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SubjectRe: x86/kdump: crashkernel=X try to reserve below 896M first then below 4G and MAXMEM
On Thu, Oct 19, 2017 at 10:52 PM, Dave Young <dyoung@redhat.com> wrote:
> Now crashkernel=X will fail if there's not enough memory at low region
> (below 896M) when trying to reserve large memory size. One can use
> crashkernel=xM,high to reserve it at high region (>4G) but it is more
> convinient to improve crashkernel=X to:
>
> - First try to reserve X below 896M (for being compatible with old
> kexec-tools).
> - If fails, try to reserve X below 4G (swiotlb need to stay below 4G).
> - If fails, try to reserve X from MAXMEM top down.
>
> It's more transparent and user-friendly.

ok with me.

But looks like last time Vivek did not like this idea.

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