• Jan Beulich's avatar
    x86: Use PCI method for enabling AMD extended config space before MSR method · 24d9b70b
    Jan Beulich authored
    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: default avatarJan Beulich <jbeulich@novell.com>
    Acked-by: default avatarRobert 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: default avatarIngo Molnar <mingo@elte.hu>
    24d9b70b
aperture_64.c 14 KB