ia64/linux-2.6.18-xen.hg

view include/asm-i386/agp.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 02a46885bd90
children
line source
1 #ifndef AGP_H
2 #define AGP_H 1
4 #include <asm/pgtable.h>
5 #include <asm/cacheflush.h>
7 /*
8 * Functions to keep the agpgart mappings coherent with the MMU.
9 * The GART gives the CPU a physical alias of pages in memory. The alias region is
10 * mapped uncacheable. Make sure there are no conflicting mappings
11 * with different cachability attributes for the same page. This avoids
12 * data corruption on some CPUs.
13 */
15 /* Caller's responsibility to call global_flush_tlb() for
16 * performance reasons */
17 #define map_page_into_agp(page) change_page_attr(page, 1, PAGE_KERNEL_NOCACHE)
18 #define unmap_page_from_agp(page) change_page_attr(page, 1, PAGE_KERNEL)
19 #define flush_agp_mappings() global_flush_tlb()
21 /* Could use CLFLUSH here if the cpu supports it. But then it would
22 need to be called for each cacheline of the whole page so it may not be
23 worth it. Would need a page for it. */
24 #define flush_agp_cache() wbinvd()
26 /* Convert a physical address to an address suitable for the GART. */
27 #define phys_to_gart(x) (x)
28 #define gart_to_phys(x) (x)
30 /* GATT allocation. Returns/accepts GATT kernel virtual address. */
31 #define alloc_gatt_pages(order) \
32 ((char *)__get_free_pages(GFP_KERNEL, (order)))
33 #define free_gatt_pages(table, order) \
34 free_pages((unsigned long)(table), (order))
36 #endif