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Message-ID: <20200529080539.GC4351@willie-the-truck>
Date:   Fri, 29 May 2020 09:05:39 +0100
From:   Will Deacon <will@...nel.org>
To:     John Donnelly <John.P.donnelly@...cle.com>
Cc:     Baoquan He <bhe@...hat.com>, Chen Zhou <chenzhou10@...wei.com>,
        tglx@...utronix.de, mingo@...hat.com, catalin.marinas@....com,
        dyoung@...hat.com, robh+dt@...nel.org, arnd@...db.de,
        devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
        kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
        horms@...ge.net.au, guohanjun@...wei.com, pkushwaha@...vell.com,
        linux-arm-kernel@...ts.infradead.org, james.morse@....com
Subject: Re: [PATCH v8 0/5] support reserving crashkernel above 4G on arm64
 kdump

[+James Morse]

On Thu, May 28, 2020 at 05:20:34PM -0500, John Donnelly wrote:
> On 5/25/20 8:42 PM, Baoquan He wrote:
> > On 05/21/20 at 05:38pm, Chen Zhou wrote:
> > > This patch series enable reserving crashkernel above 4G in arm64.

[...]

> > > Chen Zhou (5):
> > >    x86: kdump: move reserve_crashkernel_low() into crash_core.c
> > >    arm64: kdump: reserve crashkenel above 4G for crash dump kernel
> > >    arm64: kdump: add memory for devices by DT property, low-memory-range
> > >    kdump: update Documentation about crashkernel on arm64
> > >    dt-bindings: chosen: Document linux,low-memory-range for arm64 kdump
> > > 
> > >   Documentation/admin-guide/kdump/kdump.rst     | 13 ++-
> > >   .../admin-guide/kernel-parameters.txt         | 12 ++-
> > >   Documentation/devicetree/bindings/chosen.txt  | 25 ++++++
> > >   arch/arm64/kernel/setup.c                     |  8 +-
> > >   arch/arm64/mm/init.c                          | 61 ++++++++++++-
> > >   arch/x86/kernel/setup.c                       | 66 ++------------
> > >   include/linux/crash_core.h                    |  3 +
> > >   include/linux/kexec.h                         |  2 -
> > >   kernel/crash_core.c                           | 85 +++++++++++++++++++
> > >   kernel/kexec_core.c                           | 17 ----
> > >   10 files changed, 208 insertions(+), 84 deletions(-)
> > > 
> This proposal to improve vmcore creation on ArmĀ  has been going on for
> almost a year now.
> 
> Who is theĀ  final maintainer that needs to approve and except these ?
> 
> What are the lingering issues that are remaining so we get these accepted
> into a upstream commit ?

The arm64 bits need an Ack from James Morse, but he's not on CC despite
offering feedback on earlier versions.

Will

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