From f361a450bf1ad14e2b003217dbf3958638631265 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 10 Jul 2008 20:38:26 -0700 Subject: x86: introduce max_low_pfn_mapped for 64-bit when more than 4g memory is installed, don't map the big hole below 4g. Signed-off-by: Yinghai Lu Cc: Suresh Siddha Signed-off-by: Ingo Molnar --- include/asm-x86/e820.h | 3 ++- include/asm-x86/page.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include/asm-x86') diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h index 78c03d7bf44..33e793e991d 100644 --- a/include/asm-x86/e820.h +++ b/include/asm-x86/e820.h @@ -99,7 +99,8 @@ extern void free_early(u64 start, u64 end); extern void early_res_to_bootmem(u64 start, u64 end); extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align); -extern unsigned long e820_end(void); +extern unsigned long e820_end_of_ram_pfn(void); +extern unsigned long e820_end_of_low_ram_pfn(void); extern int e820_find_active_region(const struct e820entry *ei, unsigned long start_pfn, unsigned long last_pfn, diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h index b52ed85f32f..28d7b4533b1 100644 --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -61,6 +61,7 @@ extern void map_devmem(unsigned long pfn, unsigned long size, extern void unmap_devmem(unsigned long pfn, unsigned long size, pgprot_t vma_prot); +extern unsigned long max_low_pfn_mapped; extern unsigned long max_pfn_mapped; struct page; -- cgit v1.2.3