2005-04-17 02:20:36 +04:00
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#ifndef _4LEVEL_FIXUP_H
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#define _4LEVEL_FIXUP_H
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#define __ARCH_HAS_4LEVEL_HACK
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#define __PAGETABLE_PUD_FOLDED
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mm, asm-generic: define PUD_SHIFT in <asm-generic/4level-fixup.h>
If an architecure uses <asm-generic/4level-fixup.h>, build fails if we
try to use PUD_SHIFT in generic code:
In file included from arch/microblaze/include/asm/bug.h:1:0,
from include/linux/bug.h:4,
from include/linux/thread_info.h:11,
from include/asm-generic/preempt.h:4,
from arch/microblaze/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:18,
from include/linux/spinlock.h:50,
from include/linux/mmzone.h:7,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from mm/mmap.c:12:
mm/mmap.c: In function 'exit_mmap':
>> mm/mmap.c:2858:46: error: 'PUD_SHIFT' undeclared (first use in this function)
round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);
^
include/asm-generic/bug.h:86:25: note: in definition of macro 'WARN_ON'
int __ret_warn_on = !!(condition); \
^
mm/mmap.c:2858:46: note: each undeclared identifier is reported only once for each function it appears in
round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);
^
include/asm-generic/bug.h:86:25: note: in definition of macro 'WARN_ON'
int __ret_warn_on = !!(condition); \
^
As with <asm-generic/pgtable-nopud.h>, let's define PUD_SHIFT to
PGDIR_SHIFT.
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>
2015-02-12 02:26:44 +03:00
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#define PUD_SHIFT PGDIR_SHIFT
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2005-04-17 02:20:36 +04:00
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#define PUD_SIZE PGDIR_SIZE
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#define PUD_MASK PGDIR_MASK
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#define PTRS_PER_PUD 1
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#define pud_t pgd_t
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2005-10-30 04:16:22 +03:00
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#define pmd_alloc(mm, pud, address) \
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((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \
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NULL: pmd_offset(pud, address))
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2005-04-17 02:20:36 +04:00
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#define pud_alloc(mm, pgd, address) (pgd)
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#define pud_offset(pgd, start) (pgd)
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#define pud_none(pud) 0
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#define pud_bad(pud) 0
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#define pud_present(pud) 1
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#define pud_ERROR(pud) do { } while (0)
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#define pud_clear(pud) pgd_clear(pud)
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2006-09-26 10:31:48 +04:00
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#define pud_val(pud) pgd_val(pud)
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#define pud_populate(mm, pud, pmd) pgd_populate(mm, pud, pmd)
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#define pud_page(pud) pgd_page(pud)
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#define pud_page_vaddr(pud) pgd_page_vaddr(pud)
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2005-04-17 02:20:36 +04:00
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#undef pud_free_tlb
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mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.
Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.
The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV]
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-22 09:44:28 +04:00
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#define pud_free_tlb(tlb, x, addr) do { } while (0)
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2008-02-05 09:29:14 +03:00
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#define pud_free(mm, x) do { } while (0)
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mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.
Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.
The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV]
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-22 09:44:28 +04:00
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#define __pud_free_tlb(tlb, x, addr) do { } while (0)
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2005-04-17 02:20:36 +04:00
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#undef pud_addr_end
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#define pud_addr_end(addr, end) (end)
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#endif
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