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SubjectRe: [PATCH] x86: use PCI method for enabling AMD extended config space before MSR method
On 06.01.11 18:20:04, Robert Richter wrote:
> On 06.01.11 11:57:35, Jan Beulich wrote:
> > 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.
> >
> > Signed-off-by: Jan Beulich <jbeulich@novell.com>
> > Cc: Robert Richter <robert.richter@amd.com>
> > Cc: Joerg Roedel <Joerg.Roedel@amd.com>
> > Cc: Andreas Herrmann <Andreas.Herrmann3@amd.com>
> > Cc: Jeremy Fitzhardinge <jeremy@goop.org>
> >
> > ---
> > arch/x86/include/asm/amd_nb.h | 7 ++++++
> > arch/x86/kernel/amd_nb.c | 7 ++++++
> > arch/x86/kernel/aperture_64.c | 44 +++++++++++++++---------------------------
> > arch/x86/pci/amd_bus.c | 30 ++++++++++++++++++++++++++++
> > 4 files changed, 60 insertions(+), 28 deletions(-)

Btw, the patch should be relative to tip/x86/amd-nb as there would be
conflicts otherwise due to other changes.

-Robert

--
Advanced Micro Devices, Inc.
Operating System Research Center



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