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powerpc/mm: make ioremap_bot common to all

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Drop multiple definitions of ioremap_bot and make one common to
all subarches.

Only CONFIG_PPC_BOOK3E_64 had a global static init value for
ioremap_bot. Now ioremap_bot is set in early_init_mmu_global().

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/920eebfd9f36f14c79d1755847f5bf7c83703bdd.1566309262.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2019-08-20 14:07:16 +00:00 • committed by Michael Ellerman
parent edfe1a5679
commit 7cd9b317b6
9 changed files with 7 additions and 12 deletions
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2
arch/powerpc/include/asm/pgtable.h
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@ -68,6 +68,8 @@ extern pgd_t swapper_pg_dir[];
extern void paging_init(void);
extern unsigned long ioremap_bot;
/*
* kern_addr_valid is intended to indicate whether an address is a valid
* kernel address. Most 32-bit archs define it as always true (like this)