xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] Standardize pxx_page macros

Browse Source 
One of the changes necessary for shared page tables is to standardize the
pxx_page macros.  pte_page and pmd_page have always returned the struct
page associated with their entry, while pte_page_kernel and pmd_page_kernel
have returned the kernel virtual address.  pud_page and pgd_page, on the
other hand, return the kernel virtual address.

Shared page tables needs pud_page and pgd_page to return the actual page
structures.  There are very few actual users of these functions, so it is
simple to standardize their usage.

Since this is basic cleanup, I am submitting these changes as a standalone
patch.  Per Hugh Dickins' comments about it, I am also changing the
pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning.

Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dave McCracken
2006-09-25 23:31:48 -07:00
committed by Linus Torvalds
parent d2e7b7d0aa
commit 46a82b2d55
39 changed files with 117 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/asm-powerpc/pgtable-4k.h
View File

@@ -88,10 +88,11 @@
#define pgd_bad(pgd) (pgd_val(pgd) == 0)
#define pgd_present(pgd) (pgd_val(pgd) != 0)
#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0)
#define pgd_page(pgd) (pgd_val(pgd) & ~PGD_MASKED_BITS)
#define pgd_page_vaddr(pgd) (pgd_val(pgd) & ~PGD_MASKED_BITS)
#define pgd_page(pgd) virt_to_page(pgd_page_vaddr(pgd))
#define pud_offset(pgdp, addr) \
(((pud_t *) pgd_page(*(pgdp))) + \
(((pud_t *) pgd_page_vaddr(*(pgdp))) + \
(((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
#define pud_ERROR(e) \