Yinghai Lu
9f3a5f52aa
x86: Make e820_remove_range to handle all covered case ...
Rusty found on lguest with trim_bios_range, max_pfn is not right anymore, and
looks e820_remove_range does not work right.
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] LGUEST: 0000000000000000 - 0000000004000000 (usable)
[ 0.000000] Notice: NX (Execute Disable) protection missing in CPU or disabled in BIOS!
[ 0.000000] DMI not present or invalid.
[ 0.000000] last_pfn = 0x3fa0 max_arch_pfn = 0x100000
[ 0.000000] init_memory_mapping: 0000000000000000-0000000003fa0000
root cause is: the e820_remove_range doesn't handle the all covered
case. e820_remove_range(BIOS_START, BIOS_END - BIOS_START, ...)
produces a bogus range as a result.
Make it match e820_update_range() by handling that case too.
Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <4BB18E55.6090903@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-03-31 17:40:57 -07:00
Merge branches 'battery-2.6.34', 'bugzilla-10805', 'bugzilla-14668', 'bugzilla-531916-power-state', 'ht-warn-2.6.34', 'pnp', 'processor-rename', 'sony-2.6.34', 'suse-bugzilla-531547', 'tz-check', 'video' and 'misc-2.6.34' into release
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