| commit | 76ebd0548df6ee48586e9b80d8fc2f58aa5fb51c | |
| author | Thomas Gleixner <tglx@linutronix.de> | |
| Sat, 9 Feb 2008 22:24:09 +0000 (9 23:24 +0100) | ||
| committer | Thomas Gleixner <tglx@linutronix.de> | |
| Sat, 9 Feb 2008 22:24:09 +0000 (9 23:24 +0100) | ||
| tree | 10af366ea643126913cd588aa46741961be1d7cb | treesnapshot (tar.gz zip) |
| parent | a03c2a48e02aacaaea211c94691b729be357e047 | commitdiff |
x86: introduce page pool in cpa
DEBUG_PAGEALLOC was not possible on 64-bit due to its early-bootup
hardcoded reliance on PSE pages, and the unrobustness of the runtime
splitup of large pages. The splitup ended in recursive calls to
alloc_pages() when a page for a pte split was requested.
Avoid the recursion with a preallocated page pool, which is used to
split up large mappings and gets refilled in the return path of
kernel_map_pages after the split has been done. The size of the page
pool is adjusted to the available memory.
This part just implements the page pool and the initialization w/o
using it yet.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
DEBUG_PAGEALLOC was not possible on 64-bit due to its early-bootup
hardcoded reliance on PSE pages, and the unrobustness of the runtime
splitup of large pages. The splitup ended in recursive calls to
alloc_pages() when a page for a pte split was requested.
Avoid the recursion with a preallocated page pool, which is used to
split up large mappings and gets refilled in the return path of
kernel_map_pages after the split has been done. The size of the page
pool is adjusted to the available memory.
This part just implements the page pool and the initialization w/o
using it yet.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| arch/x86/mm/init_32.c | diffblobblamehistory | |
| arch/x86/mm/init_64.c | diffblobblamehistory | |
| arch/x86/mm/pageattr.c | diffblobblamehistory | |
| include/asm-x86/cacheflush.h | diffblobblamehistory |