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(parent: 7fd0da4) | patch
x86: if acpi=off, force setting the mmconf for fam10h
authorYinghai Lu <Yinghai.Lu@Sun.COM>
Tue, 26 Feb 2008 02:41:35 +0000 (18:41 -0800)
committerIngo Molnar <mingo@elte.hu>
Sat, 26 Apr 2008 21:41:04 +0000 (23:41 +0200)
commitd4c4d09415c48ecb621804cd4ec4a7a4d9a3662f
tree9a897fe359e5f2128fc42d492fe97a99ceac025ctree | snapshot (tar.gz zip)
parent7fd0da4085d5b012a6bdcbbd63da7ead9fc69ad4commit | 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>
arch/x86/kernel/setup_64.c diff | blob | blame | history