Messages in this thread | | | Date | Fri, 26 Mar 2004 21:03:56 +0000 | From | Russell King <> | Subject | Re: [patch 1/22] Add __early_param for all arches |
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On Fri, Mar 26, 2004 at 11:29:35AM +0000, David Woodhouse wrote: > Drivers may require allocation (bootmem not slab). We want to run before > that's feasible -- before 'mem=', by definition :)
It definitely wants to be after mem= since mem= modifies the memory layout before bootmem is initialised (and its required to be parsed before bootmem is initialised, so bootmem knows where the memory is.)
So we require, in order:
- mem= to be parsed - bootmem to be initialised - drivers which want to allocate from bootmem to then be initialised - setup rest of the kernel - final command line parsing
which gives us three stages of command line parsing.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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