[PATCH] x86: fix amd64-agp aperture validation

Under CONFIG_DISCONTIGMEM, assuming that a !pfn_valid() implies all
subsequent pfn-s are also invalid is wrong. Thus replace this by
explicitly checking against the E820 map.

AK: make e820 on x86-64 not initdata

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Mark Langsdorf <mark.langsdorf@amd.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-i386/e820.h b/include/asm-i386/e820.h
index c5b8fc6109d6..096a2a8eb1da 100644
--- a/include/asm-i386/e820.h
+++ b/include/asm-i386/e820.h
@@ -38,6 +38,7 @@ extern struct e820map e820;
 
 extern int e820_all_mapped(unsigned long start, unsigned long end,
                            unsigned type);
+extern int e820_any_mapped(u64 start, u64 end, unsigned type);
 extern void find_max_pfn(void);
 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
 extern void e820_register_memory(void);