Messages in this thread | | | From | Bjorn Helgaas <> | Date | Mon, 17 Oct 2011 10:33:10 -0600 | Subject | Re: [PATCH] x86: mpparse: fix mp_bus_not_pci handling |
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On Sun, Sep 25, 2011 at 3:29 PM, Bjorn Helgaas <bhelgaas@google.com> wrote: > Dan bisected a Dell PowerEdge 4200 boot regression to commit f8924e770. > Prior to that commit, 32-bit kernels set mp_bus_not_pci for all buses > except PCI. Afterwards, we set mp_bus_not_pci only for ISA. But ISA is > not the only non-PCI bus, so it's better to always set mp_bus_not_pci > and clear it only for PCI. > > The workaround was to boot with "noapic". Dan verified that with this > patch, his system boots without "noapic". > > Reference: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=586494 > Reported-and-tested-by: Dan McGrath <troubledaemon@gmail.com> > Cc: Alexey Starikovskiy <astarikovskiy@suse.de> > Cc: stable@kernel.org # 2.6.26+ > Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> > --- > arch/x86/kernel/mpparse.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c > index 9103b89..0741b062 100644 > --- a/arch/x86/kernel/mpparse.c > +++ b/arch/x86/kernel/mpparse.c > @@ -95,8 +95,8 @@ static void __init MP_bus_info(struct mpc_bus *m) > } > #endif > > + set_bit(m->busid, mp_bus_not_pci); > if (strncmp(str, BUSTYPE_ISA, sizeof(BUSTYPE_ISA) - 1) == 0) { > - set_bit(m->busid, mp_bus_not_pci); > #if defined(CONFIG_EISA) || defined(CONFIG_MCA) > mp_bus_id_to_type[m->busid] = MP_BUS_ISA; > #endif > >
Ping? I don't see this in linux-next, so I don't know if it got dropped or if there's something wrong with it.
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