linux-kernel - Re: [PATCH v2 3/3] arch/arm/configs: Enable VMSPLIT_2G in imx_v6_v7

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Message-ID: <CAKmqyKOoTG+BGhRFtppQxnaV61GFxXXhmZJcxqGQVbnuV1PfqA@mail.gmail.com>
Date:   Tue, 2 Feb 2021 18:37:29 -0800
From:   Alistair Francis <alistair23@...il.com>
To:     Shawn Guo <shawnguo@...nel.org>
Cc:     Alistair Francis <alistair@...stair23.me>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] arch/arm/configs: Enable VMSPLIT_2G in imx_v6_v7_defconfig

On Thu, Jan 28, 2021 at 11:13 PM Shawn Guo <shawnguo@...nel.org> wrote:
>
> On Sun, Jan 17, 2021 at 10:03:01AM -0800, Alistair Francis wrote:
> > The reMarkable2 requires VMSPLIT_2G, so lets set this in the
> > imx_v6_v7_defconfig.
>
> Hmm, why is VMSPLIT_2G required by reMarkable2?

I'm not too sure. It's difficult to debug problems as I only have a
UART but without this I don't see any kernel prints so it seems like
the kernel doesn't get very far. I haven't had any luck with earlycon
on the device so I don't know how I can get more information.

Alistair

>
> Shawn
>
> >
> > Signed-off-by: Alistair Francis <alistair@...stair23.me>
> > ---
> >  arch/arm/configs/imx_v6_v7_defconfig | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
> > index 55674cb1ffce..fa9229616106 100644
> > --- a/arch/arm/configs/imx_v6_v7_defconfig
> > +++ b/arch/arm/configs/imx_v6_v7_defconfig
> > @@ -29,6 +29,7 @@ CONFIG_SOC_IMX7D=y
> >  CONFIG_SOC_IMX7ULP=y
> >  CONFIG_SOC_VF610=y
> >  CONFIG_SMP=y
> > +CONFIG_VMSPLIT_2G=y
> >  CONFIG_ARM_PSCI=y
> >  CONFIG_HIGHMEM=y
> >  CONFIG_FORCE_MAX_ZONEORDER=14
> > --
> > 2.29.2
> >