Aneesh Kumar K.V
bfad110188
[ Upstream commit9cf6fa2458] No functional change in this patch. [aneesh.kumar@linux.ibm.com: fix] Link: https://lkml.kernel.org/r/87wnqtnb60.fsf@linux.ibm.com [sfr@canb.auug.org.au: another fix] Link: https://lkml.kernel.org/r/20210619134410.89559-1-aneesh.kumar@linux.ibm.com Link: https://lkml.kernel.org/r/20210615110859.320299-1-aneesh.kumar@linux.ibm.com Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/ Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Stable-dep-of:0da90af431("powerpc/book3s64/mm: Fix DirectMap stats in /proc/meminfo") Signed-off-by: Sasha Levin <sashal@kernel.org>
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012 Regents of the University of California
|
|
*/
|
|
|
|
#ifndef _ASM_RISCV_PGTABLE_64_H
|
|
#define _ASM_RISCV_PGTABLE_64_H
|
|
|
|
#include <linux/const.h>
|
|
|
|
#define PGDIR_SHIFT 30
|
|
/* Size of region mapped by a page global directory */
|
|
#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
|
|
#define PGDIR_MASK (~(PGDIR_SIZE - 1))
|
|
|
|
#define PMD_SHIFT 21
|
|
/* Size of region mapped by a page middle directory */
|
|
#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
|
|
#define PMD_MASK (~(PMD_SIZE - 1))
|
|
|
|
/* Page Middle Directory entry */
|
|
typedef struct {
|
|
unsigned long pmd;
|
|
} pmd_t;
|
|
|
|
#define pmd_val(x) ((x).pmd)
|
|
#define __pmd(x) ((pmd_t) { (x) })
|
|
|
|
#define PTRS_PER_PMD (PAGE_SIZE / sizeof(pmd_t))
|
|
|
|
static inline int pud_present(pud_t pud)
|
|
{
|
|
return (pud_val(pud) & _PAGE_PRESENT);
|
|
}
|
|
|
|
static inline int pud_none(pud_t pud)
|
|
{
|
|
return (pud_val(pud) == 0);
|
|
}
|
|
|
|
static inline int pud_bad(pud_t pud)
|
|
{
|
|
return !pud_present(pud);
|
|
}
|
|
|
|
#define pud_leaf pud_leaf
|
|
static inline int pud_leaf(pud_t pud)
|
|
{
|
|
return pud_present(pud) &&
|
|
(pud_val(pud) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC));
|
|
}
|
|
|
|
static inline void set_pud(pud_t *pudp, pud_t pud)
|
|
{
|
|
*pudp = pud;
|
|
}
|
|
|
|
static inline void pud_clear(pud_t *pudp)
|
|
{
|
|
set_pud(pudp, __pud(0));
|
|
}
|
|
|
|
static inline pmd_t *pud_pgtable(pud_t pud)
|
|
{
|
|
return (pmd_t *)pfn_to_virt(pud_val(pud) >> _PAGE_PFN_SHIFT);
|
|
}
|
|
|
|
static inline struct page *pud_page(pud_t pud)
|
|
{
|
|
return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
|
|
}
|
|
|
|
static inline pmd_t pfn_pmd(unsigned long pfn, pgprot_t prot)
|
|
{
|
|
return __pmd((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot));
|
|
}
|
|
|
|
static inline unsigned long _pmd_pfn(pmd_t pmd)
|
|
{
|
|
return pmd_val(pmd) >> _PAGE_PFN_SHIFT;
|
|
}
|
|
|
|
#define pmd_ERROR(e) \
|
|
pr_err("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e))
|
|
|
|
#endif /* _ASM_RISCV_PGTABLE_64_H */
|