mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
544db7597a
ia64, mips, parisc, powerpc, sh, sparc, x86 architectures use the same version of huge_ptep_get, so move this generic implementation into asm-generic/hugetlb.h. [arnd@arndb.de: fix ARM 3level page tables] Link: http://lkml.kernel.org/r/20181005161722.904274-1-arnd@arndb.de Link: http://lkml.kernel.org/r/20180920060358.16606-12-alex@ghiti.fr Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Tested-by: Helge Deller <deller@gmx.de> [parisc] Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Acked-by: Paul Burton <paul.burton@mips.com> [MIPS] Acked-by: Ingo Molnar <mingo@kernel.org> [x86] Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David S. Miller <davem@davemloft.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: James Hogan <jhogan@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2008, 2009 Cavium Networks, Inc.
|
|
*/
|
|
|
|
#ifndef __ASM_HUGETLB_H
|
|
#define __ASM_HUGETLB_H
|
|
|
|
#include <asm/page.h>
|
|
|
|
static inline int is_hugepage_only_range(struct mm_struct *mm,
|
|
unsigned long addr,
|
|
unsigned long len)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
|
|
static inline int prepare_hugepage_range(struct file *file,
|
|
unsigned long addr,
|
|
unsigned long len)
|
|
{
|
|
unsigned long task_size = STACK_TOP;
|
|
struct hstate *h = hstate_file(file);
|
|
|
|
if (len & ~huge_page_mask(h))
|
|
return -EINVAL;
|
|
if (addr & ~huge_page_mask(h))
|
|
return -EINVAL;
|
|
if (len > task_size)
|
|
return -ENOMEM;
|
|
if (task_size - len < addr)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
|
|
static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
|
|
unsigned long addr, pte_t *ptep)
|
|
{
|
|
pte_t clear;
|
|
pte_t pte = *ptep;
|
|
|
|
pte_val(clear) = (unsigned long)invalid_pte_table;
|
|
set_pte_at(mm, addr, ptep, clear);
|
|
return pte;
|
|
}
|
|
|
|
#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
|
|
static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
|
|
unsigned long addr, pte_t *ptep)
|
|
{
|
|
flush_tlb_page(vma, addr & huge_page_mask(hstate_vma(vma)));
|
|
}
|
|
|
|
#define __HAVE_ARCH_HUGE_PTE_NONE
|
|
static inline int huge_pte_none(pte_t pte)
|
|
{
|
|
unsigned long val = pte_val(pte) & ~_PAGE_GLOBAL;
|
|
return !val || (val == (unsigned long)invalid_pte_table);
|
|
}
|
|
|
|
#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
|
|
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
|
|
unsigned long addr,
|
|
pte_t *ptep, pte_t pte,
|
|
int dirty)
|
|
{
|
|
int changed = !pte_same(*ptep, pte);
|
|
|
|
if (changed) {
|
|
set_pte_at(vma->vm_mm, addr, ptep, pte);
|
|
/*
|
|
* There could be some standard sized pages in there,
|
|
* get them all.
|
|
*/
|
|
flush_tlb_range(vma, addr, addr + HPAGE_SIZE);
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
static inline void arch_clear_hugepage_flags(struct page *page)
|
|
{
|
|
}
|
|
|
|
#include <asm-generic/hugetlb.h>
|
|
|
|
#endif /* __ASM_HUGETLB_H */
|