Re: [PATCH] x86, kdump: Set crashkernel_low automatically

[Vivek Goyal]

On Mon, Mar 11, 2013 at 12:34:00PM -0700, Yinghai Lu wrote:
> On Mon, Mar 11, 2013 at 12:10 PM, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote:
> > Not breaking existing cases makes sense to me.
> 
> that is -v2 version:
> try 896M, then try 4G, than MAXMEM.
> 
> > May be we should use
> > a new parameter crashkernel_high to force memory reservation above
> > 4G and crashkernel=X continues to reserve memory at lower addresses
> > and remains backward compatible.
> 
> No need to use crashkernel_high, we can just cashkernel=X@Y instead.

crashkernel=X@Y is little different. It assumes user knows the memory
map and location "Y" is fixed. There might not be any memory at "Y".

So it is not same.

Thanks
Vivek
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