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| author | Yinghai Lu <Yinghai.Lu@Sun.COM> | 2008-02-25 18:41:35 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-26 23:41:04 +0200 |
| commit | d4c4d09415c48ecb621804cd4ec4a7a4d9a3662f (patch) | |
| tree | 9a897fe359e5f2128fc42d492fe97a99ceac025c /arch/x86/kernel/mmconf-fam10h_64.c | |
| parent | 7fd0da4085d5b012a6bdcbbd63da7ead9fc69ad4 (diff) | |
x86: if acpi=off, force setting the mmconf for fam10h
some BIOS only let AMD fam 10h handle bus0, and nvidia mcp55/ck804
to handle other buses. at that case MCFG will cover all over them.
but with acpi=off, we can not use MCFG. this patch will double check
the busnbits, and if it is less handling 256 bues, and acpi=off
will forcely reset the mmconf in msr, so we still use mmconf in above case.
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/mmconf-fam10h_64.c')
0 files changed, 0 insertions, 0 deletions