tree 7c803d44985e61879018dd76db52f77922e1b772
parent 7f99d946e71e71d484b7543b49e990508e70d0c0
author H. Peter Anvin <hpa@linux.intel.com> 1292555469 -0800
committer H. Peter Anvin <hpa@linux.intel.com> 1292555469 -0800

x86-32: Make sure we can map all of lowmem if we need to

A relocatable kernel can be anywhere in lowmem -- and in the case of a
kdump kernel, is likely to be fairly high.  Since the early page
tables map everything from address zero up we need to make sure we
allocate enough brk that we can map all of lowmem if we need to.

Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Tested-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D0AD3ED.8070607@kernel.org>