mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 09:46:53 +07:00
d016bf7ece
LKP has triggered a compiler warning after my recent patch "mm: account
pmd page tables to the process":
mm/mmap.c: In function 'exit_mmap':
>> mm/mmap.c:2857:2: warning: right shift count >= width of type [enabled by default]
The code:
> 2857 WARN_ON(mm_nr_pmds(mm) >
2858 round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);
In this, on tile, we have FIRST_USER_ADDRESS defined as 0. round_up() has
the same type -- int. PUD_SHIFT.
I think the best way to fix it is to define FIRST_USER_ADDRESS as unsigned
long. On every arch for consistency.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
|
|
* Copyright 2003 PathScale, Inc.
|
|
* Derived from include/asm-i386/pgtable.h
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __UM_PGTABLE_2LEVEL_H
|
|
#define __UM_PGTABLE_2LEVEL_H
|
|
|
|
#include <asm-generic/pgtable-nopmd.h>
|
|
|
|
/* PGDIR_SHIFT determines what a third-level page table entry can map */
|
|
|
|
#define PGDIR_SHIFT 22
|
|
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
|
|
#define PGDIR_MASK (~(PGDIR_SIZE-1))
|
|
|
|
/*
|
|
* entries per page directory level: the i386 is two-level, so
|
|
* we don't really have any PMD directory physically.
|
|
*/
|
|
#define PTRS_PER_PTE 1024
|
|
#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
|
|
#define PTRS_PER_PGD 1024
|
|
#define FIRST_USER_ADDRESS 0UL
|
|
|
|
#define pte_ERROR(e) \
|
|
printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), \
|
|
pte_val(e))
|
|
#define pgd_ERROR(e) \
|
|
printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), \
|
|
pgd_val(e))
|
|
|
|
static inline int pgd_newpage(pgd_t pgd) { return 0; }
|
|
static inline void pgd_mkuptodate(pgd_t pgd) { }
|
|
|
|
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
|
|
|
|
#define pte_pfn(x) phys_to_pfn(pte_val(x))
|
|
#define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot))
|
|
#define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot))
|
|
|
|
#endif
|