linux/arch/i386/mm
Zachary Amsden d7271b14b2 [PATCH] i386: encapsulate copying of pgd entries
Add a clone operation for pgd updates.

This helps complete the encapsulation of updates to page tables (or pages
about to become page tables) into accessor functions rather than using
memcpy() to duplicate them.  This is both generally good for consistency
and also necessary for running in a hypervisor which requires explicit
updates to page table entries.

The new function is:

clone_pgd_range(pgd_t *dst, pgd_t *src, int count);

   dst - pointer to pgd range anwhere on a pgd page
   src - ""
   count - the number of pgds to copy.

   dst and src can be on the same page, but the range must not overlap
   and must not cross a page boundary.

Note that I ommitted using this call to copy pgd entries into the
software suspend page root, since this is not technically a live paging
structure, rather it is used on resume from suspend.  CC'ing Pavel in case
he has any feedback on this.

Thanks to Chris Wright for noticing that this could be more optimal in
PAE compiles by eliminating the memset.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:13 -07:00
..
boot_ioremap.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
discontig.c [PATCH] Move the fix to align node_end_pfns to a proper location 2005-08-07 10:00:39 -07:00
extable.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fault.c [PATCH] i386: inline asm cleanup 2005-09-05 00:06:11 -07:00
highmem.c [PATCH] kdump: Routines for copying dump pages 2005-06-25 16:24:53 -07:00
hugetlbpage.c [PATCH] remove hugetlb_clean_stale_pgtable() and fix huge_pte_alloc() 2005-09-05 00:05:46 -07:00
init.c [PATCH] i386: use set_pte macros in a couple places where they were missing 2005-09-05 00:06:12 -07:00
ioremap.c [PATCH] iounmap debugging 2005-07-07 18:23:35 -07:00
Makefile [PATCH] sparsemem memory model for i386 2005-06-23 09:45:05 -07:00
mmap.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pageattr.c [PATCH] i386: use set_pte macros in a couple places where they were missing 2005-09-05 00:06:12 -07:00
pgtable.c [PATCH] i386: encapsulate copying of pgd entries 2005-09-05 00:06:13 -07:00