Re: [Xen-devel] Re: [PATCH] Two patches fixing regression introduced by 'x86-64, mm: Put early page table high'

["H. Peter Anvin" <hpa@xxxxxxxxx>]

On 05/02/2011 11:08 AM, Konrad Rzeszutek Wilk wrote:
>>
>> My inclination would be to apply your workaround -- are there any
>> adverse effects to doing that?
> 
> There is a bootup slowdown (not noticeable). That is because we call the
> 'memblock_find_range' function on every PTE table creation (only during
> bootup of course). 
> 
> Testing wise, on the machines on which the regression occurred, with these two
> patches the regression disappears - so that is a good sign. I am testing
> it on some more today to assure myself I am not missing anything.
> 

OK, sounds like a plan then.  I like it because it doesn't affect the
native kernel.

        -hpa

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