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| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:41 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:41 +0200 |
| commit | 0637a70a5db98182d9ad3d6ae1ee30acf20afde9 (patch) | |
| tree | 36b625e24f3fe11a97cd9926ca2be6b2df1cbf89 /arch/x86_64/kernel/early-quirks.c | |
| parent | 8f60774a116ced9b73ae3913d511687889efe725 (diff) | |
| download | linux-0637a70a5db98182d9ad3d6ae1ee30acf20afde9.tar.gz | |
[PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1
Some buggy systems can machine check when config space accesses
happen for some non existent devices. i386/x86-64 do some early
device scans that might trigger this. Allow pci=noearly to disable
this. Also when type 1 is disabling also don't do any early
accesses which are always type1.
This moves the pci= configuration parsing to be a early parameter.
I don't think this can break anything because it only changes
a single global that is only used by PCI.
Cc: gregkh@suse.de
Cc: Trammell Hudson <hudson@osresearch.net>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64/kernel/early-quirks.c')
| -rw-r--r-- | arch/x86_64/kernel/early-quirks.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/early-quirks.c b/arch/x86_64/kernel/early-quirks.c index d637cff1c4b1a..208e38a372c10 100644 --- a/arch/x86_64/kernel/early-quirks.c +++ b/arch/x86_64/kernel/early-quirks.c @@ -82,6 +82,10 @@ static struct chipset early_qrk[] = { void __init early_quirks(void) { int num, slot, func; + + if (!early_pci_allowed()) + return; + /* Poor man's PCI discovery */ for (num = 0; num < 32; num++) { for (slot = 0; slot < 32; slot++) { |