linux-kernel - Re: [PATCH v3 1/8] arm64: mm: Move reserve_crashkernel() into mem

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Message-ID: <d2b9b819c3245d80964959ab9544ae83aee470de.camel@suse.de>
Date:   Thu, 15 Oct 2020 10:55:39 +0200
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Will Deacon <will@...nel.org>
Cc:     robh+dt@...nel.org, catalin.marinas@....com, hch@....de,
        ardb@...nel.org, linux-kernel@...r.kernel.org,
        robin.murphy@....com, linux-arm-kernel@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org, jeremy.linton@....com,
        iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 1/8] arm64: mm: Move reserve_crashkernel() into
 mem_init()

On Thu, 2020-10-15 at 09:40 +0100, Will Deacon wrote:
> On Wed, Oct 14, 2020 at 09:12:03PM +0200, Nicolas Saenz Julienne wrote:
> > crashkernel might reserve memory located in ZONE_DMA. We plan to delay
> > ZONE_DMA's initialization after unflattening the devicetree and ACPI's
> > boot table initialization, so move it later in the boot process.
> > Specifically into mem_init(), this is the last place crashkernel will be
> > able to reserve the memory before the page allocator kicks in and there is
> > no need to do it earlier.
> > 
> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> > ---
> >  arch/arm64/mm/init.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Please can you cc me on the whole series next time? I know different
> maintainers have different preferences here, but I find it much easier to
> figure out what's happening when I can see all of the changes together.

Will do.

Regards,
Nicolas



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