[uml-devel] Re: uml 2.4 (32 bit) on skas 2.6 (64 bit) - add on

[kraehe <kraehe@copyleft.de>]

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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