Re: [PATCH 3/3] x86/kdump/64: Change the upper limit of crashkernel reservation

From: Kirill A. Shutemov
Date: Thu Aug 30 2018 - 09:50:47 EST

On Wed, Aug 29, 2018 at 10:16:24PM +0800, Baoquan He wrote:
> Restrict kdump to only reserve crashkernel below 64TB. Since the kdump
> jumping may be from 5-level to 4-level, and the kdump kernel is put
> above 64TB in 5-level kernel, then the jumping will fail. And the
> crashkernel reservation is done during the 1st kernel bootup, there's
> no way to detect the paging mode of kdump kernel at that time.
> Hence change the upper limmit of crashkernel reservation to 64TB


Kirill A. Shutemov