From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: linuxppc-dev@lists.ozlabs.org, Pingfan Liu <kernelfans@gmail.com>
Cc: kexec@lists.infradead.org, Hari Bathini <hbathini@linux.ibm.com>
Subject: Re: [PATCHv4] powerpc/crashkernel: take "mem=" option into account
Date: Tue, 9 Jun 2020 15:28:56 +1000 (AEST) [thread overview]
Message-ID: <159168034259.1381411.9724380160125554368.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <1585749644-4148-1-git-send-email-kernelfans@gmail.com>
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
prev parent reply other threads:[~2020-06-09 6:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-19 14:18 [PATCHv3] powerpc/crashkernel: take "mem=" option into account Pingfan Liu
2020-03-26 7:48 ` Hari Bathini
2020-04-01 14:00 ` [PATCHv4] " Pingfan Liu
2020-04-01 18:36 ` Hari Bathini
2020-06-09 5:28 ` Michael Ellerman [this message]
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