[PATCH] Add +~800M crashkernel explaination
Robert LeBlanc
robert at leblancnet.us
Wed Jan 11 11:35:55 PST 2017
On Wed, Dec 14, 2016 at 4:17 PM, Xunlei Pang <xpang at redhat.com> wrote:
> As I replied in another post, if you really want to detail the behaviour, should mention
> "crashkernel=size[KMG][@offset[KMG]]" with @offset[KMG] specified explicitly, after
> all, it's handled differently with no upper bound limitation, but doing this may put
> the first kernel at the risk of lacking low memory(some devices require 32bit DMA),
> must use it with care because the kernel will assume users are aware of what they
> are doing and make a successful reservation as long as the given range is available.
crashkernel=1024M at 0x10000000
I can't get the offset to work. It seems that it allocates the space
and loads the crash kernel, but I couldn't get it to actually boot
into the crash kernel. Does it work for you? I'm using the 4.9 kernel.
Thanks
----------------
Robert LeBlanc
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