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SubjectRe: [PATCH v2] Do not reserve crashkernel high memory if crashkernel low memory reserving failed
On Tue, Jul 21, 2015 at 09:38:14AM +0200, Ingo Molnar wrote:
> Also, why was this syntax introduced in the first place? Why should the user
> care??
>
> We should only have a single crashkernel option, to enable it - and everything
> else should be figured out by the kernel, automatically.
>
> Any other sub-options just paper over some fragility elsewhere and make the
> feature harder to use, hence more fragile.

Hmm, maybe the reason is that old userspace (kdump/kexec tools) can't
deal with crashkernel loaded high, so that the default for
crashkernel=size allocations was kept to be under 896MB.

If that's not an issue we can change the default and get rid of the
,high and ,low syntax.


Joerg



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