael
--
mailto:kraehe@copyleft.de UNA:+.? 'CED+2+:::Linux:2.4.29'UNZ+1'
http://www.xml-edifact.org/ CETERUM CENSEO WINDOWS ESSE DELENDAM
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-04-23 18:03 [uml-devel] uml 2.4 (32 bit) on skas 2.6 (64 bit) kraehe
2005-04-23 18:40 ` [uml-devel] Re: uml 2.4 (32 bit) on skas 2.6 (64 bit) - add on kraehe
2005-04-24 14:09 ` Blaisorblade
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