Re: Patch to reorder functions in the vmlinux to a defined order

[Arjan van de Ven <arjan@linux.intel.com>]

Andi Kleen wrote:
> On Thursday 23 February 2006 17:43, Arjan van de Ven wrote:
>> On Thu, 2006-02-23 at 17:00 +0100, Andi Kleen wrote:
>>> On Thursday 23 February 2006 16:09, Arjan van de Ven wrote:
>>>
>>>> This patch puts the infrastructure in place to allow for a reordering of
>>>> functions based inside the vmlinux. The general idea is that it is possible
>>>> to put all "common" functions into the first 2Mb of the code, so that they
>>>> are covered by one TLB entry. This as opposed to the current situation where
>>>> a typical vmlinux covers about 3.5Mb (on x86-64) and thus 2 TLB entries.
>>>> (This patch depends on the previous patch to pin head.S as first in the order)
>>> I think you would first need to move the code first for that. Currently it starts
>>> at 1MB, which means 1MB is already wasted of the aligned 2MB TLB entry.
>>>
>>> I wouldn't have a problem with moving the 64bit kernel to 2MB though.
>> that was easy since it's a Config entry already ;)
> 
> 
> I assume you boot tested it?

yes it booted on my testbox, and system.map showed the 2 instead of the 1