From: Catalin Marinas <catalin.marinas@arm.com>
To: "Nikunj Kela (nkela)" <nkela@cisco.com>
Cc: "xe-kernel@external.cisco.com" <xe-kernel@external.cisco.com>,
Will Deacon <will.deacon@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 2/2] arm64: add support for 43bit physical address
Date: Thu, 5 Jul 2018 19:34:53 +0100 [thread overview]
Message-ID: <20180705183452.vaaxjsrus6lnqyzt@armageddon.cambridge.arm.com> (raw)
In-Reply-To: <1530642932209.57184@cisco.com>
On Tue, Jul 03, 2018 at 06:35:32PM +0000, Nikunj Kela (nkela) wrote:
> We are trying to reduce the memory allocation needed for kdump kernel.
> We want to reserve less than 32M for kdump kernel if possible. We are
> able to get ~14M saving by the proposed change.
Have you tried disabling SPARSEMEM and using FLATMEM for this case? With
32M you wouldn't need more than a section anyway. It needs some tweaking
of the arm64 Kconfig and probably fail to build.
--
Catalin
next prev parent reply other threads:[~2018-07-05 18:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-02 21:04 Nikunj Kela
2018-07-03 14:56 ` Catalin Marinas
2018-07-03 18:35 ` Nikunj Kela (nkela)
2018-07-05 18:34 ` Catalin Marinas [this message]
2018-07-05 23:40 ` Nikunj Kela (nkela)
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