Re: [PATCH] kexec: use Crash kernel for Crash kernel low

From: Vivek Goyal
Date: Tue Apr 02 2013 - 11:51:18 EST


On Tue, Apr 02, 2013 at 08:46:16AM -0700, Yinghai Lu wrote:
> On Tue, Apr 2, 2013 at 8:39 AM, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote:
> > On Tue, Apr 02, 2013 at 07:45:36AM -0700, Yinghai Lu wrote:
> >
> > [..]
> >> 2. keep thing unified when new kexec-tools is used: always high.
> >
> > I think this is wrong. What if system does not have more than 4G of
> > memory. crashkernel=x,high will fail. So just because we have new version
> > of kexec-tools, it does not mean that one can always use crashkernel=x,high.
>
> no, it will not fail.
>
> If the system have less 4G, and memblock will still find the ram for us.

Ok, then description in kernel-parameters.txt is wrong.

+ crashkernel_high=size[KMG]
+ [KNL, x86_64] range above 4G. kernel allocate
physical
+ memory region above 4G.


Can you please inline your patches. Otherwise how one is supposed to give
review comments?

Thanks
Vivek
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