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powerpc: Define swapper_pg_dir[] in C

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Don't duplicate swapper_pg_dir[] in each platform's head.S

Define it in mm/pgtable.c

Define MAX_PTRS_PER_PGD because on book3s/64 PTRS_PER_PGD is
not a constant.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/5e3f1b8a4695c33ccc80aa3870e016bef32b85e1.1623063174.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-06-07 10:56:05 +00:00 • committed by Michael Ellerman
parent 45b30fafe5
commit e72421a085
10 changed files with 10 additions and 81 deletions
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4
arch/powerpc/include/asm/pgtable.h
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@ -41,6 +41,10 @@ struct mm_struct;
#ifndef __ASSEMBLY__
#ifndef MAX_PTRS_PER_PGD
#define MAX_PTRS_PER_PGD PTRS_PER_PGD
#endif
/* Keep these as a macros to avoid include dependency mess */
#define pte_page(x) pfn_to_page(pte_pfn(x))
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))