358d1c39c8
As part of the conversions to replace pgtable constructor/destructors with ptdesc equivalents, convert various page table functions to use ptdescs. late_alloc() also uses the __get_free_pages() helper function. Convert this to use pagetable_alloc() and ptdesc_address() instead to help standardize page tables further. Link: https://lkml.kernel.org/r/20230807230513.102486-18-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonas Bonn <jonas@southpole.se> Cc: Matthew Wilcox <willy@infradead.org> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* arch/arm/include/asm/tlb.h
|
|
*
|
|
* Copyright (C) 2002 Russell King
|
|
*
|
|
* Experimentation shows that on a StrongARM, it appears to be faster
|
|
* to use the "invalidate whole tlb" rather than "invalidate single
|
|
* tlb" for this.
|
|
*
|
|
* This appears true for both the process fork+exit case, as well as
|
|
* the munmap-large-area case.
|
|
*/
|
|
#ifndef __ASMARM_TLB_H
|
|
#define __ASMARM_TLB_H
|
|
|
|
#include <asm/cacheflush.h>
|
|
|
|
#ifndef CONFIG_MMU
|
|
|
|
#include <linux/pagemap.h>
|
|
|
|
#define tlb_flush(tlb) ((void) tlb)
|
|
|
|
#include <asm-generic/tlb.h>
|
|
|
|
#else /* !CONFIG_MMU */
|
|
|
|
#include <linux/swap.h>
|
|
#include <asm/tlbflush.h>
|
|
|
|
static inline void __tlb_remove_table(void *_table)
|
|
{
|
|
free_page_and_swap_cache((struct page *)_table);
|
|
}
|
|
|
|
#include <asm-generic/tlb.h>
|
|
|
|
static inline void
|
|
__pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr)
|
|
{
|
|
struct ptdesc *ptdesc = page_ptdesc(pte);
|
|
|
|
pagetable_pte_dtor(ptdesc);
|
|
|
|
#ifndef CONFIG_ARM_LPAE
|
|
/*
|
|
* With the classic ARM MMU, a pte page has two corresponding pmd
|
|
* entries, each covering 1MB.
|
|
*/
|
|
addr = (addr & PMD_MASK) + SZ_1M;
|
|
__tlb_adjust_range(tlb, addr - PAGE_SIZE, 2 * PAGE_SIZE);
|
|
#endif
|
|
|
|
tlb_remove_ptdesc(tlb, ptdesc);
|
|
}
|
|
|
|
static inline void
|
|
__pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr)
|
|
{
|
|
#ifdef CONFIG_ARM_LPAE
|
|
struct ptdesc *ptdesc = virt_to_ptdesc(pmdp);
|
|
|
|
pagetable_pmd_dtor(ptdesc);
|
|
tlb_remove_ptdesc(tlb, ptdesc);
|
|
#endif
|
|
}
|
|
|
|
#endif /* CONFIG_MMU */
|
|
#endif
|