Re: start_kernel(): bug: interrupts were enabled early

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From: Benjamin Herrenschmidt
Date: Thursday, April 1, 2010 - 4:00 pm

On Thu, 2010-04-01 at 12:06 +0100, David Howells wrote:

Yuck. I hate having to expose more APIs. Also the problem with that is
means callers have to know. So we need to propagate up all call chains
etc... (ie, radix_tree_init_early(), etc...)

This is pretty much exactly the discussion we had when moving sl*b
early, and back then, the final word from Linus (heh, for once he agreed
with me :-) was that this made no sense.

We can bury logic inside kmem_cache_create() though, it's not -that- a
hot path.

Cheers,
Ben.

--
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Messages in current thread:
start_kernel(): bug: interrupts were enabled early, Rabin Vincent, (Thu Mar 25, 12:41 pm)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Wed Mar 31, 1:40 pm)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Wed Mar 31, 1:52 pm)
Re: start_kernel(): bug: interrupts were enabled early, Matthew Wilcox, (Wed Mar 31, 2:01 pm)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Wed Mar 31, 2:05 pm)
Re: start_kernel(): bug: interrupts were enabled early, Russell King, (Wed Mar 31, 2:05 pm)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Wed Mar 31, 2:08 pm)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Wed Mar 31, 2:12 pm)
Re: start_kernel(): bug: interrupts were enabled early, Matthew Wilcox, (Wed Mar 31, 2:17 pm)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Wed Mar 31, 2:28 pm)
Re: start_kernel(): bug: interrupts were enabled early, Christoph Lameter, (Wed Mar 31, 2:42 pm)
Re: start_kernel(): bug: interrupts were enabled early, Russell King, (Wed Mar 31, 2:54 pm)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Wed Mar 31, 2:57 pm)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Wed Mar 31, 3:26 pm)
Re: start_kernel(): bug: interrupts were enabled early, Russell King, (Wed Mar 31, 3:30 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 3:31 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 3:35 pm)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Wed Mar 31, 3:36 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 3:36 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 3:37 pm)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Wed Mar 31, 3:49 pm)
Re: start_kernel(): bug: interrupts were enabled early, David Howells, (Wed Mar 31, 3:58 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 6:17 pm)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Wed Mar 31, 8:33 pm)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Wed Mar 31, 11:26 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 11:48 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Wed Mar 31, 11:50 pm)
Re: start_kernel(): bug: interrupts were enabled early, Jamie Lokier, (Thu Apr 1, 2:41 am)
Re: start_kernel(): bug: interrupts were enabled early, David Howells, (Thu Apr 1, 3:50 am)
Re: start_kernel(): bug: interrupts were enabled early, David Howells, (Thu Apr 1, 4:06 am)
Re: start_kernel(): bug: interrupts were enabled early, Matthew Wilcox, (Thu Apr 1, 4:23 am)
Re: start_kernel(): bug: interrupts were enabled early, Andrew Morton, (Thu Apr 1, 7:27 am)
Re: start_kernel(): bug: interrupts were enabled early, Christoph Lameter, (Thu Apr 1, 8:55 am)
Re: start_kernel(): bug: interrupts were enabled early, Christoph Lameter, (Thu Apr 1, 8:57 am)
Re: start_kernel(): bug: interrupts were enabled early, Linus Torvalds, (Thu Apr 1, 9:13 am)
Re: start_kernel(): bug: interrupts were enabled early, H. Peter Anvin, (Thu Apr 1, 9:15 am)
Re: start_kernel(): bug: interrupts were enabled early, Linus Torvalds, (Thu Apr 1, 1:12 pm)
Re: start_kernel(): bug: interrupts were enabled early, Benjamin Herrenschmidt, (Thu Apr 1, 4:00 pm)
Re: start_kernel(): bug: interrupts were enabled early, David Howells, (Fri Apr 2, 7:46 am)
Re: start_kernel(): bug: interrupts were enabled early, Linus Torvalds, (Fri Apr 2, 7:54 am)
Re: start_kernel(): bug: interrupts were enabled early, Kevin Hilman, (Wed Apr 7, 12:09 pm)
Re: start_kernel(): bug: interrupts were enabled early, =?utf-8?Q?Am=C3=A9ri ..., (Thu Apr 8, 8:55 am)