tree 1feae906b3ea81e6e8840900c14d63c1350998b5
parent 2450cf51a1bdba7037e91b1bcc494b01c58aaf66
author Yinghai Lu <yinghai@kernel.org> 1236065773 -0800
committer Ingo Molnar <mingo@elte.hu> 1236066622 +0100

x86: fix init_memory_mapping() to handle small ranges

Impact: fix failed EFI bootup in certain circumstances

Ying Huang found init_memory_mapping() has problem with small ranges
less than 2M when he tried to direct map the EFI runtime code out of
max_low_pfn_mapped.

It turns out we never considered that case and didn't check the range...

Reported-by: Ying Huang <ying.huang@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Maly <bmaly@redhat.com>
LKML-Reference: <49ACDDED.1060508@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>