x86: fix trim mtrr not to setup_memory two times
commit76c324182bbd29dfe4298ca65efb15be18055df1
authorYinghai Lu <yhlu.kernel.send@gmail.com>
Sun, 23 Mar 2008 07:16:49 +0000 (23 00:16 -0700)
committerIngo Molnar <mingo@elte.hu>
Wed, 26 Mar 2008 21:23:41 +0000 (26 22:23 +0100)
tree7dcdd3aded048ab8613f532140d1d5bad14e4621
parent923a0cf82f2b504e316642e2d152d38b6c0be4ba
x86: fix trim mtrr not to setup_memory two times

we could call find_max_pfn() directly instead of setup_memory() to get
max_pfn needed for mtrr trimming.

otherwise setup_memory() is called two times... that is duplicated...

[ mingo@elte.hu: both Thomas and me simulated a double call to
  setup_bootmem_allocator() and can confirm that it is a real bug
  which can hang in certain configs. It's not been reported yet but
  that is probably due to the relatively scarce nature of
  MTRR-trimming systems. ]

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/setup_32.c
arch/x86/mm/discontig_32.c