[PATCHv4] powerpc/crashkernel: take "mem=" option into account

[Michael Ellerman]

On Wed, 1 Apr 2020 22:00:44 +0800, Pingfan Liu wrote:
> 'mem=" option is an easy way to put high pressure on memory during some
> test. Hence after applying the memory limit, instead of total mem, the
> actual usable memory should be considered when reserving mem for
> crashkernel. Otherwise the boot up may experience OOM issue.
> 
> E.g. it would reserve 4G prior to the change and 512M afterward, if passing
> crashkernel="2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G", and
> mem=5G on a 256G machine.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/crashkernel: Take "mem=" option into account
      https://git.kernel.org/powerpc/c/be5470e0c285a68dc3afdea965032f5ddc8269d7

cheers