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Date: Mon, 29 Jul 2019 13:00:01 +0200
From: Christophe Leroy <christophe.leroy@....fr>
To: Jason Yan <yanaijie@...wei.com>, mpe@...erman.id.au,
linuxppc-dev@...ts.ozlabs.org, diana.craciun@....com,
benh@...nel.crashing.org, paulus@...ba.org, npiggin@...il.com,
keescook@...omium.org, kernel-hardening@...ts.openwall.com
Cc: linux-kernel@...r.kernel.org, wangkefeng.wang@...wei.com,
yebin10@...wei.com, thunder.leizhen@...wei.com, jingxiangfeng@...wei.com,
fanchengyang@...wei.com
Subject: Re: [RFC PATCH 02/10] powerpc: move memstart_addr and kernstart_addr
to init-common.c
Le 17/07/2019 à 10:06, Jason Yan a écrit :
> These two variables are both defined in init_32.c and init_64.c. Move
> them to init-common.c.
>
> Signed-off-by: Jason Yan <yanaijie@...wei.com>
> Cc: Diana Craciun <diana.craciun@....com>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Christophe Leroy <christophe.leroy@....fr>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Nicholas Piggin <npiggin@...il.com>
> Cc: Kees Cook <keescook@...omium.org>
Reviewed-by: Christophe Leroy <christophe.leroy@....fr>
> ---
> arch/powerpc/mm/init-common.c | 5 +++++
> arch/powerpc/mm/init_32.c | 5 -----
> arch/powerpc/mm/init_64.c | 5 -----
> 3 files changed, 5 insertions(+), 10 deletions(-)
>
> diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c
> index a84da92920f7..9273c38009cb 100644
> --- a/arch/powerpc/mm/init-common.c
> +++ b/arch/powerpc/mm/init-common.c
> @@ -21,6 +21,11 @@
> #include <asm/pgtable.h>
> #include <asm/kup.h>
>
> +phys_addr_t memstart_addr = (phys_addr_t)~0ull;
> +EXPORT_SYMBOL(memstart_addr);
> +phys_addr_t kernstart_addr;
> +EXPORT_SYMBOL(kernstart_addr);
> +
> static bool disable_kuep = !IS_ENABLED(CONFIG_PPC_KUEP);
> static bool disable_kuap = !IS_ENABLED(CONFIG_PPC_KUAP);
>
> diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
> index b04896a88d79..872df48ae41b 100644
> --- a/arch/powerpc/mm/init_32.c
> +++ b/arch/powerpc/mm/init_32.c
> @@ -56,11 +56,6 @@
> phys_addr_t total_memory;
> phys_addr_t total_lowmem;
>
> -phys_addr_t memstart_addr = (phys_addr_t)~0ull;
> -EXPORT_SYMBOL(memstart_addr);
> -phys_addr_t kernstart_addr;
> -EXPORT_SYMBOL(kernstart_addr);
> -
> #ifdef CONFIG_RELOCATABLE
> /* Used in __va()/__pa() */
> long long virt_phys_offset;
> diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
> index a44f6281ca3a..c836f1269ee7 100644
> --- a/arch/powerpc/mm/init_64.c
> +++ b/arch/powerpc/mm/init_64.c
> @@ -63,11 +63,6 @@
>
> #include <mm/mmu_decl.h>
>
> -phys_addr_t memstart_addr = ~0;
> -EXPORT_SYMBOL_GPL(memstart_addr);
> -phys_addr_t kernstart_addr;
> -EXPORT_SYMBOL_GPL(kernstart_addr);
> -
> #ifdef CONFIG_SPARSEMEM_VMEMMAP
> /*
> * Given an address within the vmemmap, determine the pfn of the page that
>
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