From: Rob Herring <robh+dt@kernel.org>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Frank Rowand <frowand.list@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Marc Zyngier <marc.zyngier@arm.com>,
Russell King <rmk+kernel@armlinux.org.uk>,
aryabinin@virtuozzo.com, Andrey Konovalov <andreyknvl@google.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Robin Murphy <robin.murphy@arm.com>,
Laura Abbott <labbott@redhat.com>, Stefan Agner <stefan@agner.ch>,
Johannes Weiner <hannes@cmpxchg.org>,
ghackmann@android.com,
Kristina Martsenko <kristina.martsenko@arm.com>,
chandan.vn@samsung.com,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
devicetree@vger.kernel.org, rppt@linux.ibm.com,
Russell King <linux@armlinux.org.uk>,
Greentime Hu <green.hu@gmail.com>,
deanbo422@gmail.com, gxt@pku.edu.cn,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [PATCH 2/6] arch: Make phys_initrd_start and phys_initrd_size global variables
Date: Tue, 30 Oct 2018 10:10:59 -0500 [thread overview]
Message-ID: <CAL_JsqKrrmMOQrV62L0QXAPiLGceMbvA7HZ=1U3PW0_MpqtC=w@mail.gmail.com> (raw)
In-Reply-To: <20181029235206.30060-3-f.fainelli@gmail.com>
On Mon, Oct 29, 2018 at 6:52 PM Florian Fainelli <f.fainelli@gmail.com> wrote:
>
> Make phys_initrd_start and phys_initrd_size global variables that will
> later be referenced by generic code under drivers/of/fdt.c.
>
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
> arch/arm/mm/init.c | 4 ++--
> arch/unicore32/mm/init.c | 4 ++--
> include/linux/initrd.h | 3 +++
> 3 files changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 0cc8e04295a4..8f364aa24172 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -51,8 +51,8 @@ unsigned long __init __clear_cr(unsigned long mask)
> }
> #endif
>
> -static phys_addr_t phys_initrd_start __initdata = 0;
> -static unsigned long phys_initrd_size __initdata = 0;
> +phys_addr_t phys_initrd_start __initdata = 0;
> +unsigned long phys_initrd_size __initdata = 0;
I would declare these in common initrd code instead. Then you don't
need a kconfig symbol.
> static int __init early_initrd(char *p)
> {
> diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
> index 8f8699e62bd5..4dd26d6f02e5 100644
> --- a/arch/unicore32/mm/init.c
> +++ b/arch/unicore32/mm/init.c
> @@ -31,8 +31,8 @@
>
> #include "mm.h"
>
> -static unsigned long phys_initrd_start __initdata = 0x01000000;
> -static unsigned long phys_initrd_size __initdata = SZ_8M;
> +phys_addr_t phys_initrd_start __initdata = 0x01000000;
> +unsigned long phys_initrd_size __initdata = SZ_8M;
You'll have to set these at runtime though. However, I seem to
remember that an exact size was needed for decompressing an initrd
which would make these defaults pointless. Maybe that was only certain
compression formats.
Rob
next prev parent reply other threads:[~2018-10-30 15:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-29 23:52 [PATCH 0/6] arm64: Get rid of __early_init_dt_declare_initrd() Florian Fainelli
2018-10-29 23:52 ` [PATCH 1/6] nds32: Remove phys_initrd_start and phys_initrd_size Florian Fainelli
2018-10-29 23:52 ` [PATCH 2/6] arch: Make phys_initrd_start and phys_initrd_size global variables Florian Fainelli
2018-10-30 15:10 ` Rob Herring [this message]
2018-10-29 23:52 ` [PATCH 3/6] arch: Define ARCH_HAS_PHYS_INITRD for ARM and Unicore32 Florian Fainelli
2018-10-29 23:52 ` [PATCH 4/6] of/fdt: Populate phys_initrd_start/phys_initrd_size from FDT Florian Fainelli
2018-10-30 9:32 ` Russell King - ARM Linux
2018-10-30 15:16 ` Rob Herring
2018-10-29 23:52 ` [PATCH 5/6] arm64: Utilize ARCH_HAS_PHYS_INITRD Florian Fainelli
2018-10-29 23:52 ` [PATCH 6/6] of/fdt: Remove definition check for __early_init_dt_declare_initrd() Florian Fainelli
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