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authorJan Beulich <JBeulich@novell.com>2011-01-10 17:20:23 +0100
committerIngo Molnar <mingo@elte.hu>2011-01-11 12:43:41 +0100
commit24d9b70b8c679264756a6980e668b96b3f964826 (patch)
tree03fc36c220ffa87c5779cbf28281dec2f46096cd /arch/x86/kernel/amd_nb.c
parentx86: tsc: Prevent delayed init if initial tsc calibration failed (diff)
downloadlinux-24d9b70b8c679264756a6980e668b96b3f964826.tar.xz
linux-24d9b70b8c679264756a6980e668b96b3f964826.zip
x86: Use PCI method for enabling AMD extended config space before MSR method
While both methods should work equivalently well for the native case, the Xen Dom0 case can't reliably work with the MSR one, since there's no guarantee that the virtual CPUs it has available fully cover all necessary physical ones. As per the suggestion of Robert Richter the patch only adds the PCI method, but leaves the MSR one as a fallback to cover new systems the PCI IDs of which may not have got added to the code base yet. The only change in v2 is the breaking out of the new CPI initialization method into a separate function, as requested by Ingo. Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Robert Richter <robert.richter@amd.com> Cc: Andreas Herrmann3 <Andreas.Herrmann3@amd.com> Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> LKML-Reference: <4D2B3FD7020000780002B67D@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/amd_nb.c')
-rw-r--r--arch/x86/kernel/amd_nb.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index affacb5e0065..0a99f7198bc3 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -20,6 +20,13 @@ struct pci_device_id amd_nb_misc_ids[] = {
};
EXPORT_SYMBOL(amd_nb_misc_ids);
+const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[] __initconst = {
+ { 0x00, 0x18, 0x20 },
+ { 0xff, 0x00, 0x20 },
+ { 0xfe, 0x00, 0x20 },
+ { }
+};
+
struct amd_northbridge_info amd_northbridges;
EXPORT_SYMBOL(amd_northbridges);