[PATCH] x86_64: Make pfn_valid work early in boot

It needs num_physpages, so initialize it early. It's later overwritten
again.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index 01e2de4..ad3b7fc 100644 (file)
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -614,6 +614,7 @@ void __init setup_arch(char **cmdline_p)
         * we are rounding upwards:
         */
        end_pfn = e820_end_of_ram();
+       num_physpages = end_pfn;                /* for pfn_valid */
 
        check_efer();