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[PATCH] paravirt: remove set pte atomic 

Now that ptep_establish has a definition in PAE i386 3-level paging code, the
only paging model which is insane enough to have multi-word hardware PTEs
which are not efficient to set atomically, we can remove the ghost of
set_pte_atomic from other architectures which falesly duplicated it, and
remove all knowledge of it from the generic pgtable code.

set_pte_atomic is now a private pte operator which is specific to i386

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Zachary Amsden 2006-09-30 23:29:37 -07:00 committed by Linus Torvalds
parent d6d861e3c9
commit a93cb055a2
4 changed files with 1 additions and 12 deletions
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2
include/asm-frv/pgtable.h
View File

@ -176,8 +176,6 @@ do { \
} while(0)
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
#define set_pte_atomic(pteptr, pteval) set_pte((pteptr), (pteval))
/*
* pgd_offset() returns a (pgd_t *)
* pgd_index() is used get the offset into the pgd page's array of pgd_t's;

8
include/asm-generic/pgtable.h
View File

@ -15,19 +15,11 @@
* Note: the old pte is known to not be writable, so we don't need to
* worry about dirty bits etc getting lost.
*/
#ifndef __HAVE_ARCH_SET_PTE_ATOMIC
#define ptep_establish(__vma, __address, __ptep, __entry) \
do { \
set_pte_at((__vma)->vm_mm, (__address), __ptep, __entry); \
flush_tlb_page(__vma, __address); \
} while (0)
#else /* __HAVE_ARCH_SET_PTE_ATOMIC */
#define ptep_establish(__vma, __address, __ptep, __entry) \
do { \
set_pte_atomic(__ptep, __entry); \
flush_tlb_page(__vma, __address); \
} while (0)
#endif /* __HAVE_ARCH_SET_PTE_ATOMIC */
#endif
#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS

1
include/asm-i386/pgtable-3level.h
View File

@ -73,7 +73,6 @@ static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte
ptep->pte_low = pte.pte_low;
}
#define __HAVE_ARCH_SET_PTE_ATOMIC
#define set_pte_atomic(pteptr,pteval) \
set_64bit((unsigned long long *)(pteptr),pte_val(pteval))
#define set_pmd(pmdptr,pmdval) \

2
include/asm-m32r/pgtable-2level.h
View File

@ -44,7 +44,7 @@ static inline int pgd_present(pgd_t pgd) { return 1; }
*/
#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
#define set_pte_atomic(pteptr, pteval) set_pte(pteptr, pteval)
/*
* (pmds are folded into pgds so this doesnt get actually called,
* but the define is needed for a generic inline function.)