[PATCH] x86-64: Remove freeing of SMP trampoline pages
Nick points out it never worked because PageReserved was
set and it might cause problems later on. Also HOTPLUG_CPU
is much more common now so let's care not too much
about the !hotplug case.
Cc: nickpiggin@yahoo.com.au
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 277ce5e..5b7aadb 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -859,17 +859,6 @@
* Reset trampoline flag
*/
*((volatile int *) phys_to_virt(0x467)) = 0;
-
-#ifndef CONFIG_HOTPLUG_CPU
- /*
- * Free pages reserved for SMP bootup.
- * When you add hotplug CPU support later remove this
- * Note there is more work to be done for later CPU bootup.
- */
-
- free_page((unsigned long) __va(PAGE_SIZE));
- free_page((unsigned long) __va(SMP_TRAMPOLINE_BASE));
-#endif
}
/*