lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86-32, memblock: Make add_highpages honor early reserved ranges

Browse Source 
Originally the only early reserved range that is overlapped with high
pages is "KVA RAM", but we already do remove that from the active ranges.

However, It turns out Xen could have that kind of overlapping to support memory
ballooning.x

So we need to make add_highpage_with_active_regions() to subtract
memblock reserved just like low ram; this is the proper design anyway.

In this patch, refactering get_freel_all_memory_range() to make it can
be used by add_highpage_with_active_regions().  Also we don't need to
remove "KVA RAM" from active ranges.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4CABB183.1040607@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Yinghai Lu
2010-10-05 16:15:15 -07:00
committed by H. Peter Anvin
parent 9f4c13964b
commit 1d931264af
4 changed files with 33 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/memblock.h
View File

@@ -9,6 +9,8 @@ void memblock_x86_to_bootmem(u64 start, u64 end);
void memblock_x86_reserve_range(u64 start, u64 end, char *name);
void memblock_x86_free_range(u64 start, u64 end);
struct range;
int __get_free_all_memory_range(struct range **range, int nodeid,
unsigned long start_pfn, unsigned long end_pfn);
int get_free_all_memory_range(struct range **rangep, int nodeid);
void memblock_x86_register_active_regions(int nid, unsigned long start_pfn,