diff options
| author | Yinghai Lu <[email protected]> | 2009-02-22 22:14:56 -0800 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2009-02-23 07:41:31 +0100 |
| commit | ecda06289f8202d4c6beb235f59ea464f4a91209 (patch) | |
| tree | 351d1919e4ea31dc727b6793bab2527461d06ef5 /lib/string_helpers.c | |
| parent | 8e6dafd6c741cd4679b4de3c5d9698851e4fa59c (diff) | |
x86: check mptable physptr with max_low_pfn on 32bit
Impact: fix early crash on LinuxBIOS systems
Kevin O'Connor reported that Coreboot aka LinuxBIOS tries to put
mptable somewhere very high, well above max_low_pfn (below which
BIOSes generally put the mptable), causing a panic.
The BIOS will probably be changed to be compatible with older
Linus versions, but nevertheless the MP-spec does not forbid
an MP-table in arbitrary system RAM, so make sure it all
works even if the table is in an unexpected place.
Check physptr with max_low_pfn * PAGE_SIZE.
Reported-by: Kevin O'Connor <[email protected]>
Signed-off-by: Yinghai Lu <[email protected]>
Cc: Stefan Reinauer <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions