From 76ebd0548df6ee48586e9b80d8fc2f58aa5fb51c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 9 Feb 2008 23:24:09 +0100 Subject: 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 Signed-off-by: Ingo Molnar --- include/asm-x86/cacheflush.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/cacheflush.h b/include/asm-x86/cacheflush.h index 8dd8c5e3cc7..6a22212b4b2 100644 --- a/include/asm-x86/cacheflush.h +++ b/include/asm-x86/cacheflush.h @@ -44,6 +44,8 @@ int set_memory_np(unsigned long addr, int numpages); void clflush_cache_range(void *addr, unsigned int size); +void cpa_init(void); + #ifdef CONFIG_DEBUG_RODATA void mark_rodata_ro(void); #endif -- cgit v1.2.3