mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
1c2f7d14d8
Currently most platforms define pmd_pgtable() as pmd_page() duplicating the same code all over. Instead just define a default value i.e pmd_page() for pmd_pgtable() and let platforms override when required via <asm/pgtable.h>. All the existing platform that override pmd_pgtable() have been moved into their respective <asm/pgtable.h> header in order to precede before the new generic definition. This makes it much cleaner with reduced code. Link: https://lkml.kernel.org/r/1623646133-20306-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Brian Cain <bcain@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* sun3_pgalloc.h --
|
|
* reorganization around 2.3.39, routines moved from sun3_pgtable.h
|
|
*
|
|
*
|
|
* 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
|
|
*
|
|
* moved 1/26/2000 Sam Creasey
|
|
*/
|
|
|
|
#ifndef _SUN3_PGALLOC_H
|
|
#define _SUN3_PGALLOC_H
|
|
|
|
#include <asm/tlb.h>
|
|
|
|
#include <asm-generic/pgalloc.h>
|
|
|
|
extern const char bad_pmd_string[];
|
|
|
|
#define __pte_free_tlb(tlb,pte,addr) \
|
|
do { \
|
|
pgtable_pte_page_dtor(pte); \
|
|
tlb_remove_page((tlb), pte); \
|
|
} while (0)
|
|
|
|
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
|
|
{
|
|
pmd_val(*pmd) = __pa((unsigned long)pte);
|
|
}
|
|
|
|
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
|
|
{
|
|
pmd_val(*pmd) = __pa((unsigned long)page_address(page));
|
|
}
|
|
|
|
/*
|
|
* allocating and freeing a pmd is trivial: the 1-entry pmd is
|
|
* inside the pgd, so has no extra memory associated with it.
|
|
*/
|
|
#define pmd_free(mm, x) do { } while (0)
|
|
|
|
static inline pgd_t * pgd_alloc(struct mm_struct *mm)
|
|
{
|
|
pgd_t *new_pgd;
|
|
|
|
new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
|
|
memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
|
|
memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT));
|
|
return new_pgd;
|
|
}
|
|
|
|
#endif /* SUN3_PGALLOC_H */
|